Keyword search (3,448 papers available)


Subtle long-term cognitive effects of a single mild traumatic brain injury and the impact of a three-month aerobic exercise intervention.

Author(s): Larson-Dupuis C, Léveillé E, Desjardins M, Jodoin M, Bourassa MÈ, Bergeron H, Beaulieu C, Carrier J, Pepin V, De Beaumont L...

BACKGROUND: Although there is a growing body of literature on the impact of multiple concussions on cognitive function with aging, less is known about the long-term impact of sustaining a single mi...

Article GUID: 32878422
Effects of menopause on sleep quality and sleep disorders: Canadian Longitudinal Study on Aging.

Author(s): Zolfaghari S, Yao C, Thompson C, Gosselin N, Desautels A, Dang-Vu TT, Postuma RB, Carrier J

Menopause. 2019 Dec 13;: Authors: Zolfaghari S, Yao C, Thompson C, Gosselin N, Desautels A, Dang-Vu TT, Postuma RB, Carrier J

Article GUID: 31851117
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
Re-stepping into the same river: competition problem rather than a reconsolidation failure in an established motor skill.

Author(s): Gabitov E, Boutin A, Pinsard B, Censor N, Fogel SM, Albouy G, King BR, Benali H, Carrier J, Cohen LG, Karni A, Doyon J

Sci Rep. 2017 08 24;7(1):9406 Authors: Gabitov E, Boutin A, Pinsard B, Censor N, Fogel SM, Albouy G, King BR, Benali H, Carrier J, Cohen LG, Karni A, Doyon J

Article GUID: 28839217
Beyond spindles: interactions between sleep spindles and boundary frequencies during cued reactivation of motor memory representations.

Author(s): Laventure S, Pinsard B, Lungu O, Carrier J, Fogel S, Benali H, Lina JM, Boutin A, Doyon J

Sleep. 2018 Sep 01;41(9): Authors: Laventure S, Pinsard B, Lungu O, Carrier J, Fogel S, Benali H, Lina JM, Boutin A, Doyon J

Article GUID: 30137521
Title:Beyond spindles: interactions between sleep spindles and boundary frequencies during cued reactivation of motor memory representations.
Authors:Laventure S,  Pinsard B,  Lungu O,  Carrier J,  Fogel S,  Benali H,  Lina JM,  Boutin A,  Doyon J
Link:https://www.ncbi.nlm.nih.gov/pubmed/30137521?dopt=Abstract
DOI:10.1093/sleep/zsy142
Category:Sleep
PMID:30137521
Dept Affiliation: PERFORM
1 Department of Psychology, University of Montreal, Montreal, QC, Canada.
2 Functional Neuroimaging Unit, C.R.I.U.G.M., Montreal, QC, Canada.
3 McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, QC, Canada.
4 Sorbonne Universités, UPMC Univ Paris 06, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale (LIB), 75013 Paris, France.
5 Center for Advanced Research in Sleep Medicine, Montreal, QC, Canada.
6 School of Psychology, University of Ottawa, Ottawa, Ontario, Canada.
7 University of Ottawa Institute of Mental Health Research, University of Ottawa, Ottawa, Ontario, Canada.
8 University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada.
9 PERFORM Centre, Electrical and Computer Engineering Department, Concordia University, Montreal, Canada.
10 École de technologie supérieure, Department of Electrical Engineering, Montreal, Canada.

Description:

Beyond spindles: interactions between sleep spindles and boundary frequencies during cued reactivation of motor memory representations.

Sleep. 2018 Sep 01;41(9):

Authors: Laventure S, Pinsard B, Lungu O, Carrier J, Fogel S, Benali H, Lina JM, Boutin A, Doyon J

Abstract

There is now ample evidence that sleep spindles play a critical role in the consolidation of newly acquired motor sequences. Previous studies have also revealed that the interplay between different types of sleep oscillations (e.g. spindles, slow waves, sharp-wave ripples) promotes the consolidation process of declarative memories. Yet the functional contribution of this type of frequency-specific interactions to motor memory consolidation remains unknown. Thus, this study sought to investigate whether spindle oscillations are associated with low- or high-frequency activity at the regional (local) and interregional (connectivity) levels. Using an olfactory-targeted memory reactivation paradigm paired to a motor sequence learning task, we compared the effect of cuing (Cond) to no-cuing (NoCond) on frequency interactions during sleep spindles. Time-frequency decomposition analyses revealed that cuing induced significant differential and localized changes in delta (1-4 Hz) and theta (4-8 Hz) frequencies before, during, and after spindles, as well as changes in high-beta (20-30 Hz) during the spindle oscillation. Finally, coherence analyses yielded significant increases in connectivity during sleep spindles in both theta and sigma (11-17 Hz) bands in the cued group only. These results support the notion that the synchrony between spindle and associated low- or high-frequency rhythmic activity is an integral part of the memory reactivation process. Furthermore, they highlight the importance of not only measuring spindles' characteristics, but to investigate such oscillations in both time and frequency domains when assessing memory consolidation-related changes.

PMID: 30137521 [PubMed - in process]