PSY 4327 Midterm: PSY 4327 notes Midterm One
2 Mar 2017
School
Department
Course
Professor
Document Summary
It typically takes more than 15-20 minutes to fall asleep. When sleep deprived it typically takes 2-3 days to recover. We sleep in 1. 5 hour cycles, with rem getting longer with each cycle (. 5 hours at the end of sleeping) Polysomnography involves recording of brain waves, eye movements, and neck muscle tension: works because many of the organs of the body generate small amounts of electrical energy. Eegs are the most important of all things recorded for identifying sleep stages: the shape of the waves, their frequency, and their intensity are the key components. The stages of sleep are designated as alert wakefulness, drowsy wakefulness, stages 1, 2, 3, 4 sleep, and rapid eye movement sleep (rem sleep: stages 3 and 4 are also down as slow wave sleep (sws) Science has shown that the intuitive notion of sleep is incorrect, and that something very active must be going on in the brain to produce sleep.
