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Brain perfusion during rapid-eye-movement sleep successfully identifies amnestic mild cognitive impairment.

Author(s): Brayet P, Petit D, Baril AA, Gosselin N, Gagnon JF, Soucy JP, Gauthier S, Kergoat MJ, Carrier J, Rouleau I, Montplaisir J

Sleep Med. 2017 Jun;34:134-140 Authors: Brayet P, Petit D, Baril AA, Gosselin N, Gagnon JF, Soucy JP, Gauthier S, Kergoat MJ, Carrier J, Rouleau I, Montplaisir J

Article GUID: 28522082
Altered brain perfusion patterns in wakefulness and slow-wave sleep in sleepwalkers.

Author(s): Desjardins MÈ, Baril AA, Soucy JP, Dang-Vu TT, Desautels A, Petit D, Montplaisir J, Zadra A

Sleep. 2018 05 01;41(5): Authors: Desjardins MÈ, Baril AA, Soucy JP, Dang-Vu TT, Desautels A, Petit D, Montplaisir J, Zadra A

Article GUID: 29514303
Title:Altered brain perfusion patterns in wakefulness and slow-wave sleep in sleepwalkers.
Authors:Desjardins MÈ,  Baril AA,  Soucy JP,  Dang-Vu TT,  Desautels A,  Petit D,  Montplaisir J,  Zadra A
Link:https://www.ncbi.nlm.nih.gov/pubmed/29514303?dopt=Abstract
DOI:10.1093/sleep/zsy039
Category:Sleep
PMID:29514303
Dept Affiliation: PERFORM
1 Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur de Montréal, Montreal, Canada.
2 Department of Psychology, Université de Montréal, Montreal, Canada.
3 Faculty of Medicine, Université de Montréal, Montreal, Canada.
4 PERFORM Centre, Concordia University, Montreal, Canada.
5 McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Canada.
6 Center for Studies in Behavioral Neurobiology, Concordia University, Montreal, Canada.
7 Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal and Department of Neurosciences, Université de Montréal, Montreal, Canada.

Description:

Altered brain perfusion patterns in wakefulness and slow-wave sleep in sleepwalkers.

Sleep. 2018 05 01;41(5):

Authors: Desjardins MÈ, Baril AA, Soucy JP, Dang-Vu TT, Desautels A, Petit D, Montplaisir J, Zadra A

Abstract

Study Objectives: The present study assessed brain perfusion patterns with single-photon emission computed tomography (SPECT) during sleepwalkers' post-sleep deprivation slow-wave sleep (SWS) and resting-state wakefulness.

Methods: Following a 24 hr period of sleep deprivation, 10 sleepwalkers and 10 sex- and age-matched controls were scanned with a high-resolution SPECT scanner. Participants were injected with 99mTc-ethylene cysteinate dimer after 2 min of stable SWS within their first sleep cycle as well as during resting-state wakefulness, both after a subsequent 24 hr period of sleep deprivation.

Results: When compared with controls' brain perfusion patterns during both SWS and resting-state wakefulness, sleepwalkers showed reduced regional cerebral perfusion in several bilateral frontal regions, including the superior frontal, middle frontal, and medial frontal gyri. Moreover, reduced regional cerebral perfusion was also found in sleepwalkers' left postcentral gyrus, insula, and superior temporal gyrus during SWS compared with controls. During resting-state wakefulness compared with controls, reduced cerebral perfusion was also found in parietal and temporal regions of sleepwalkers' left hemisphere, whereas the right parahippocampal gyrus showed increased regional cerebral perfusion.

Conclusions: Our results reveal patterns of reduced regional cerebral perfusion in sleepwalkers' frontal and parietal areas when compared with controls, regions previously associated with SWS generation and episode occurrence. Additionally, reduced perfusion in the dorsolateral prefrontal cortex and insula during recovery SWS is consistent with the clinical features of somnambulistic episodes, including impaired awareness and reduced pain perception. Altered regional cerebral perfusion patterns during sleepwalkers' resting-state wakefulness may be related to daytime functional anomalies in this population.

PMID: 29514303 [PubMed - indexed for MEDLINE]