PSYC 100 Lecture Notes - Lecture 7: Jet Lag, Sleep Deprivation, Polysomnography

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Jordan Poppenk

Document Summary

Circadian rhythms- daily cycle that affect physiological and behavioural processes. Entrainment- when these rhythms sync with the outside world- temp, light, or even a clock. Endogenous rhythms- when biological rhythms are independent from the outside world. Rem sleep (paradoxal sleep)- stage of sleep where brain waves quicken, causing body movements and rapid eye movements. Sleep deprivation- when someone is unable to sleep. Sleep displacement- when someone is prevented from sleeping at a normal time. Jet lag- discomfort a person feels when their sleep cycles are out of sync with light and darkness. Restore and repair hypothesis- body needs to repair and restore its energy. Preserve and protect hypothesis- we sleep to preserve energy and protect our body from harm. Latent content- symbolic meaning of a dream (based on suppressed sexual/aggressive urges) Activation-synthesis hypothesis- dreams arise from bursts of messages from pons (brainstem) The brain tries to piece together these randomly activated images.