STATES OF CONSCIOUSNESS
PSYCHOLOGY OF SLEEP
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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our heart rate is slow and steady, while our breathing is highly irregular.
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our heart rate is slow and steady, while our breathing is highly irregular.
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our nervous system is highly active, while our voluntary muscles hardly move.
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our brain and nervous system are less active and our muscles are very active.
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Detailed explanation-1: -REM sleep is called “paradoxical” because of its similarities to wakefulness. Although the body is paralyzed, the brain acts as if it is somewhat awake, with cerebral neurons firing with the same overall intensity as in wakefulness.
Detailed explanation-2: -Why Is REM Sleep Called Paradoxical Sleep? 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-3: -During REM, the brain is very active, and dreams are at their most intense. But the voluntary muscles of the body-arms, legs, fingers, anything that is under conscious control-are paralyzed. Exactly how the muscles are paralyzed has been a mystery, however.
Detailed explanation-4: -The phase of sleep in which most dreams occur. During REM sleep, a person’s brain activity, breathing, heart rate, and blood pressure increase, and the eyes move rapidly while closed. The muscles in the arms and legs become temporarily unable to move.
Detailed explanation-5: -During REM sleep, brain activity increases, voluntary muscles are inhibited, and rapid eye movements and dreams occur (McCarley et al., 1995).