Neuroscience and Biobehavioral Reviews
April 1, 2023
Péter Simor, Philippe Peigneux, Róbert Bódizs
Dreams are often viewed as fascinating but irrelevant mental epihenomena of the sleeping mind with questionable functional relevance. Despite long hours of oneiric activity, and high individual differences in dream recall, dreams are lost into oblivion. Here, we conceptualize dreaming and dream amnesia as inherent aspects of the reactive and predictive homeostatic functions of sleep. Mental...
NeuroImage. Clinical
2022
Tamás Bogdány, Pandelis Perakakis, Róbert Bódizs et al.
Frequent nightmares are highly prevalent and constitute a risk factor for a wide range of psychopathological conditions. Despite its prevalence and clinical relevance however, the pathophysiological mechanisms of nightmares are poorly understood. A recent study (Perogamvros et, al 2019) examined the heart beat evoked potential (HEP) in a small group of nightmare sufferers (N = 11) and matched...
Mentálhigiéné és Pszichoszomatika
June 1, 2016
Piroska Sándor, Sára Szakadát, Róbert Bódizs
Introduction Although REM sleep plays an important role in neural maturation, developmental aspects of dream research are relatively neglected compared to studies focusing on adults. Adult research found that REM sleep and dreams take certain roles in emotional adaptation, including the processing of emotional events, consolidation of emotional memories and the downregulation of reactions to...
Brain and Cognition
November 1, 2014
Péter Simor, János Körmendi, Klára Horváth et al.
Abnormal arousal processes, sympathetic influences, as well as wake-like alpha activity during sleep were reported as pathophysiological features of Nightmare Disorder. We hypothesized that in Nightmare Disorder, wake-like cortical activity and peripheral measures linked to arousals would be triggered by physiological processes related to the initiation of REM periods. Therefore, we examined...
Biological Psychology
December 1, 2013
Péter Simor, Klára Horváth, Péter P Ujma et al.
Although a growing body of research indicates that frequent nightmares are related to impaired sleep regulation, the pathophysiology of nightmare disorder is far from being fully understood. We examined the relative spectral power values for NREM and REM sleep separately in 19 individuals with nightmare disorder and 21 healthy controls, based on polysomnographic recordings of the second nights'...
Brain and Cognition
April 1, 2012
Péter Simor, Péter Pajkossy, Klára Horváth et al.
Nightmare disorder is a prevalent parasomnia characterized by vivid and highly unpleasant dream experiences during night time sleep. The neural background of disturbed dreaming was proposed to be associated with impaired prefrontal and fronto-limbic functioning during REM sleep. We hypothesized that the impaired prefrontal and fronto-limbic functioning in subjects with frequent nightmares would...
Attachment & human development
March 1, 2011
Szilvia Csóka, Péter Simor, Gabor Szabo et al.
Early maternal separation is a particularly stressful experience. Current models of nightmare production emphasize negative emotionality as having a central role in determining dream affect. Our aim is to test the hypothesis that persons who experienced early maternal separation (before one year of age and lasting at least one month) report more frequent nightmare experiences and bad dreams as...
The European Journal of Psychiatry
March 1, 2010
Péter Simor, Szilvia Csóka, Róbert Bódizs
35 citations
Background and Objectives: Previous studies reported a high prevalence of nightmares and dream anxiety in Borderline Personality Disorder (BPD) and the severity of dream disturbances correlated with daytime symptoms of psychopathology. However, the majority of these results are based on retrospective questionnaire-based study designs, and hence the effect of recall biases (characteristic for...
European Journal of Mental Health
June 1, 2008
Róbert Bódizs, Péter Simor, Szilvia Csóka et al.
31 citations
Both neurobiological and cognitive psychological evidence suggests that dreams reflect the affective concerns and emotional balance of the dreamer. Moreover, there is increasing evidence for the thesis that dreams take part in the process of emotional regulation by creating narrative structures and new associations for memories with emotional and personal relevance and giving birth to a reduced...
Brain Research Bulletin
March 15, 2005
Róbert Bódizs, Melinda Sverteczki, Alpár Sándor Lázár et al.
The covert-rapid-eye-movement (REM) sleep hypothesis of dreaming suggests that elements of REM sleep emerge during sleep onset, leading to vivid hypnagogic imagery. Based on parahippocampal electrocorticography of epileptic patients we found an increase in REM-like 1.5-3.0 Hz parahippocampal activity during wake-sleep transition, which peaks after on average 30s of sleep onset, and reaches 82%...