PSYC 1020H Lecture Notes - Lecture 6: Sleep Deprivation, Caffeine, Narcolepsy

• School: Trent University
• Department: Psychology
• Course: PSYC 1020H
• Professor: Hugo Lehmann

Document Summary

Metabolic activity of the scn is higher during the light period of the day-night cycle. Neurons in the scn are more active during the light period. Neurons in the scn maintain their rhythmic electrical activity even when. Doberman pincher will fall asleep without reason. Stage 2: alpha and theta activity, transition between sleep and wakefulness, theta activity and sleep spindles, theta and spindles seems important for memory. There are hypotheses but we do not know *exam* Sleep cycle: cycle is usually about 90 min, 4-6 rem cycles a night, rem duration increase throughout the night (from 5-10 min to 30-70 min) The purpose of sleep: we do not know, possibilities: restorative process, memory story, passive process, biological adaption. Testing the restorative process: sleep deprivation, null hypothesis prediction, alternative hypothesis prediction, findings (humans participants): No marked physiological effects, at least in period that have been tested (up to 18 days) No obvious effects in the first 7-10 days.