REM rebound involves the phenomenon of experiencing an intense and prolonged period of REM sleep after a period of REM sleep deprivation or suppression. This rebound effect is characterized by increased REM latency (the time it takes to enter REM sleep) and increased REM density, resulting in more vivid and intense dreams. It may occur due to various biochemical, physiological, psychological, and environmental factors, such as sleep deprivation, medication discontinuation, and underlying sleep disorders.
