States of Consciousness Exam Solved 100% Correct!!

consciousness - an awareness of ourselves and our environments circadian rhythm - the biological clock; regular bodily rhythms (for example, of temperature and wakefulness) that occur on a 24-hour cycle suprachiasmatic nucleus (SCN) - a pair of cell clusters in the hypothalamus that controls circadian rhythm. In response to light, it causes the pineal gland to adjust melatonin production, modifying feelings of sleepiness. REM sleep - rapid eye movement sleep, a recurring sleep stage during which vivid dreams commonly occur; also known as paradoxical sleep because muscles are relaxed but body is active alpha waves - the relatively slow brain waves of a relaxed, awake state sleep - Periodic, natural, reversible loss of consciousness - as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation hallucinations - false sensory experiences, such as seeing something in the absence of an external visual stimulus NREM-1 - the transition into sleep, marked by slowed breathing and irregular brain waves; hypnagogic sensations/hallucinations, and myclonic jerks may occur NREM-2 - Sleep stage characterized by its periodic sleep spindles, or bursts of rapid, rhythmic brain-wave activity. About half the night is spent in this phase. NREM-3 - sleep stage that lasts about 30 minutes and your brain emits large, slow delta waves, and you are hard to waves - the large, slow brain waves associated with deep sleep