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Analysis of postarousal EEG activity during somnambulistic episodes.
J Sleep Res. 2004 Sep; 13(3):279-84.JS

Abstract

Early studies found that electroencephalographic (EEG) recordings during somnambulistic episodes were characterized by a combination of alpha, theta, and delta frequencies, without evidence of clear wakefulness. Three postarousal EEG patterns associated with slow-wave sleep (SWS) arousals were recently identified in adults with sleepwalking and sleep terrors. The goal of the present study was to evaluate the distribution of these postarousal EEG patterns in 10 somnambulistic patients (three males, seven females, mean age: 25.1, SD: 4.1) evaluated at baseline and following 38 h of sleep deprivation. A total of 44 behavioral arousals were recorded in the laboratory; seven episodes at baseline (five from SWS, two from stage 2 sleep) and 37 episodes during recovery sleep (30 from SWS, seven from stage 2 sleep). There was no significant difference in the distribution of postarousal EEG patterns identified during baseline and recovery sleep. One pattern, comprised of diffuse rhythmic and synchronous delta activity, was preferentially associated with relatively simple behavioral episodes but did not occur during episodes from stage 2 sleep. Overall, delta activity was detected in 48% of the behavioral episodes from SWS and in 22% of those from stage 2. There was no evidence of complete awakening during any of the episodes. The results support the view of somnambulism as a disorder of arousal and suggest that sleepwalkers' atypical arousal reactions can manifest themselves in stage 2 sleep in addition to SWS.

Authors+Show Affiliations

Centre d'étude du sommeil, Hôpital du Sacré-Coeur, Montréal, Québec, Canada. zadraa@psy.umontreal.caNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15339264

Citation

Zadra, Antonio, et al. "Analysis of Postarousal EEG Activity During Somnambulistic Episodes." Journal of Sleep Research, vol. 13, no. 3, 2004, pp. 279-84.
Zadra A, Pilon M, Joncas S, et al. Analysis of postarousal EEG activity during somnambulistic episodes. J Sleep Res. 2004;13(3):279-84.
Zadra, A., Pilon, M., Joncas, S., Rompré, S., & Montplaisir, J. (2004). Analysis of postarousal EEG activity during somnambulistic episodes. Journal of Sleep Research, 13(3), 279-84.
Zadra A, et al. Analysis of Postarousal EEG Activity During Somnambulistic Episodes. J Sleep Res. 2004;13(3):279-84. PubMed PMID: 15339264.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Analysis of postarousal EEG activity during somnambulistic episodes. AU - Zadra,Antonio, AU - Pilon,Mathieu, AU - Joncas,Steve, AU - Rompré,Sylvie, AU - Montplaisir,Jacques, PY - 2004/9/2/pubmed PY - 2005/1/12/medline PY - 2004/9/2/entrez SP - 279 EP - 84 JF - Journal of sleep research JO - J Sleep Res VL - 13 IS - 3 N2 - Early studies found that electroencephalographic (EEG) recordings during somnambulistic episodes were characterized by a combination of alpha, theta, and delta frequencies, without evidence of clear wakefulness. Three postarousal EEG patterns associated with slow-wave sleep (SWS) arousals were recently identified in adults with sleepwalking and sleep terrors. The goal of the present study was to evaluate the distribution of these postarousal EEG patterns in 10 somnambulistic patients (three males, seven females, mean age: 25.1, SD: 4.1) evaluated at baseline and following 38 h of sleep deprivation. A total of 44 behavioral arousals were recorded in the laboratory; seven episodes at baseline (five from SWS, two from stage 2 sleep) and 37 episodes during recovery sleep (30 from SWS, seven from stage 2 sleep). There was no significant difference in the distribution of postarousal EEG patterns identified during baseline and recovery sleep. One pattern, comprised of diffuse rhythmic and synchronous delta activity, was preferentially associated with relatively simple behavioral episodes but did not occur during episodes from stage 2 sleep. Overall, delta activity was detected in 48% of the behavioral episodes from SWS and in 22% of those from stage 2. There was no evidence of complete awakening during any of the episodes. The results support the view of somnambulism as a disorder of arousal and suggest that sleepwalkers' atypical arousal reactions can manifest themselves in stage 2 sleep in addition to SWS. SN - 0962-1105 UR - https://www.unboundmedicine.com/medline/citation/15339264/Analysis_of_postarousal_EEG_activity_during_somnambulistic_episodes_ L2 - https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0962-1105&date=2004&volume=13&issue=3&spage=279 DB - PRIME DP - Unbound Medicine ER -