On the cellular level, non-REM sleep occurs because of
A) hyperpolarization of the cells of the thalamus and cortex.
B) depolarization of cortical neurons.
C) increased synaptic input between axons and neurons in the thalamus and cortex.
D) desynchronization of electrical impulses in the cortex.
E) increased release of neurotransmitters by the reticular activating system.

Question

Quizplus · Accepted Answer

Non-REM sleep is characterized by a decrease in neuronal activity in the thalamus and cortex, which is induced by hyperpolarization of these cells. This is a result of decreased synaptic input from the reticular activating system, which is responsible for maintaining wakefulness. Thus, choice A is the best answer as it accurately describes the cellular changes that occur during non-REM sleep.

On the Cellular Level, Non-REM Sleep Occurs Because of