AP PSYCHOLOGY

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STATES OF CONSCIOUSNESS

DREAMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
After sleeping for about an hour and a half, Sam enters a phase of paradoxical sleep. She is likely to
A
have very relaxed muscles.
B
be easily awakened.
C
talk in her sleep.
D
have slower brain waves.
Explanation: 

Detailed explanation-1: -Rapid eye movement (REM) sleep is called paradoxical sleep because it involves seemingly contradictory states of an active mind and a sleeping body.

Detailed explanation-2: -During paradoxical sleep your brain is very active, and your eyes move in a sharp, back and forth motion as opposed to a slower, more rolling fashion that occurs in other stages of sleep. However, even though your eyes are moving a lot and your brain is active, your muscles are in a state of almost complete paralysis.

Detailed explanation-3: -REM sleep is also known as paradoxical sleep because it resembles wakefulness with desynchronized electroencephalography (EEG) activity, phasic events such as REM, and bursts of muscle activity. REM sleep also is characterized by dreaming.

Detailed explanation-4: -Sleep occurs in five stages: wake, N1, N2, N3, and REM. Stages N1 to N3 are considered non-rapid eye movement (NREM) sleep, with each stage a progressively deeper sleep.

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