The first people to observe this phenomenon were Nathaniel Kleitman and his students in 1953. They suspected that these recordings were indicative of dream episodes. Further studies have determined that the Rapid Eye Movements correspond to what the dreamer is looking at or following with his or her eyes within the dream. PCPA decrease in sleep, Warm milk, turkey dinner increases sleep ii. Upregulation of receptors, recharge trophic mechanisms .
Sleep is period of retraction of cytoskeleton.
SD c. Oleamide is a lipid which induces sleep, increased during SD, acts on 5-HT receptors d. Interleukins , powerful cytokines, involved in fever and sleep, at low doses increase serotonin metabolism and induce sleep Sleep and learning a. Hypothesis of sleep effects on learning, Removal of extraneous associations made during day. Rats in maze have more REM ii. 44 college students put in all nighter and take test in critical thinking. Perform worst than 8-hour controls but were more confident they had done better, able to focus more.