PSY 201 Study Guide - Final Guide: Theta Wave, Light Stage, Diazepam
2 May 2016
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Study guide for psychology 201 exam 2. Circadian rhythms-latin term for about a day for changes that occur on a roughly 24- hour basis. Including hormone release, brain waves, body temperature, and drowsiness. Biological clock- a meager 20,000 neurons located in the hypothalamus make us feel. Drowsy at different times day and night. that"s why most of us feel like taking a nap at around 3 or 4 in the afternoon. Stage 1- light stage of sleep that lasts for about 5 to 10 minutes. produces theta waves. Stage 2- our brain waves slow down even more. Sleep spindles (sudden intense bursts of electrical activity) 12-14 cycles a second. Occasionally rising and falling waves known as k-complexes. Stage 3 & 4- after 10-30 minutes, light sleep gives way too much deeper slow-wave sleep, in which what we can observe as delta waves, which are as slow as 2 cycles per second.
