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Nealk2013 VA ch4 Consciousness

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Consciousness

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Terms in this set (27)

Our awareness of various cognitive processes, such as sleeping, dreaming, concentrating, and making decisions.

Altered states of consciousness

Mental states that differ noticeably from normal waking consciousness (e.g., hypnosis)

Circadian Rhythm

A physiological cycle of about 24 hours that is present in all eukaryotic organisms and that persists even in the absence of external cues.

Suprachiasmatic Nucleus (SCN)

A cluster of neurons in the hypothalamus that receives input from the retina regarding light and dark cycles and is involved in regulating the biological clock.

Rapid-eye movement (REM) or paradoxical sleep

brain-wave activity is remarkably similar to that of waking state. Eyes dart beneath lids; heart rate, blood pressure and breathing uneven; and slight body movements occu