Truly "deep" sleep does not occur during REM sleep. REM sleep is when you are dreaming. It is deeper than light sleep, but not as far down in unconsciousness as "deep" sleep.
Which of the following does not occur during REM sleep
During REM sleep, people seldom dream.
increased gastrointestinal activity
Brain waves become very long and slow
Which statement is incorrect
They occur during REM sleep, usually in the second half of the night
They occur during REM sleep, usually in the second half of the night
sleep spindles
Sleep Spindals
The dreams that we remember tend to only occur during REM sleep. However, new research is showing us that dreams can actually happen in NREM sleep. Research is still being done to determine exactly what kind of dreams when have in the different stages of sleep.
Most vivid dreams occur during REM sleep, which stands for Rapid Eye Movement. REM The vividness of dreams might depend more on whether one awakens directly from the dream or not, rather than the stage of sleep where dreams occur. Sleep studies have shown that REM (rapid eye movement) sleep correlates closely with dreaming, but dreams occur during other sleep stages as well. Night terrors, sleep walking and other disturbances tend to appear during deep or slow-wave sleep, Stage N3. See the attached Wikipedia article, below, for further information and resources. In REM sleep. REM-sleep. It stands for rapid eye movement, a characteristic of dreaming in which the eyes flutter side to side very quickly as the brain works. It happens during stage 5 of sleep.
No, during REM sleep, the brain is active, however any muscle activity is suppressed to prevent you from acting out dreams. During stages 3 and 4 of NREM sleep sleepwalking is known to occur.
Very recent research suggests that dreams that occur during REM sleep tend to be more agitated and troubled than dreams that occur during non-REM sleep. More research is being done to better understand the difference.
REM (Random Eye Movement).
It happens in the 4th stage
Peak concentrations of the levels of stress hormones in the bloodstream occur during the final stages of sleep.
Tonic seizures commonly occur during non-rapid eye movement (non-REM) sleep and drowsiness.