Damasio;
Self Comes to Mind |
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Topic |
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Damasio;
Self Comes to Mind |
18 |
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Minds emerge when the activity of small circuits is organized across large networks so
as to compose momentary
patterns.
The patterns
represent things and events located outside the brain, even in the body or in the external world, but some patterns also represent the brain's own processing
of other patterns. The term map applies to all of those representational
patterns. |
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Damasio; Self Comes to Mind |
55 |
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Connecting Homeostasis, Value
and Consciousness |
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37 |
Damasio; Self Comes to Mind |
63 |
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Making Maps and Images |
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8 |
Damasio; Self Comes to Mind |
66 |
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The most detailed
maps in the brain are
in the cerebral cortex, although other
parts of the brain can make maps, albeit with a lower resolution. |
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3 |
Damasio; Self Comes to Mind |
66 |
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The fourth
cortical layer is probably responsible for a large part of the detailed maps. |
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0 |
Damasio; Self Comes to Mind |
70 |
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Maps and Minds |
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4 |
Damasio; Self Comes to Mind |
92 |
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By mapping the body in an integrated manner, the
brain manages to create a critical component of what will become the self. |
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22 |
Damasio; Self Comes to Mind |
92 |
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Body mapping
is a key to the elucidation of the problem of consciousness. |
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Damasio; Self Comes to Mind |
92 |
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The close
relationship of body and brain are essential to understanding our spontaneous
bodily feelings, emotions, and emotional feelings. |
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Damasio; Self Comes to Mind |
92 |
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Body Mapping |
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Damasio;
Self Comes to Mind |
92 |
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How does the brain
accomplish the mapping
of the body?
By treating the body proper and its parts as any other object, one might say, but that would hardly do justice to the
problem. |
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0 |
Damasio; Self Comes to Mind |
92 |
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As far as the brain is
concerned, the body proper is more than just any object -- it is central object of brain mapping. |
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Damasio; Self Comes to Mind |
92 |
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The term 'body proper' excludes the brain. |
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Damasio; Self Comes to Mind |
92 |
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The body uses both chemical signals
and neural signals to communicate with the brain. |
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0 |
Damasio;
Self Comes to Mind |
92 |
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Although part of the signaling from the body to brain results in a straightforward mapping, a
substantial part of the signaling is first treated in subcortical nuclei, within the spinal cord and especially in the brain stem. |
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Damasio; Self Comes to Mind |
93 |
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Signals
related to the body's interior comes to constitute feelings. |
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1 |
Damasio;
Self Comes to Mind |
93 |
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Aspects of the body's physical structure and function are engraved in brain circuitry, from early development, and generate persistent patterns
of activity. |
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Damasio; Self Comes to Mind |
93 |
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Stated emphatically, some version of the body is permanently re-created in brain activity. |
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Damasio;
Self Comes to Mind |
93 |
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The brain can do more than merely map states that are actually occurring, it can also transform body states and, most
dramatically, simulate
body states that have
not yet occurred. |
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Damasio; Self Comes to Mind |
97 |
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Interoception
-- complex mapping of
the interior sense of
the body. |
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4 |
Damasio; Self Comes to Mind |
97 |
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Exteroception
-- body-to-brain channels that map the state of skeletal muscles engaged in movement. |
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0 |
Damasio; Self Comes to Mind |
98 |
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Schematic of key brainstem nuclei involved in life regulation
(homeostasis)
(diagram) |
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1 |
Damasio; Self Comes to Mind |
108 |
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Emotions and Feelings |
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10 |
Damasio; Self Comes to Mind |
116 |
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Feelings of Emotion |
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8 |
Damasio; Self Comes to Mind |
118 |
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Activity in the insula is an important correlate
for every conceivable kind of feeling. |
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2 |
Damasio;
Self Comes to Mind |
118 |
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The insular
cortex is an important substrate
of feelings -- from those that are associated
with emotions to those
that correspond to any shade of pleasure or pain,
induced by a wide ranges stimuli -- hearing music one likes or hates; viewing
pictures one loves, including erotic material, or pictures that can cause disgust; drinking wine; having sex;
being high on drugs;
being low on drugs and
experiencing withdrawal;
etc. |
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Damasio;
Self Comes to Mind |
118 |
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The neural correlates of feelings are not confined to the insula. The anterior
cingulate cortex tends to become active in
parallel with the insula when we experience feelings. |
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Damasio; Self Comes to Mind |
118 |
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The insula and anterior
cingulate are closely interlocked regions, the two being joined by mutual connections. |
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0 |
Damasio;
Self Comes to Mind |
118 |
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The insula has dual sensory and motor
functions, albeit based toward the sensory side of the process, while
the anterior cingulate
operates as a motor structure. |
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0 |
Damasio; Self Comes to Mind |
118 |
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Several subcortical regions play a role in the construction of feeling
states. |
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Damasio; Self Comes to Mind |
120 |
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How do we feel an emotion? |
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2 |
Damasio; Self Comes to Mind |
122 |
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Varieties of Emotion |
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2 |
Damasio; Self Comes to Mind |
123 |
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Universal emotions (fear, anger, sadness, happiness, disgust, surprise) |
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1 |
Damasio; Self Comes to Mind |
123 |
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Emotions
are produced across cultures and are easily recognized because one part of the action, their facial expressions, is quite characteristic. |
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Damasio; Self Comes to Mind |
123 |
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Charles Darwin recognized the universality of
emotions, not only in humans but in animals. |
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Damasio; Self Comes to Mind |
123 |
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The universality of emotional expressions reveals the degree to which the emotional
action program is unlearned and automated. |
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Damasio; Self Comes to Mind |
123 |
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Emotion can
be modulated, with
small changes in intensity or duration of components movements. |
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Damasio;
Self Comes to Mind |
123 |
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The basic
program routines of emotions are stereotypical at all body levels at which they are executed -- external motions; visceral
changes in the heart, lungs, gut, and skin; and endocrine changes. |
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Damasio; Self Comes to Mind |
124 |
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Emotions
are unlearned, automated, and set by the genome. |
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1 |
Damasio;
Self Comes to Mind |
125 |
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Background emotions, such as enthusiasm and discouragement can be prompted by a variety of
circumstances in a person's life but also brought
on by internal states
such a disease and fatigue. |
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1 |
Damasio; Self Comes to Mind |
125 |
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Background emotions are close relatives of moods. |
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0 |
Damasio;
Self Comes to Mind |
125 |
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Social emotions are identified as having an unequivocal social setting. Examples include -- compassion, embarrassment, chain, guilt, content, jealousy,
envy, pride, admiration. |
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0 |
Damasio; Self Comes to Mind |
130 |
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Architecture for Memory |
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5 |
Damasio; Self Comes to Mind |
132 |
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The Nature of
Memory Records |
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2 |
Damasio;
Self Comes to Mind |
133 |
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What we normally refer to as the
memory of an object is the composite memory of the sensory and motor activities
related to the interaction between the organism and the object. |
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1 |
Damasio;
Self Comes to Mind |
133 |
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In studies using functional magnetic resonance imaging (fMRI) in humans, multivariate pattern
analyses demonstrate the presence of specific patterns of brain activity for certain objects
seen or heard by the subject. |
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Damasio;
Self Comes to Mind |
135 |
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We have inherited from many prior species, abundant networks of
dispositions that run
our basic mechanisms of life
management.
They include the nuclei that control our endocrine system and the nuclei that serve the mechanisms of reward and punishment in the triggering and execution of the emotions. |
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2 |
Damasio; Self Comes to Mind |
136 |
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In the process of recall -- the brain creates memory records from sensory maps and plays back an approximation of the original content. |
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1 |
Damasio; Self Comes to Mind |
136 |
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Where are
the images reconstructed
so that we can study them in our reverie? |
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0 |
Damasio;
Self Comes to Mind |
137 |
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Early sensory cortices (largely in the back sections of the brain) bring forward the components
of perceptual information by brain pathways to multimodal cortices (largely in the
frontal sections),
which integrate them. |
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1 |
Damasio;
Self Comes to Mind |
137 |
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Perception
would operate on the basis of a cascade of
processes going in one
direction.
The cascade
would extract, step-by-step, more and more refined signals, first in the sensory cortices of a single modality (e.g., visual) and
later in multimodal cortices, those that receive signals from more than one modality
(e.g., visual, auditory, and somatic). |
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0 |
Damasio; Self Comes to Mind |
137 |
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The perception
cascade would follow, in general, a caudo-rostral direction in the
culminating and anterior temporal and frontal
cortices, where the
most integrated representations of the ongoing multisensory
apprehension of reality are presumed to occur. |
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0 |
Damasio; Self Comes to Mind |
137 |
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The assumptions captured in the
notion of a "grandmother cell," a neuron
(or small ensemble of neurons) near the top of the processing
cascade (e.g. the anterior
temporal lobe) whose activity would
comprehensively represent our grandmother when we perceive her. |
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0 |
Damasio;
Self Comes to Mind |
138 |
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Reactivated grandmother cells would allow the playback of the same perceived contents in their entirety. The prediction of a grandmother cell is not borne out in the reality of neurophysiological
findings. |
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1 |
Damasio;
Self Comes to Mind |
138 |
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In regard to grandmother
cells, patients with damage
to the anterior brain regions -- frontal and temporal -- report normal perception and display only selected deficits in the recall and recognition of unique objects and events. |
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0 |
Damasio; Self Comes to Mind |
138 |
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Anterior damage permits the integrated view and the view of the parts. |
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0 |
Damasio; Self Comes to Mind |
138 |
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Only by damaging sectors of the cerebral cortex positioned farther back in the
brain, near the main
sensory and motor
regions, will there be compromise to the access
of separable memory components, those that correspond to varied
objects or to features
of objects, such as color or movement. |
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0 |
Damasio;
Self Comes to Mind |
138 |
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Damage to
the integrative, associative cortices does not preclude integrated
perception, or recall of the parts that constitute a set, or recall
of the meaning of non-unique
sets of objects and
features. |
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0 |
Damasio; Self Comes to Mind |
138 |
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Damage to
the integrative, associative cortices precludes the recall of uniqueness and specificity of objects and scenes. |
|
0 |
Damasio; Self Comes to Mind |
139 |
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The larger the sensorimotor context that is enacted relative to a particular entity or event, the greater the complexity. |
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1 |
Damasio; Self Comes to Mind |
139 |
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The memory of unique entities and events, those that are both unique and personal, requires high complexity contexts. |
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0 |
Damasio;
Self Comes to Mind |
139 |
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Hierarchical progression of complexity -- unique personal
entities and events require the highest complexity; unique
nonpersonal entities and events are next; non-unique
entities and events require least. |
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0 |
Damasio; Self Comes to Mind |
140 |
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The semantic/episodic
distinction, or the generic/contextual distinction. |
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1 |
Damasio; Self Comes to Mind |
140 |
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Damasio's model of neural architecture accounting for recall and recognition. |
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0 |
Damasio; Self Comes to Mind |
140 |
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Images can
be experienced during perception and during recall. |
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0 |
Damasio;
Self Comes to Mind |
140 |
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In brains such as ours, thanks to the reciprocal
connections between the map-making
brain space and the dispositional
space, maps can be recorded in dispositional
form. |
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0 |
Damasio; Self Comes to Mind |
140 |
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Dispositions
are a space-saving mechanism for information storage. |
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0 |
Damasio; Self Comes to Mind |
140 |
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Dispositions
can be used to reconstruct the maps in early sensory cortices, and the format in which they were first
experienced. |
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0 |
Damasio; Self Comes to Mind |
140 |
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Cell ensembles at the top levels of the processing hierarchies would not hold explicit
representation of the maps
for objects and events. Rather, the ensembles would hold know how, i.e. dispositions, for the eventual reconstruction of explicit representations when they become needed. |
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0 |
Damasio;
Self Comes to Mind |
141 |
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Dispositions
are commanding the
process of reactivating and putting together aspects of past perception, wherever they have been processed and then locally recorded. |
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1 |
Damasio; Self Comes to Mind |
141 |
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Dispositions
act on a host of early sensory cortices originally engaged by perception. |
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0 |
Damasio; Self Comes to Mind |
141 |
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Dispositions
act by way of connections diverging from the disposition site back to early sensory cortices. |
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0 |
Damasio; Self Comes to Mind |
141 |
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The locus where memory records would actually be played back would not be that different from the locus of original
perception. |
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0 |
Damasio; Self Comes to Mind |
141 |
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Convergence-Divergence Zones |
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0 |
Damasio;
Self Comes to Mind |
141 |
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Convergence divergence zones
(CDZs) record the coincidence
of activity in neurons hailing from different brain sites, neurons that
had been made active
by, for example, the mapping of a certain object. |
|
0 |
Damasio; Self Comes to Mind |
141 |
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No part of
the overall map of an object as to the permanently
re-represented in the CDZs, to be placed in memory. |
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0 |
Damasio; Self Comes to Mind |
141 |
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To reconstitute
the original map, only the coincidence of signals from neurons linked to the map need to
be recorded. |
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0 |
Damasio; Self Comes to Mind |
141 |
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To reconstitute the original map and thus produce recall, Damasio proposes the mechanism of
time-locked retroactivation. |
|
0 |
Damasio; Self Comes to Mind |
141 |
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The term retroactivation points to the fact that the mechanism requires a process of going back in order to induce activity. |
|
0 |
Damasio; Self Comes to Mind |
141 |
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The term time-locked calls attention to the necessity to reactivate the components of the
map approximately within the same time interval, so that what occurred simultaneously (or nearly so) in perception could be reinstated simultaneously (or
nearly so) in recall. |
|
0 |
Damasio; Self Comes to Mind |
142 |
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Separate processing in two kinds of brain systems -- one that manages maps/images in another that
manages dispositions. |
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1 |
Damasio; Self Comes to Mind |
142 |
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For the
image space, Damasio proposes several islands or early sensory cortices -- for
example, the ensemble of visual cortices that encircled the primary visual
cortex (area 17 or V1), the ensemble of auditory cortices, that
of somatosensory cortices, etc. |
|
0 |
Damasio; Self Comes to Mind |
142 |
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Schematic of Damasio's convergence-divergence architecture
(diagram) |
|
0 |
Damasio; Self Comes to Mind |
143 |
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Cortical dispositional space includes all the higher-order association cortices
in temporal, parietal,
and frontal regions. |
|
1 |
Damasio; Self Comes to Mind |
143 |
|
An old set
of dispositional
devices remains beneath
the cerebral cortex in the basal forebrain, basal ganglia, thalamus, hypothalamus, and brain stem. |
|
0 |
Damasio;
Self Comes to Mind |
143 |
|
The image
space is the space where explicit images of all sensory types occur, including
both the images that become conscious and those that remained unconscious. |
|
0 |
Damasio; Self Comes to Mind |
143 |
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The image
space is located in
the map-making brain,
a large territory form by the aggregate of all the early sensory cortices, the
regions of cerebral cortex located in and around the entry point of visual, auditory, and other sensory signals into the brain. |
|
0 |
Damasio;
Self Comes to Mind |
143 |
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Image space
also includes the territories of the nucleus
tractus solitarius, parabrachial nucleus, and superior colliculi, which have image making capability. |
|
0 |
Damasio; Self Comes to Mind |
143 |
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Dispositional space is that in which dispositions hold the knowledge base as well is the devices for the reconstruction of that knowledge in recall. |
|
0 |
Damasio; Self Comes to Mind |
143 |
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Dispositional space is the source of images in the process of imagination and reasoning and is also used to generate
movement. |
|
0 |
Damasio;
Self Comes to Mind |
143 |
|
Dispositional space is located in the cerebral cortices that are not otherwise occupied by
the image space (the higher-order cortices and part of the limbic cortices) and in numerous subcortical
nuclei. |
|
0 |
Damasio; Self Comes to Mind |
143 |
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When dispositional
circuits are activated, they signal to other circuits and cause images or actions to be generated. |
|
0 |
Damasio; Self Comes to Mind |
143 |
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The contents exhibited in the image space are explicit, while the contents of the
dispositional space
are implicit. |
|
0 |
Damasio; Self Comes to Mind |
143 |
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We can access the contents of images, if we are conscious, but we never access the contents of dispositions
directly. |
|
0 |
Damasio; Self Comes to Mind |
143 |
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Of necessity, the contents of dispositions are always unconscious. |
|
0 |
Damasio; Self Comes to Mind |
143 |
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Dispositions
produce a variety of results. They can generate actions of many kinds in
many levels of complexity -- the release of hormones into the bloodstream; the contraction of muscles in the viscera or of muscles in a limb or in the vocal apparatus. |
|
0 |
Damasio;
Self Comes to Mind |
144 |
|
Cortical dispositions also hold records of an image
that was actually perceived on some previous occasion, and they participate in the attempt to reconstruct a sketch of that image from memory. |
|
1 |
Damasio;
Self Comes to Mind |
144 |
|
Dispositions
also assist with the processing of a currently perceived image, for instance, by influencing the degree of attention accorded to the current image. |
|
0 |
Damasio;
Self Comes to Mind |
144 |
|
We are never
aware of the
knowledge necessary to perform any of the dispositional
tasks, nor are we ever aware of the intermediate steps that are
taken. We are aware only of the results, like a state of well-being, the racing of the heart, the movement of a hand, a fragment of a recalled sound, the edited version of an ongoing perception of landscape. |
|
0 |
Damasio;
Self Comes to Mind |
144 |
|
All of our memories, inherited from evolution and available at birth or acquired through learning thereafter -- exist in our brains in dispositional form, waiting to
become explicit images
or actions. |
|
0 |
Damasio; Self Comes to Mind |
144 |
|
Our knowledge
base is implicit,
encrypted, and unconscious. |
|
0 |
Damasio; Self Comes to Mind |
144 |
|
Dispositions
are not words; they are abstract records of potentialities. |
|
0 |
Damasio;
Self Comes to Mind |
144 |
|
The basis
for enactment of words or signs
exist as dispositions
before they come to life in the form of images and actions, as in the production of speech or sign language. |
|
0 |
Damasio; Self Comes to Mind |
144 |
|
The rules with which we put words and signs together, the grammar of a
language, are also held as dispositions. |
|
0 |
Damasio; Self Comes to Mind |
144 |
|
A convergence-divergence
zone (CDZ) is an ensemble of neurons within which
many feedforward-feedback loops make contact. |
|
0 |
Damasio;
Self Comes to Mind |
144 |
|
A CDZ receives feedforward connections from sensory areas located earlier in the signal-processing
chains, which begin at the entry point of the sensory signals in the cerebral
cortex. |
|
0 |
Damasio; Self Comes to Mind |
144 |
|
A CDZ sends reciprocal feedback projections to the originating
areas. |
|
0 |
Damasio; Self Comes to Mind |
144 |
|
A CDZ also sends feedforward
projections to regions located in the next connectional level of the
chain and receives return projections from them. |
|
0 |
Damasio; Self Comes to Mind |
145 |
|
CDZs are microscopic and are located within convergence-divergence regions (CDRegions), which are macroscopic. |
|
1 |
Damasio; Self Comes to Mind |
145 |
|
Damasio envisions the number of CDZs to be on the order of many
thousands. |
|
0 |
Damasio; Self Comes to Mind |
145 |
|
CDRegions
number in the dozens. |
|
0 |
Damasio; Self Comes to Mind |
145 |
|
CDZs are micronodes; CDRegions are macronodes. |
|
0 |
Damasio; Self Comes to Mind |
145 |
|
CDRegions
are located in strategic areas in association
cortices, area toward which several major pathways converge. |
|
0 |
Damasio; Self Comes to Mind |
145 |
|
Experimental neuroanatomical
studies have shown that convergence-divergence
patterns of connectivity exists in the primate brain. |
|
0 |
Damasio;
Self Comes to Mind |
145 |
|
CDRegions
play an important role in producing and organizing critical components of the
conscious mind,
including those that make up the autobiographical
self. |
|
0 |
Damasio; Self Comes to Mind |
145 |
|
Both CDRegions and CDZs come into existence under genetic
control.
As the organism interacts with the
environment during development,
synaptic strengthening
and weakening
modifies convergence regions significantly and massively
modifies CDZs. |
|
0 |
Damasio; Self Comes to Mind |
145 |
|
Synaptic strengthening occurs when external circumstances match the
survival needs of the organism. |
|
0 |
Damasio; Self Comes to Mind |
145 |
|
The function of CDZs consists of re-creating separate sets of neural activity that were once approximately simultaneous during perception -- i.e. that coincided during the time window necessary for us to attend to them
and be conscious of them. |
|
0 |
Damasio;
Self Comes to Mind |
145 |
|
The CDZ would prompt an extremely fast sequence of
activations that would make separate neural regions come online in some
order, the sequence being imperceptible to consciousness. |
|
0 |
Damasio;
Self Comes to Mind |
148 |
|
Knowledge retrieval would be based on relatively simultaneous,
attended activity in many
early cortical regions, engendered over several iterations of such reactivation cycles. |
|
3 |
Damasio; Self Comes to Mind |
148 |
|
The level at which knowledge is retrieved would depend on the scope of multiregional activation. |
|
0 |
Damasio;
Self Comes to Mind |
148 |
|
Reading lips
in the absence of a sound induces activity in the auditory
cortices, and the evoked
activity patterns overlap with those elicited
during the perception of spoken words. |
|
0 |
Damasio; Self Comes to Mind |
149 |
|
Mental imagery
-- the process of imagination consists of the recall of images and their subsequent manipulation. |
|
1 |
Damasio;
Self Comes to Mind |
149 |
|
Images
constructed during perception are reconstructed during the process of imagery. They are approximations rather than replicas, attempts at getting back at past reality and thus not quite as vivid or accurate. |
|
0 |
Damasio;
Self Comes to Mind |
149 |
|
Research studies indicate
unequivocally that imagery
tasks in modalities
such as visual and auditory usually evoke brain activity patterns that overlap to a considerable extent with the patterns
observed during actual perception. |
|
0 |
Damasio;
Self Comes to Mind |
149 |
|
Focal brain damage often causes simultaneous deficits in perception and imagery. An example is the inability to both perceive and imagine colors caused by damage
to the occipitotemporal region. Patients with focal damage to this regions see their visual
world in black and white,
literally in shades of gray. |
|
0 |
Damasio;
Self Comes to Mind |
150 |
|
Evidence from both functional
imaging and lesion studies suggests that the recall of objects and events relies, at least in part, on the activity
near the points where sensory signals enter the cortex, as well is near motor output sites. These are the sites
engaged in the original perception of objects and events. |
|
1 |
Damasio;
Self Comes to Mind |
150 |
|
Mirror neuron
research provides evidence that a convergence-divergence
architecture is satisfactory means to explain
certain complex behaviors and mental operations. |
|
0 |
Damasio; Self Comes to Mind |
150 |
|
The key finding in mirror neuron research is that the mere observation of an action leads to activity in motor related areas. |
|
0 |
Damasio; Self Comes to Mind |
151 |
|
The perception or recall of most objects and events depends on activity in varied image-making
regions of the brain and often involves parts of
the brain related to movement. This highly dispersed pattern of activity
occurs within the image
space. |
|
1 |
Damasio;
Self Comes to Mind |
151 |
|
Dispositional space is made up of CDZs and CDRs
in association cortices,
which are not image making cortices. The dispositional space guides the image making but is not involved in displaying images itself. |
|
0 |
Damasio; Self Comes to Mind |
151 |
|
Dispositional space can be considered to contain "grandmother cells," defined liberally as neurons whose activity correlates with the presence of the specific
object but not as neurons whose activity permits, in and of themselves, explicit mental images of objects and events. |
|
0 |
Damasio;
Self Comes to Mind |
151 |
|
Neurons in anterior medial temporal cortices
can respond to unique objects, in perception and recall, with high specificity, suggesting that they receive convergence
signals. |
|
0 |
Damasio;
Self Comes to Mind |
151 |
|
To recognize or remember our 'grandmother,' we must reinstate a substantial part of the collection
of explicit maps that, in their entirety,
represent her meaning. |
|
0 |
Damasio;
Self Comes to Mind |
151 |
|
Like mirror
neurons, so-called 'grandmother
neurons' are CDZs. They enable time-locked
multiregional retroactivation of explicit maps in early sensorimotor cortices. |
|
0 |
Damasio; Self Comes to Mind |
153 |
|
The CDC
framework posits two somewhat separate "brain
spaces."
One space constructs explicit maps of objects
and events during perception and reconstructs them during recall. The other space holds
dispositions rather
than maps, i.e. implicit formulas for how to reconstruct maps in the image space. |
|
2 |
Damasio; Self Comes to Mind |
153 |
|
The explicit
image space is constituted by the aggregate of early sensorimotor cortices. |
|
0 |
Damasio; Self Comes to Mind |
153 |
|
The
implicit, dispositional space is constituted by
the aggregate of association cortices. |
|
0 |
Damasio;
Self Comes to Mind |
153 |
|
The two
brain spaces point to different ages in brain evolution, one in which dispositions sufficed to guide adequate behavior and another in which maps gave rise to images and to an upgrade of the quality of behavior. |
|
0 |
Damasio; Self Comes to Mind |
159 |
|
Being awake is a prerequisite of being conscious. |
|
6 |
Damasio; Self Comes to Mind |
159 |
|
Dream consciousness is not standard consciousness. |
|
0 |
Damasio;
Self Comes to Mind |
160 |
|
Images are
the main currency of our minds, and the term refers to patterns of all
sensory modalities, not just visual, and to abstract as well is concrete patterns. |
|
1 |
Damasio; Self Comes to Mind |
161 |
|
Patients in a vegetative state have no manifestation suggested of consciousness. |
|
1 |
Damasio;
Self Comes to Mind |
161 |
|
Along with wake-pattern
EEGs, patients in vegetative
state will often have
their eyes open,
although they stare vacantly into space, not directing their gaze to any particular object. |
|
0 |
Damasio;
Self Comes to Mind |
161 |
|
No
electrical EEG pattern
is noted when patients are in coma, a situation in which all
phenomena associated with consciousness (wakefulness, mind, and self) appear to be absent. |
|
0 |
Damasio;
Self Comes to Mind |
162 |
|
Direct brain observations, offer evidence compatible with some
preservation of both wakefulness and mind, while behavioral observations revealed no evidence that consciousness accompanies such
operations. |
|
1 |
Damasio; Self Comes to Mind |
162 |
|
Direct brain observation of vegetative state patients provides evidence that mind
processes operate unconsciously. |
|
0 |
Damasio; Self Comes to Mind |
166 |
|
Patients with disturbances of consciousness fail
to exhibit signs of ongoing emotion.
Their faces have a blank, vacuous
expression. |
|
4 |
Damasio; Self Comes to Mind |
166 |
|
Patients in any variant of akinetic mute or vegetative state, not to mention coma, have little or no emotional expression. |
|
0 |
Damasio; Self Comes to Mind |
167 |
|
Why are emotions such a telltale sign of consciousness? |
|
1 |
Damasio;
Self Comes to Mind |
167 |
|
The execution of most emotions is carried out by the periaqueductal gray (PAG) in close
cooperation with the nucleus tractus solitarius
(NTS) and the parabrachial
nucleus (PBN), the structures whose ensemble
engenders bodily feelings (such as primordial feelings) and the variations thereof that we call emotional feelings. |
|
0 |
Damasio;
Self Comes to Mind |
167 |
|
Just as signs
of emotion are part of the externally observable conscious state,
experiences of bodily feelings are a deep and vital part of consciousness from a first-person, introspective perspective. |
|
0 |
Damasio; Self Comes to Mind |
167 |
|
Consciousness fluctuates -- "intensity" scale of consciousness. |
|
0 |
Damasio; Self Comes to Mind |
168 |
|
Intensity scale ranges from dull to sharp,
with all the shades in between. |
|
1 |
Damasio; Self Comes to Mind |
168 |
|
Core consciousness -- the sense of the here and now, unencumbered by much past and by little or no future. |
|
0 |
Damasio;
Self Comes to Mind |
168 |
|
Extended or
autobiographical consciousness -- manifests itself powerfully when a
substantial part of one's life comes into play and both the lived past and the
anticipated future
dominate the proceedings. |
|
0 |
Damasio; Self Comes to Mind |
169 |
|
When we think about consciousness we usually have in
mind a broad-scope consciousness associated with an autobiographical
self. |
|
1 |
Damasio; Self Comes to Mind |
169 |
|
The levels
of consciousness fluctuate with the situation. |
|
0 |
Damasio; Self Comes to Mind |
170 |
|
The level of
consciousness shifts rapidly when one daydreams. |
|
1 |
Damasio; Self Comes to Mind |
170 |
|
Daydreaming
requires not merely a lateral wandering away from the contents of the activity at hand but it downshift core self. |
|
0 |
Damasio; Self Comes to Mind |
170 |
|
Online consciousness downshifted to core self and distracted to
another topic is still normal consciousness. |
|
0 |
Damasio; Self Comes to Mind |
170 |
|
The catalog of states of abnormal consciousness is long and
varied and includes the most inventive aberrations of mind and self |
|
0 |
Damasio; Self Comes to Mind |
170 |
|
Even in ever-so-faint states of consciousness, the self is a necessary presence in the mind. |
|
0 |
Damasio; Self Comes to Mind |
171 |
|
Consciousness
can be confined to the here and now or it can encompass a whole life
history. |
|
1 |
Damasio; Self Comes to Mind |
171 |
|
The core and extended or autobiographical kinds of consciousness are not rigid categories. |
|
0 |
Damasio; Self Comes to Mind |
171 |
|
Damasio has always envisioned many grades between core and autobiographical endpoints of the consciousness scale. |
|
0 |
Damasio; Self Comes to Mind |
171 |
|
We may propose that the lower notches of the consciousness scale are by no means human alone. |
|
0 |
Damasio;
Self Comes to Mind |
171 |
|
In all probability, the lower notches of the consciousness scale are present in numerous nonhuman
species that have brains
complex enough to construct them. |
|
0 |
Damasio;
Self Comes to Mind |
171 |
|
No one can prove satisfactorily
that nonhuman, nonlanguage
beings have consciousness, core or otherwise, although it is reasonable to conclude
that it is highly likely
that they do. |
|
0 |
Damasio; Self Comes to Mind |
172 |
|
Core consciousness does not require language. |
|
1 |
Damasio; Self Comes to Mind |
172 |
|
Autobiographical consciousness relies extensively on language. |
|
0 |
Damasio; Self Comes to Mind |
173 |
|
The brain constantly produces an overabundant
quantity of images. |
|
1 |
Damasio; Self Comes to Mind |
173 |
|
The brain's overabundance
of images requires a process of selecting the right images and ordering them in a procession of time units and space frames. |
|
0 |
Damasio; Self Comes to Mind |
173 |
|
Only a small
number of images can be displayed clearly at any given time because the image making space is so scarce. |
|
0 |
Damasio; Self Comes to Mind |
174 |
|
The making
of images was naturally
selected in evolution because images permit a more precise evaluation of the
environment. |
|
1 |
Damasio; Self Comes to Mind |
174 |
|
The strategic management
of images likely evolved
bottom-up, early own, well
before consciousness did. |
|
0 |
Damasio; Self Comes to Mind |
174 |
|
Especially valuable images, given their importance for survival, were 'highlighted' by emotional
factors. |
|
0 |
Damasio;
Self Comes to Mind |
174 |
|
The brain probably achieves the highlighting of especially valuable images by
generating an emotional state that accompanies the image in a parallel track.
This is the mechanism described in this "somatic
marker hypothesis." |
|
0 |
Damasio; Self Comes to Mind |
175 |
|
Gut feeling
-- fully formed emotion, overtly experienced as a feeling. |
|
1 |
Damasio; Self Comes to Mind |
175 |
|
A bias --
a covert, emotion related signal of which the subject is not aware. |
|
0 |
Damasio;
Self Comes to Mind |
176 |
|
The foundations
for the processes of
consciousness are the
unconscious processes
in charge of life
regulation -- the blind dispositions that regulate metabolic functions and are housed in brainstem
nuclei and
hypothalamus; the dispositions that deliver reward and punishment and promote drives, motivations, and emotion; and the mapping apparatus that manufactures images, in perception and recall, and that can select and edit such images. |
|
1 |
Damasio; Self Comes to Mind |
178 |
|
Dreams
offer direct evidence of mind processes unassisted by consciousness. |
|
2 |
Damasio; Self Comes to Mind |
178 |
|
During dreams some kind of nonstandard
consciousness is going on, the term paradoxical being quite apt. |
|
0 |
Damasio; Self Comes to Mind |
178 |
|
Lucid dreaming, during which trained dreamers manage to direct their dreams to a certain extent. |
|
0 |
Damasio; Self Comes to Mind |
178 |
|
Remembering dreams is a vexing issue. |
|
0 |
Damasio;
Self Comes to Mind |
179 |
|
We dream
profusely, several times a night, when we are in rapid eye movement
(REM) sleep, and we
even dream, albeit far less so, when we are in
slow wave sleep, also known as non-REM. |
|
1 |
Damasio; Self Comes to Mind |
180 |
|
The brain
constructs consciousness by generating a self process within an awake mind. |
|
1 |
Damasio; Self Comes to Mind |
180 |
|
The essence
of the self is a focusing of the mind on the
material organism that it inhabits. |
|
0 |
Damasio; Self Comes to Mind |
180 |
|
Wakefulness
and the mind are
indispensable components of consciousness, but the
self is the distinctive element. |
|
0 |
Damasio; Self Comes to Mind |
180 |
|
The self is built in stages.
The simplest stage emerges from the part of the brain
that stands for the
organism (the proto-self) and consists of gathering of
images that describe a relatively stable aspects of the body and
generate spontaneous feelings of the living body (primordial feelings). |
|
0 |
Damasio;
Self Comes to Mind |
180 |
|
The second
stage of the self results from establishing a relationship between the organism (as represented by the proto-self) and any part of the brain that represents an object-to-be-known. This results
in the core self. |
|
0 |
Damasio;
Self Comes to Mind |
181 |
|
The third
stage allows multiple
objects, previously recorded as lived experience or as anticipated future, to interact with a protoself and produce an abundance
of core self pulses. The result is the autobiographical self. |
|
1 |
Damasio; Self Comes to Mind |
181 |
|
All three stages of self
are constructed in separate but coordinated workspaces. |
|
0 |
Damasio;
Self Comes to Mind |
181 |
|
The image spaces of the self are the 'playground' for the abundance of
both ongoing perception and the dispositions contained in convergence-divergence
regions. |
|
0 |
Damasio;
Self Comes to Mind |
182 |
|
From an evolutionary standpoint, self processes were especially efficient at ordering and organizing minds toward the homeostatic needs of their organisms and thus increasing the chances of survival. |
|
1 |
Damasio;
Self Comes to Mind |
182 |
|
Much later in evolution, knowledge was deposited in memories residing inside the brain, held in convergence-divergence regions and
in memories that have
been recorded externally,
and instruments of culture. |
|
0 |
Damasio;
Self Comes to Mind |
182 |
|
Consciousness
in the fullest sense
of the term emerged after such knowledge was categorized, symbolized in various forms (including recursive
language), and manipulated by imagination and reason. |
|
0 |
Damasio;
Self Comes to Mind |
182 |
|
The ongoing digital
revolution, the globalization of cultural information, and the coming of the age of empathy are pressures likely to
lead to structural modifications of mind
and self. |
|
0 |
Damasio; Self Comes to Mind |
183 |
|
The reason why conscious minds prevailed in evolution was the fact that consciousness optimized life
regulation. |
|
1 |
Damasio; Self Comes to Mind |
183 |
|
The self in each conscious mind is the first representative of individual life regulation mechanisms. |
|
0 |
Damasio; Self Comes to Mind |
184 |
|
Introspection
can provide misleading information. |
|
1 |
Damasio;
Self Comes to Mind |
185 |
|
There is some deeper feeling to be found in the depths of the conscious mind. It is the feeling
that my own body
exists, and it is present, independently of any object with which it interacts, as a rock-solid, wordless
affirmation that I am alive. This fundamental feeling, a critical
element of the self process, is what Damasio calls a primordial
feeling. |
|
1 |
Damasio; Self Comes to Mind |
185 |
|
The primordial
feeling has a definite quality, a valence, somewhere along the pleasure-to-pain range. |
|
0 |
Damasio;
Self Comes to Mind |
185 |
|
The primordial
feeling is the primitive behind all feelings of emotion and therefore is the basis of all
feelings caused by interactions between objects and organism. |
|
0 |
Damasio; Self Comes to Mind |
185 |
|
Primordial feelings are produced by the protoself. |
|
0 |
Damasio;
Self Comes to Mind |
185 |
|
The conscious
mind is a composite
different images. One set of those
images describes the objects in consciousness. Other images describe me an individual. |
|
0 |
Damasio;
Self Comes to Mind |
185 |
|
Images that
describe me the
individual include: (1) the perspective in which the objects are being
mapped (the fact that my mind has a standpoint of dealing, touching,
hearing, and that the standpoint is my body); (2) the feeling that the objects have been represented in a mind belonging to me and no one else (ownership); (3) the feeling that I have agency relative to the objects
in that the actions
being carried out by my body are commanded by my mind; and (4) primordial feelings, which signify
the existence of my living body independently of how objects engage it or not. |
|
0 |
Damasio; Self Comes to Mind |
186 |
|
When the aggregate images
of the self are folded together with the images of the nonself objects, the result is a conscious mind. |
|
1 |
Damasio; Self Comes to Mind |
186 |
|
The basic
ingredients in the construction of conscious minds are wakefulness and images. |
|
0 |
Damasio; Self Comes to Mind |
186 |
|
Wakefulness
depends on the operation of certain nuclei in the brainstem tegmentum and the hypothalamus. Using both neural and chemical routes, these nuclei influence the cerebral
cortex. As a result, vigilance is either diminished (producing sleep) or enhanced (producing wakefulness). |
|
0 |
Damasio; Self Comes to Mind |
186 |
|
The function of the brain stem nuclei is assisted by
the thalamus. |
|
0 |
Damasio; Self Comes to Mind |
186 |
|
The delicate balance of wakefulness depends on the close interplay of the hypothalamus, brainstem, and cerebral cortex. |
|
0 |
Damasio; Self Comes to Mind |
187 |
|
The brainstem answers questions that no one poses, such as how much should the situation matter to the beholder? Value determines the signal and degree of emotional responses to a situation
as well as how awake and alert we are to be. |
|
1 |
Damasio; Self Comes to Mind |
187 |
|
Anesthetics
suspend wakefulness altogether |
|
0 |
Damasio;
Self Comes to Mind |
187 |
|
Brain stem wakefulness
nuclei are anatomically
close to the brain
stem protoself nuclei
for good reason: both sets of nuclei participate in life regulation. |
|
0 |
Damasio; Self Comes to Mind |
187 |
|
Images come
in all sensory varieties,
not just visual, and they pertain to any object or action being processed in the brain. |
|
0 |
Damasio; Self Comes to Mind |
188 |
|
Conscious minds arise from establishing a relationship between the organism and an object-to-be-known. |
|
1 |
Damasio; Self Comes to Mind |
188 |
|
The entire fabric of the conscious mind is created from images generated by the brain's map-making abilities. |
|
0 |
Damasio;
Self Comes to Mind |
188 |
|
Images that
represent the organism
are a particular class. They originate in the body's interior
and represent aspects of the body in action. They have a special status because they
are felt. |
|
0 |
Damasio; Self Comes to Mind |
188 |
|
Felt images of the body, primordial bodily feelings, are primitives of all of the feelings, including feelings of the emotions. |
|
0 |
Damasio;
Self Comes to Mind |
188 |
|
Images that
describe the relationship between the organism and object draw on both kinds of images -- conventional sensory images and variations on bodily feelings. |
|
0 |
Damasio;
Self Comes to Mind |
188 |
|
All images occur in an aggregate workspace form by separate early sensory
regions of the cerebral cortices and, in the case
of feelings, by selected regions of the brainstem. |
|
0 |
Damasio;
Self Comes to Mind |
189 |
|
The image
space is controlled by a number of cortical and subcortical sites whose circuits contain dispositional
knowledge recorded in dormant form in the convergence-divergence neural architecture. |
|
1 |
Damasio; Self Comes to Mind |
189 |
|
The image
space regions can operate either consciously or unconsciously, but in either case they do so within precisely
the same neural substrates. |
|
0 |
Damasio;
Self Comes to Mind |
189 |
|
The difference between conscious and unconscious modes of operation in
the participating regions depends on degrees of wakefulness and on the level of self processing. |
|
0 |
Damasio; Self Comes to Mind |
189 |
|
Bernard Baars originated the
notion of global workspace. |
|
0 |
Damasio; Self Comes to Mind |
189 |
|
Giulio Tononi on binocular rivalry. |
|
0 |
Damasio; Self Comes to Mind |
189 |
|
Conscious states require early sensory engagement and the engagement of association
cortices. |
|
0 |
Damasio; Self Comes to Mind |
190 |
|
The protoself is the basis for the construction
of the core self. |
|
1 |
Damasio;
Self Comes to Mind |
190 |
|
The protoself is an integrated collection of separate neural patterns that map,
moment by moment, the most
stable aspects of the organisms
physical structure. |
|
0 |
Damasio; Self Comes to Mind |
190 |
|
Protoself maps are distinctive in that they generate not merely body images but also felt body images. |
|
0 |
Damasio; Self Comes to Mind |
190 |
|
The primordial
feelings of the body are spontaneously present and in normal awake brain. |
|
0 |
Damasio; Self Comes to Mind |
190 |
|
The protoself includes master interoceptive maps, master organism maps, and externally directed sensory portal maps. |
|
0 |
Damasio; Self Comes to Mind |
190 |
|
From an anatomical
standpoint, protoself
maps arise both around the brainstem and from the cortical regions. |
|
0 |
Damasio; Self Comes to Mind |
190 |
|
The integration of all the diverse and spatially distributed
protoself maps takes place by cross signaling within the same time window. |
|
0 |
Damasio;
Self Comes to Mind |
190 |
|
The interoceptive
signals tell the
central nervous system about the ongoing state of the organism, which may range from optimal or the routine to the problematic. |
|
0 |
Damasio; Self Comes to Mind |
190 |
|
Nociceptive signals, which are the basis of feelings
of pain. |
|
0 |
Damasio; Self Comes to Mind |
190 |
|
Interoceptive signals signify the need for physiological
corrections, like feelings of hunger and thirst. |
|
0 |
Damasio; Self Comes to Mind |
191 |
|
Interoceptive signals participate in the making of hedonic
states and the
corresponding feelings of pleasure. |
|
1 |
Damasio; Self Comes to Mind |
191 |
|
On any given moment, a subset of
these interoceptive signals,
as assembled and modified in certain upper brain stem nuclei, generate primordial feelings. |
|
0 |
Damasio;
Self Comes to Mind |
191 |
|
The brain
stem is not a mere pass-through of the body signals to the cerebral cortex. It is a decision
station, capable of sensing
changes and responding
in predetermined but modulated ways. |
|
0 |
Damasio; Self Comes to Mind |
191 |
|
Primordial feelings are a byproduct of a particular way in which the brain stem nuclei are organized and
of their unbreakable loop with the body. |
|
0 |
Damasio; Self Comes to Mind |
193 |
|
Primordial feelings precede all of the feelings. |
|
2 |
Damasio; Self Comes to Mind |
194 |
|
The neural and chemical signals that describe body states enter the central nervous system at many levels of the spinal cord, the trigeminal nerve in the brain stem, and the special collections of
neurons that hover on the margin of the brain ventricles. |
|
1 |
Damasio;
Self Comes to Mind |
195 |
|
From all of the entry points,
the signals describing body states are relayed to major integrative
nuclei in the brainstem; the most important are in the nucleus
tractus solitarius, parabrachial
nucleus, and the hypothalamus. |
|
1 |
Damasio; Self Comes to Mind |
195 |
|
After being used to regulate life processes and
generate primordial feelings, the body-state brainstem signals are also relayed to the sector most clearly identified with interoreception, the insula cortex, after a stop in the thalamic
relay nuclei. |
|
0 |
Damasio; Self Comes to Mind |
195 |
|
Damasio believes that the brainstem component is foundational for the self process. |
|
0 |
Damasio; Self Comes to Mind |
195 |
|
The brainstem component can provide an operational protoself, even when they cortical component is extensively compromised. |
|
0 |
Damasio; Self Comes to Mind |
195 |
|
The master organism maps describe a schema of the entire body with its major components -- head,
trunk, and limb -- in repose. |
|
0 |
Damasio; Self Comes to Mind |
195 |
|
The movements
of the body are mapped against that master map. |
|
0 |
Damasio; Self Comes to Mind |
195 |
|
Unlike the
interoreceptive maps, the master organism maps change dramatically during development. |
|
0 |
Damasio; Self Comes to Mind |
195 |
|
The master
interoceptive system must fit within the general framework created by the master
organism schema. |
|
0 |
Damasio;
Self Comes to Mind |
196 |
|
The representation of the varied
sensory portals of the body
-- like the body regions encasing the eyes, ears, tongue, nose -- is a separate and special case of a master organism map. |
|
1 |
Damasio;
Self Comes to Mind |
196 |
|
Sensory portal maps play a dual role, first in the building of perspective (a major aspect of
consciousness) and then in the construction of qualitative aspects of mind. |
|
0 |
Damasio;
Self Comes to Mind |
196 |
|
One of the curious aspects of
our awareness of an object is the exquisite relation we established between the mental contents that describe the
object and those that correspond
to the body part
engaged in the perception. |
|
0 |
Damasio; Self Comes to Mind |
197 |
|
The ensemble of body structures encasing a
sensory structure constitutes what Damasio calls
a sensory portal. |
|
1 |
Damasio; Self Comes to Mind |
197 |
|
Eye movements
and blinking play a
critical role in the editing of our own visual images. |
|
0 |
Damasio;
Self Comes to Mind |
197 |
|
The sensory
portal for hearing is comparable to that for vision. The vibration of the tympanic membrane and a set of minuscule bones in the middle ear can be signaled to the brain in parallel with the sound itself, which occurs in the internal ear, at the level of the cochleas, where sound frequencies, time, and timbre are mapped. |
|
0 |
Damasio; Self Comes to Mind |
198 |
|
Sensory portals play a crucial role in defining the perspective of the mind relative to the rest of the world. |
|
1 |
Damasio; Self Comes to Mind |
198 |
|
An effect we all experience in
our minds: having a standpoint
for whatever is happening outside the mind. |
|
0 |
Damasio; Self Comes to Mind |
198 |
|
The standpoint is drawn from the collection of body regions around which perceptions arise. |
|
0 |
Damasio; Self Comes to Mind |
198 |
|
Organism perspective is grounded in a variety of
sources. |
|
0 |
Damasio;
Self Comes to Mind |
198 |
|
Sight, sound, spatial balance,
taste, and smell all depend on sensory portals not far from one another, all located
in the head.
We can think of the head is a multidimensional
surveillance device. |
|
0 |
Damasio;
Self Comes to Mind |
198 |
|
Touch has a
broader sensory portal,
but perspective
related to touch still
points unequivocally to the singular organism as the surveyor, and it identifies a place on the surveyor's surface. |
|
0 |
Damasio; Self Comes to Mind |
198 |
|
The perception of our own movement does relate to the entire body but always originates within
the singular organism. |
|
0 |
Damasio; Self Comes to Mind |
199 |
|
In the cerebral
cortex, most of the sensory
portal data must land in the somatosensory system -- with SI and SII favored over the insula. |
|
1 |
Damasio;
Self Comes to Mind |
199 |
|
For vision, sensory portal data are conveyed
to the frontal eye fields, which are located in Brodmann
area 8 in the superior and lateral aspects of the frontal cortex. |
|
0 |
Damasio;
Self Comes to Mind |
199 |
|
Somatosensory cortices convey signals from the external
world and from the body. The sensory portal component rightfully belongs to organism
structure and thus to protoself. |
|
0 |
Damasio;
Self Comes to Mind |
199 |
|
There is a remarkable contrast between the two distinct patterns -- the infinite variety of patterns
describing objects,
and the narrow range of patterns related to the body's interior and its tightly
controlled regulation. |
|
0 |
Damasio; Self Comes to Mind |
200 |
|
The fact that the body proper remains inseparably attached of the brain at all times underlies the
generation of primordial feelings and the unique relationship between body, as object, and the brain that represents that object. |
|
1 |
Damasio; Self Comes to Mind |
200 |
|
The protoself is a collection of maps that remains connected
interactively with its
source (the body), a
deep root that cannot be alienated. |
|
0 |
Damasio; Self Comes to Mind |
200 |
|
The protoself is not to be confused with a homunculus. |
|
0 |
Damasio; Self Comes to Mind |
201 |
|
Nothing could be further from Damasio's notion of protoself than the idea of homunculus. |
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The self would amount to the unadorned and felt representation of life within the brain, a sheer experience unconnected to anything but its own body. |
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The self consists of the primordial
feeling that the protoself, in its native state, spontaneously and relentlessly delivers, instant after instant. |
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Damasio;
Self Comes to Mind |
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The core self is created by linking
the modified protoself to the object that causes the modification, an object that now has been hallmarked by feeling and enhanced by attention. |
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Damasio;
Self Comes to Mind |
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The mind Includes images regarding a simple and very common sequence
of events -- an object
engaged the body when that object was looked at, touched, or heard, from a specific perspective; the engagement caused the body to change; the presence of the object was felt; the object was made salient. |
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Self Comes to Mind |
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Producing a conscious
mind is a series of images, an image of the organism (provided by the modified
protoself proxy); the
image of an object-related emotional response (i.e. a feeling); and an image of a momentarily enhanced causative
object. The self comes to mind in the form of images, relentlessly telling a story of
such engagements. |
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Self Comes to Mind |
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Michael Gazzaniga advanced the notion of "interpreter" as a way of explaining the generation of consciousness. He has related it to the machinery of the left hemisphere and to the language processes therein. |
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Damasio; Self Comes to Mind |
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The production of pulses of core self relative to a large number of objects
interacting with the organism guarantees the production of object-related
feelings.
Such feelings
construct a robust self
process that contributes to the maintenance of wakefulness. |
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The core
self pulses also confer degrees of value upon the images of the causative object, thus giving it
more or less salience. This differentiation of the flowing images organizes the landscape of the
mind, shaping it in relation to the needs and
goals of the organism. |
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Damasio; Self Comes to Mind |
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How might the brain implement the core self state? |
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Damasio; Self Comes to Mind |
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The interoceptive
component of the protoself is based in the upper brain stem and in the insula. |
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Damasio; Self Comes to Mind |
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The sensory
portal component of the protoself
is based in the conventional somatosensory cortices and frontal eye fields. |
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Self Comes to Mind |
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When a perceived
object precipitates an emotional
reaction and alters the master interoceptive maps, a modification of the protoself ensues, thus altering the primordial feelings. |
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Damasio; Self Comes to Mind |
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The sensory
portal components of the protoself change when an object engages a perceptual system. |
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Damasio; Self Comes to Mind |
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The regions
involved in making
images of the body inevitably change at protoself sites -- brainstem, insula cortex, and somatosensory cortices. |
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Damasio; Self Comes to Mind |
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The varied events generate microsequences of images that are introduced into the mind process. They are introduced into the image workspace of the early sensory cortices and of select regions of the brainstem, those in which feeling states are generated and modified. |
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Self Comes to Mind |
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The microsequences of images succeed each other like beats in a
pulse, irregularly but dependably, for as long is
events continue to happen in the wakefulness level is maintained above threshold |
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Damasio; Self Comes to Mind |
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A neural
coordinating device to create the coherent narrative that defines the
protoself. One candidate for the role of coordinator is the thalamus, specifically the associative nuclei of the thalamus, whose situation is ideal
to establish functional linkages among separate
sets of cortical
activity. |
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Damasio;
Self Comes to Mind |
209 |
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Reward nuclei
in regions such as the brainstem's ventral tegmental area, the nucleus accumbens, and the basal ganglia accomplish this
special treatment of images by selectively
releasing neuromodulators in image making areas. |
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Damasio; Self Comes to Mind |
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