PSY_1_SleepRev - NOTE All course materials(class lectures...

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NOTE All course materials (class lectures and discussions, handouts, examinations, Web materials) and the intellectual content of the course itself are protected by United States Federal Copyright Law, and the California Civil Code. UC Policy 102.23 expressly prohibits students (and all other persons) from recording lectures or discussions and from distributing or selling lectures notes and all other course materials without the prior written permission of the Instructor (see ). Students are permitted to make notes solely for their own private educational use. Exceptions to accommodate students with disabilities may be granted with appropriate documentation. To be clear, in this class students are forbidden from completing study guides and selling them to any person or organization. This text has been approved by UC General Counsel. Sleep Psy 1 Lecture Notes Alan J. Fridlund, Ph.D. Polysomnography EEG – Electroencephalogram- reads ur brain waves; brain goes through lots of changes while youre asleep EOG – Electrooculogram- eyes move all through the night; electrodes on eyelids EMG – Electromyogram - electrodes on limbs; picked up muscle twitches EKG – Electrocardiogram -electrodes on chest, k for cardio, heart detection RR – Respiration rate - temp sensors on nose, detecting respiration rate when u breathe at night O2 / CO2 saturation / desaturation - measure how red your blood is (lotta oxygen = very red…low oxygen= blue/purple). Drew blood/ nowadays put a clip on finger with red light passing through to see how much red light is transmitted see how red and therefore how much oxygen in blood oxygen obstruction at night visible via blood turning purple “Dual Sleep” Non-REM Sleep REM Sleep Stage 1- daydream phase as u fall asleep Stage 2- eeg slowing down, w sleep spindles (spikes) Stage 3+4 (Delta)- deepest sleep, refreshing sleep, super slow REM period eyes stop just wandering around into rapid flickering “paradox sleep” they look dead to the world but their EEG looks like when theyre awake EEG Changes During Sleep (Picture)
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Qualities of Dual Sleep All orders of mammals seem to have dual sleep except monotremes (e.g., anteaters, duckbill platypi) and cetaceans (e.g., whales). Theyre homeotherms so theyre mammals but they lay eggs so diff…no REM 85% of mammals have polyphasic (they take naps and wake up 24/7) sleep. Humans (except infants) have monophasic ( we have sleep time and wake up time and are usually awake for rest of day) sleep, and shouldn’t try to be polyphasic. Polyphasic sleep is damaging to our immune system, compromising our functions in health and cognition; cant just have all naps, we need a full nights sleep The human sleep-wake cycle governed by an internal 25-hour circadian rhythm , tuned externally to 24 hr by the sun. Mammals differ widely in how long they sleep.
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