Rem sleep
REM Sleep
Rapid Eye Movement (REM) sleep is a unique phase of sleep in mammals and birds, distinguishable by random/rapid movement of the eyes, accompanied with low muscle tone throughout the body, and the propensity of the sleeper to dream vividly.
Overview[edit | edit source]
The REM phase in sleep is the portion of sleep when there are dreams and eye movement. It is characterized by the rapid and random movement of the eyes. REM sleep is classified into two categories: tonic and phasic.[1] It may include other features such as changes in heart rate and muscle paralysis.
Physiology[edit | edit source]
During REM sleep, electrical connectivity among different parts of the brain manifests differently than during wakefulness. Research suggests that REM sleep features a shift towards Thalamocortical system dominance.
Function[edit | edit source]
The function of REM sleep is not well understood. However, several theories have been proposed, including that REM sleep aids in brain development, contributes to memory consolidation, and assists in emotion regulation.
In other animals[edit | edit source]
REM sleep has been observed in all mammals studied, including monkeys, dogs, cats, rats, elephants, and opossums. It has also been observed in birds.
See also[edit | edit source]
References[edit | edit source]
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Contributors: Prab R. Tumpati, MD
