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​Sleep is a confounding neurological need. Although there are different cycles of sleep and levels of neural activity during sleep; not all observed cycles of sleep cause difficulty if deprived.

Patients deprived of REM sleep do not exhibit neural dysfunction during awake states. However, patients deprived of stage 4 deep sleep show reduced neural activity during awake states.

If a patient is sleep-deprived, which of the following behaviors would be observed?


A decrease in anxiety associated behaviors.


No change in the ability to perform physical exercise.


Improved cognitive functioning.


A decrease eye movement during the next REM cycle.

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