term1 Definition1term2 Definition2term3 Definition3
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consciousness
The awareness of the sensations, thoughts, and feelings being experienced at a given moment.
stage 1 sleep
The state of transition between wakefulness and sleep, characterized by relatively rapid, low-amplitude brain waves.
A sleep deeper than that of stage 1, characterized by a slower, more regular wave pattern, along with momentary interruptions of “sleep spindles.”
stage 3 sleep
A sleep characterized by slow brain waves, with greater peaks and valleys in the wave pattern than in stage 2 sleep.
stage 4 sleep
The deepest stage of sleep, during which we are least responsive to outside stimulation.
rapid eye movement (REM) sleep
Sleep occupying 20% of an adult’s sleeping time, characterized by increased heart rate, blood pressure, and breathing rate; erections; eye movements; and the experience of dreaming.
unconscious wish fulfillment theory
Sigmund Freud’s theory that dreams represent unconscious wishes that dreamers desire to see fulfilled.
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