During paradoxical sleep,
A)Brain neurotransmitter activity in the pathways regulating states of consciousness is similar to that in the awake state
B)Brain oxygen consumption is lower than when awake
C)Skeletal muscle tension is dramatically increased
D)The person is easily aroused
E)All of the choices occur

Question

Quizplus · Accepted Answer

During paradoxical sleep (also known as REM sleep), brain neurotransmitter activity in the pathways regulating states of consciousness is similar to that in the awake state. This is why dreams during REM sleep can feel so vivid and real. Choices B, C, and D are all incorrect: brain oxygen consumption is actually higher during REM sleep than in non-REM sleep or awake states; skeletal muscle tension is actually decreased during REM sleep (which is why it is sometimes referred to as "paralyzed sleep"); and people in REM sleep are more difficult to arouse than those in other stages of sleep.

During Paradoxical Sleep