Scientific Understanding of Consciousness
Consciousness as an Emergent Property of Thalamocortical Activity

Sleep Stages Diagram

(György Buzsáki -  Rhythms of the Brain, 188)

 

 

Sleep is a dampened oscillation with approximately 90-minute periods.

Top: Hypnogram of a night's sleep in a young adult human. Note periodic ascending and de­scending phases.

Bottom: Representative scalp-recorded EEG segments from each sleep stage.

Return to — Sleep and Dreaming