Question

At 3 o'clock in the morning, John has already slept for four hours. As long as his sleep continues, we can expect an increasing occurrence of __________. Group of answer choices REM sleep hypnagogic sensations muscle tension NREM sleep

Answer 1

Answer:.

NREM

Step-by-step explanation:

NREM sleep: NREM (non-rapid eye movement) sleep is dreamless sleep. During NREM, the brain waves on the electroencephalographic (EEG) recording are typically slow and of high voltage, the breathing and heart rate are slow and regular, the blood pressure is low, and the sleeper is relatively still. NREM sleep is divided into 4 stages of increasing depth leading to REM sleep.

REM sleep is when dreams occur. We have 3 to 5 REM periods per night. They occur at intervals of 1-2 hours apart and are quite variable in length, ranging from 5 minutes to over an hour. REM sleep is characterized by rapid, low-voltage brain waves, irregular breathing and heart rate and involuntary muscle shocks.

About 80% of sleep is NREM sleep. If you sleep 7-8 hours a night, all but maybe an hour and a half is spent in dreamless NREM sleep.

Reference.:

Medical Definition of NREM sleep

Medical Author: William C. Shiel Jr., MD, FACP, FACR

Reviewed on 12/27/2018

Answer 2

REM sleep

Step-by-step explanation:

Based on the scenario being described within the question it can be said that we can expect an increasing occurrence of REM sleep. This acronym stands for Rapid eye movement sleep and is a specific phase in the sleep cycle in which the sleeper's eyes begin to move rapidly due to them being in a vivid dream. Since this usually happens when deeply asleep, after a couple of hours of falling asleep then we can assume that this will occur.