PSYO 1011 Chapter Notes -Narcolepsy, Adenosine, Hypnosis

• School: Dalhousie University
• Department: Psychology
• Course: PSYO 1011
• Professor: n/a

Document Summary

~90 min cycle through different stages of sleep: brain activity & physiological responses change in a predictable way, beta waves, alpha waves, occur when awake & alert, high frequency (15 30 cps) but low amplitude, relaxed & drowsy, low frequency (8 12 cps) Rem sleep: rapid eye movement sleep, sleeper"s eyeballs move vigorously back & forth underneath lids, body highly aroused but there is little to no movement, vivid dreams, each cycle through sleep stages takes about 90 min, as hours pass, stage 4 & 3 drop out & rem periods become longer. Late adulthood, little slow wave sleep: how much sleep a person needs is influenced by, genetic factors, work schedules, stress, age, general health. Why do we sleep: restoration model, sleep recharges our run down bodies & allows us to recover from physical & mental fatigue, need sleep to function at our emotional, mental & physical best, what gets restored, adenosine & sleep.