PS100 Lecture Notes - Lecture 16: Lucid Dream, Sleep Deprivation, Sleep Spindle
Document Summary
Beta waves look like rem sleep: stage 1-alpha waves, stage 2-beta waves (sleep spindles), stage 3 and 4 is a deep sleep with delta waves. You can control your dreams (lucid dreaming) As we get closer to our wake time, we dream more so we are in a rem state. Little rem at the beginning, probably in deep sleep (complete rest of your body), usually during a long period of sleep you go into total relaxation and then you go into an active state (rem occasionally) Effects of environmental factors: change in season (photoreceptors in eyes depend on light, shiftwork, stress, noise (increase in arousal and heart rate, decrease time in deep slow-wave sleep, increase time in less restful sleep) Rem sleep decreases during infancy, childhood: ba(cid:271)ies spe(cid:374)d 50% of their sleep i(cid:374) rem ti(cid:373)e (cid:894)as you get older you sleep less a(cid:374)d you do(cid:374)"t have as much time in rem) Time in stages3, 4 (slow-wave sleep) declines.
