Rapid eye movement sleep behavior disorder Rapid eye movement sleep behavior disorder Rapid eye movement sleep behavior disorder (RBD) is a sleep disorder (more specifically a parasomnia) in which people act out their dreams. It involves abnormal behavior during the sleep phase with rapid eye movement (REM) sleep. The major feature of RBD is loss of muscle atonia (i.e., the loss of paralysis) during otherwise intact REM sleep (during which paralysis is not only normal but necessary). REM sleep is the stage of sleep in which most vivid dreaming occurs. The loss of motor inhibition leads to a wide spectrum of behavioral release during sleep. This
Dementia with Lewy bodies planning and organizing. Deficits can present with impaired job performance, difficulty multitasking, inability to follow conversations or problems driving a car—such as misjudging distances or becoming lost. A person with DLB may experience problems of wakefulness or sleep disorders including daytime sleepiness, drowsiness or napping more than two hours a day, insomnia, and restless legs syndrome. REM sleep behavior disorder is a parasomnia in which individuals with RBD lose the paralysis of muscles (atonia) that is normal during rapid eye movement (REM) sleep, and act out their dreams or have other abnormal movements or vocalizations. About 80% of people with