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Flashcards in Chapter 4 Deck (15):
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Attention

The capacity to selectively focus awareness on particular stimuli in your external environment or on your internal thoughts or sensations.

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Characteristic of attention

Attention has a limited capacity

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Circadian rhythm

A cycle or rhythm that is roughly 24 hours long; the cyclical daily fluctuations in biological and psychological processes

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Melatonin

A hormone manufactured by the pineal gland that produces sleepiness.

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Characteristic of NREM

Dreamless sleep, no eye movement, quiet sleep, divided into 4 stage; stage 1 can quietly regain conscious if needed

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Characteristic of REM

Brain becomes more active, smaller and faster brain waves, dreams usually occur

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Dreams

An unfolding sequence of thoughts, perceptions, and emotions that typically occurs during REM sleep and is experienced as a series of real-life events.

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Nightmares

A vivid and frightening or unpleasant anxiety dream that occurs during REM sleep.

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Insomnia

A condition in which a person regularly experiences an inability to fall asleep, to stay asleep, or to feel adequately rested by sleep.

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Sleepwalking

A sleep disturbance characterized by an episode of walking or performing other actions during stage 3 or stage 4 NREM sleep; also called somnambulism.

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Sleepsex

sleep disorder involving abnormal sexual behaviors and experiences during sleep; also called sexsomnia.

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Sleep related eating disorder

A sleep disorder in which the sleeper will sleepwalk and eat compulsively with no recollection

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Four categories of psychoactive drugs

Stimulants, opiates, depressants, psychoactive drugs

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Depressants

A category of psychoactive drugs that depress or inhibit brain activity.

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Stimulants

A category of psychoactive drugs that increase brain activity, arouse behavior, and increase mental alertness.