Muscle Atonia - an overview | ScienceDirect Topics
In these patients, somatic muscle atonia —one of the defining features of REM sleep—is absent, thereby permitting the acting out of dream mentation, often with violent or injurious results. The initial complaint is vigorous sleep behavior usually accompanying vivid dreams.
REM Behavior Disorder - Stanford Health Care
REM behavior disorder occurs when the body maintains relatively increased muscle tone during REM sleep, allowing the sleeper to move and act out their dreams. Movements may be as minor as leg twitches, but can result in very complex behavior that may cause serious injury to the individual or the bed partner.
REM sleep behavior disorder - Symptoms and causes - Mayo Clinic
2018年1月18日 · With REM sleep behavior disorder, instead of experiencing the normal temporary paralysis of your arms and legs (atonia) during REM sleep, you physically act out your dreams. The onset can be gradual or sudden, and episodes may occur occasionally or several times a night. The disorder often worsens with time.
How muscles are paralyzed during sleep: Finding may suggest …
2012年7月17日 · Two powerful brain chemical systems work together to paralyze skeletal muscles during rapid eye movement (REM) sleep, according to new research. The finding may help scientists better understand...
Muscle Atonia - an overview | ScienceDirect Topics
Muscle atonia refers to the loss of muscle tone during REM sleep, leading to temporary paralysis of skeletal muscles. This phenomenon is crucial for preventing individuals from acting out their dreams and is regulated by specific brain regions involved in the sleep-wake cycle.
Muscle Atonia - an overview | ScienceDirect Topics
Muscle atonia. The near-complete loss of tone in the muscles of postural support that occurs during rapid eye movement (REM) sleep.
Sleep paralysis: Causes, symptoms, and treatments
2023年10月20日 · During REM, the eyes move quickly and vivid dreaming occurs, but the muscles of the body are relaxed to reduce movement. This muscle relaxation is controlled by the brain and called REM atonia. The purpose of atonia is to keep you from acting out your dreams, and typically ends when you wake up.
Understanding REM Sleep Behavior Disorder - News-Medical.net
2023年6月6日 · Rapid Eye Movement (REM) sleep behavior disorder or RBD is a serious medical condition involving dream enactment behavior and loss of muscle atonia. It is far from...
The anatomical, cellular and synaptic basis of motor atonia during ...
Across REM sleep, tonic muscle atonia is periodically interrupted by a volley of muscle twitches and jerks, i.e. phasic activity. This myoclonic activity is mediated by a glutamatergic input and by the activation of AMPA postsynaptic glutamate receptors in spinal postural and cranial orofacial motor neurons (Chase & Morales, 1982 , 1983 ; Soja ...
The Motor Atonia of REM Sleep: A Critical Topics Forum
2008年11月1日 · The human body contains approximately 700 muscles raising the question of which muscle groups are most appropriate for the study of REM sleep atonia. The focus article 1 of this Critical Topics Forum describes studies of the masseter muscle, which is innervated by motoneurons in the trigeminal nucleus.