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High-density EEG power topography and connectivity during confusional arousal.
Cortex
October 2022
Sleep Medicine Unit, Neurocenter of Southern Switzerland, Ospedale Civico, Lugano, Switzerland; Faculty of Biomedical Sciences, University of Southern Switzerland, Lugano, Switzerland; Department of Neurology, University Hospital, Inselspital, Bern, Switzerland.
Confusional arousal is the milder expression of a family of disorders known as Disorders of Arousal (DOA) from non-REM sleep. These disorders are characterized by recurrent abnormal behaviors that occur in a state of reduced awareness for the external environment. Despite frequent amnesia for the nocturnal events, when actively probed, patients are able to report vivid hallucinatory/dream-like mental imagery.
View Article and Find Full Text PDFElectroencephalogram abnormalities in patients with NREM parasomnias.
Sleep Med
January 2021
Department of Pediatric Neurology, Erciyes University, Kayseri, Turkey.
Objective: Electroencephalographic (EEG) changes in patients with NREM parasomnias (NRP) occur in sleep architecture as changes in slow wave sleep or cyclic pattern, which are not considered abnormal. However, abnormalities in EEG in these patients have recently been reported, indicating that EEG patterns in NRPs are not definitive. Moreover, most of the polysomnography (PSG) findings in NRP patients were reported in the adult population requiring data from pediatric population to avoid bias in conclusion.
View Article and Find Full Text PDFDiagnostic criteria for disorders of arousal: A video-polysomnographic assessment.
Ann Neurol
February 2018
Sleep Disorders Unit, National Reference Center for Narcolepsy and Hypersomnia, Neurology Department, Gui de Chauliac Hospital, Montpellier, France.
Objective: To assess video-polysomnographic (vPSG) criteria and their cutoff values for the diagnosis of disorders of arousal (DOAs; sleepwalking, sleep terror).
Methods: One hundred sixty adult patients with DOAs and 50 sex- and age-matched healthy participants underwent a clinical evaluation and vPSG assessment to quantify slow wave sleep (SWS) interruptions (SWS fragmentation index, slow/mixed and fast arousal ratios, and indexes per hour) and the associated behaviors. First, a case-control analysis was performed in 100 patients and the 50 controls to define the optimal cutoff values using receiver operating characteristic curves.
Electroencephalographic slow waves prior to sleepwalking episodes.
Sleep Med
December 2014
Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur, Montréal, Québec, Canada; Department of Psychology, Université de Montréal, Montréal, Québec, Canada. Electronic address:
Objective: Recent studies have suggested that the onset of sleepwalking episodes may be preceded by fluctuations in slow-wave sleep electroencephalographic characteristics. However, whether or not such fluctuations are specific to sleepwalking episodes or generalized to all sleep-wake transitions in sleepwalkers remains unknown. The goal of this study was to compare spectral power for delta (1-4 Hz) and slow delta (0.
View Article and Find Full Text PDFSleepwalking, a disorder of NREM sleep instability.
Sleep Med
March 2006
Stanford University Sleep Disorders Clinic, 401 Quarry Road, Suite 3301, Stanford, CA 94305, USA.
Background And Purpose: Thirty-two chronic sleepwalkers who were part of a larger, previously reported sleepwalking group all achieved control of sleepwalking after undergoing treatment for an associated sleep disorder. In the current study, all records were blindly scored to perform a cyclic alternating pattern (CAP) analysis.
Patients And Methods: Thirty-two young adult chronic sleepwalkers had polysomnography (PSG) on initial nights without sleepwalking events, as did age-matched normal controls and patients with mild sleep-disordered breathing (SDB).
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