PSYC 191 Lecture Notes - Lecture 1: Slow-Wave Sleep, Delta Wave, Sleep Spindle
Document Summary
History, measuring sleep, sleep in animals and across development. Seems to be a discrete boundary between awake and sleep, but research. Dictionary definition-sleep is a reversible mental state of low attention to the environment typically accompanied by a relaxed posture and minimal movement oproblems-just lying down with eyes closed qualifies as sleeping, some. Historical conceptions of sleep and dreams people move around when sleeping and not always relaxed. Thought sleep was going into a dream and dreams lasted all night. Sleep thought to be important because it was entering another world. Dreams were at root of mysticism and religion (predictions and meanings) Prepsychology era, sleep hard to study because lack of communication between patient and researcher, so focused on observable signs: sleep thought to be slowing down of brain to clear contamination built up while awake sleep. Blood filling brain during day, return to body during sleep. Vapors from food- vapors poisonous in brain and left during.
