PSY 1001 Lecture Notes - Lecture 8: Sleep Spindle, 24Hours, Melatonin

• School: University of Iowa
• Department: Psychology
• Course: PSY 1001
• Professor: Vecera Shaun

Document Summary

What determines what time we go to sleep, and how long we sleep: amount of sleep, metabolic rate highly correlated with the amount an animal sleeps. Sleep stages: theta waves: stage 1, develop sleep spindles and k-complexes: stage 2, transition b/w light sleep and deep sleep: stage 3, delta waves: stage 4, eye movement, dreams, muscle paralysis: rem sleep. Rapid eye movement (rem) sleep is where the majority of dreaming takes place. 5 stages of sleep (when we include rem sleep) Because when you don"t know the time so you wont leave versus when you do. Shield participants from time sues (aka clocks, natural sun light) Human and animals capable of maintaining 24-hour activity patterns in the absences of external cues such as light and changes in temperature. Circadian rhythm any biological process that displays an internal, adaptable. Suprachiasmatic nucleus a nucleus of the hypothalamus; tells when to go to sleep.