npj Biological Timing and Sleep
June 22, 2026
I. Papp, Zoran Cvetković, Nazanin Biabani et al.
Abstract Nightmare disorder is historically conceptualised as a rapid eye movement (REM) sleep parasomnia, but evidence also points to altered non-rapid eye movement (NREM) sleep physiology. Here, in a retrospective case-control study, we analysed overnight polysomnography from 26 adults with nightmare disorder and 32 controls using a harmonised event-based EEG pipeline. Nightmare disorder...
Frontiers in Sleep
September 11, 2025
Nazanin Biabani, Martina Mulas, Carlotta Mutti et al.
2 citations
Background: REM sleep behavior disorder (RBD) is characterized by loss of normal muscle atonia during REM sleep, often associated with dream enactment behaviors, and is typically a prodromal neurodegenerative condition in middle-aged and older adults. However, emerging case reports and case series suggest that not all RBD presentations follow this trajectory, particularly in younger...
Nature and Science of Sleep
March 1, 2024
Qi Rui See, Kausar Raheel, Iain Duncan et al.
8 citations
Background: Speech graph analysis (SGA) of dreams has recently shown promise as an objective and language-invariant diagnostic tool that can aid neuropsychiatric diagnosis. Whilst the notion that dreaming mentations reflect distinct physiologic processes is not new, such studies in patients with sleep disorders remain exceptionally scarce. Here, using SGA and other dream content analyses, we...
Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine
June 15, 2020
Valentina Gnoni, Sean Higgins, Alexander David Nesbitt et al.
12 citations
Unpleasant dreamlike mentation can occur during non-rapid eye movement parasomnias, leading to associated panic attacks. The mentations are rarely remembered and are likely underreported. However, they may lead to significant personal distress and, if not addressed, may contribute to poorer clinical outcomes. Cotard le délire de negation are very rare nihilistic delusions, historically...