01:830:310 Lecture Notes - Lecture 11: Slow-Wave Sleep, Non-Rapid Eye Movement Sleep, Delta Wave
12 Feb 2018
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Sleep spindle (tight, dark, overlap, small): brain activity which is visible during an. Sleep stages 3 & 4 (deeper sleep): delta waves, highest amplitude, lowest frequency. Waves on an eeg during a coma are very slow (low frequency), also low amplitude; delta waves have high amplitude: what are the differences between rem and nrem sleep w. r. t. movement of body parts (eyes, limbs etc). Rem sleep: brain is active, eyes are moving, body and muscles are paralyzed/immobile from the neck down. Nrem sleep: body is mobile and brain is asleep; twitching, turning, kicking, sometimes sleep walking: explain the sleep cycles that one goes through in a normal night (both stages and. 90 minute cycles, go through 3 stages in order. Starts with low amplitude, fast waves to high amplitude, slow waves, and then rem sleep with is fast and random just before sleep (alpha waves relaxed state) 75% nrem sleep and 25% rem sleep (short periods each 90 minutes)
