Chapter 4 consciousness 1 Altered States of Consciousness- Change in awareness produced by sleep, meditation, hypnosis, or drugs. 2 Circadian rhythms - Within each 24-hour period, the regular fluctuation from high to low points of certain bodily functions and behaviors. 3 Consciousness- Everything of which we are AWARE at any given time -- our thoughts, feelings, sensations, and perceptions of the external environment. 4 NREM Sleep : "quiet sleep" 4 sleep stages characterized by slow, regular…
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