Rapid eye movement (REM) sleep is a stage of sleep that is characterised by rapid eye movements, increased brain activity, and vivid dreams. It is one of several stages of sleep that the human body goes through during a typical sleep cycle.
During REM sleep, the body is in a state of deep relaxation, with most muscles paralysed. However, the brain is highly active, and the eyes move rapidly back and forth behind closed eyelids. This is where the name "rapid eye movement" comes from.
REM sleep typically occurs several times throughout the night and becomes longer as the night goes on. It is believed to play an important role in a number of physiological and psychological functions, including memory consolidation, emotional regulation, and learning.
Disruptions to REM sleep can have a number of negative effects on both physical and mental health. Sleep disorders that disrupt REM sleep, such as REM sleep behaviour disorder and narcolepsy, can cause problems with memory, concentration, and emotional regulation. In addition, chronic sleep deprivation can lead to a range of health problems, including an increased risk of heart disease, stroke, and depression.
Rapid eye movement sleep
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