Sleep Paralysis: Pathogenesis, Clinical Manifestations, and Treatment Strategies.
Level 5 - mechanism / opinion, no new human data
Narrative review of mechanisms, clinical features, and management without meta-analytic data
PubMed 40919623 · doi:10.31083/JIN38979
What was done
The authors reviewed the literature on sleep paralysis, focusing on the neural circuits governing rapid eye movement (REM) sleep, mechanisms of muscle atonia, predisposing risk factors, clinical presentations, and management strategies. The review specifically compared isolated sleep paralysis with narcolepsy-associated sleep paralysis and examined the role of microsleep.
What was found
The abstract reports no quantitative metrics or effect sizes. It summarizes that sleep paralysis is an ICSD-3 classified REM parasomnia caused by failure to restore muscle tone during sleep-to-wake transitions despite preserved consciousness. The subcoeruleus nucleus (homologous to the rodent sublaterodorsal nucleus) within brainstem, forebrain, and hypothalamic circuits is identified as the primary driver of REM atonia.
Why it matters
The paper outlines the neuroanatomical circuitry underlying REM atonia and distinguishes between isolated sleep paralysis and narcolepsy-related presentations to guide clinical understanding.
Limits
The abstract provides no quantitative data, search methodology, or sample sizes. As a broad narrative review, it synthesizes existing hypotheses and mechanistic models rather than presenting new empirical trial data.