Rapid eye movement sleep resemblance to waking life), and incorporation of instinctual themes. Sometimes they include elements of the dreamer's recent experience taken directly from episodic memory. By one estimate, 80% of dreams occur during REM. Hobson and McCarley proposed that the PGO waves characteristic of “phasic” REM might supply the visual cortex and forebrain with electrical excitement which amplifies the hallucinatory aspects of dreaming. However, people woken up during sleep do not report significantly more bizarre dreams during phasic REMS, compared to tonic REMS. Another possible relationship between the two phenomena could be that the higher threshold for sensory interruption during REM sleep
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