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Auditory processing up to cortex is maintained during sleep spindles

Author(s): Jourde HR; Coffey EBJ;

Sleep spindles are transient 11-16 Hz brain oscillations generated by thalamocortical circuits. Their role in memory consolidation is well established, but how they play a role in sleep continuity and protection of memory consolidation against interference is unclear. One theory posits that spindles or a neural refractory period following their offset act ...

Article GUID: 39588317


Effects of early midlife ovarian removal on sleep: Polysomnography-measured cortical arousal, homeostatic drive, and spindle characteristics

Author(s): Brown A; Gervais NJ; Gravelsins L; O' Byrne J; Calvo N; Ramana S; Shao Z; Bernardini M; Jacobson M; Rajah MN; Einstein G;

Bilateral salpingo-oophorectomy (BSO; removal of ovaries and fallopian tubes) prior to age 48 is associated with elevated risk for both Alzheimer's disease (AD) and sleep disorders such as insomnia and sleep apnea. In early midlife, individuals with BSO show reduced hippocampal volume, functi ...

Article GUID: 39178647


Sleep spindles predict stress-related increases in sleep disturbances

Author(s): Dang-Vu TT; Salimi A; Boucetta S; Wenzel K; O' Byrne J; Brandewinder M; Berthomier C; Gouin JP;

Background and aim: Predisposing factors place certain individuals at higher risk for insomnia, especially in the presence of precipitating conditions such as stressful life events. Sleep spindles have been shown to play an important role in the preservation of sleep continuity. Lower spindle den ...

Article GUID: 25713529


The neurophysiology of closed-loop auditory stimulation in sleep: A magnetoencephalography study

Author(s): Jourde HR; Merlo R; Brooks M; Rowe M; Coffey EBJ;

Closed-loop auditory stimulation (CLAS) is a brain modulation technique in which sounds are timed to enhance or disrupt endogenous neurophysiological events. CLAS of slow oscillation up-states in sleep is becoming a popular tool to study and enhance sleep's functions, as it increases slow oscillations, evokes sleep spindles and enhances memory consoli ...

Article GUID: 37675803


Sigma oscillations protect or reinstate motor memory depending on their temporal coordination with slow waves

Author(s): Nicolas J; King BR; Levesque D; Lazzouni L; Coffey EBJ; Swinnen S; Doyon J; Carrier J; Albouy G;

Targeted memory reactivation (TMR) during post-learning sleep is known to enhance motor memory consolidation but the underlying neurophysiological processes remain unclear. Here, we confirm the beneficial effect of auditory TMR on motor performance. At the neural level, TMR enhanced slow wave (SW ...

Article GUID: 35726850


Different Patterns of Sleep-Dependent Procedural Memory Consolidation in Vipassana Meditation Practitioners and Non-meditating Controls.

Author(s): Solomonova E, Dubé S, Blanchette-Carrière C, Sandra DA, Samson-Richer A, Carr M, Paquette T, Nielsen T

Front Psychol. 2019;10:3014 Authors: Solomonova E, Dubé S, Blanchette-Carrière C, Sandra DA, Samson-Richer A, Carr M, Paquette T, Nielsen T

Article GUID: 32038390


Sleep spindles may predict response to cognitive-behavioral therapy for chronic insomnia

Author(s): Dang-Vu TT; Hatch B; Salimi A; Mograss M; Boucetta S; O' Byrne J; Brandewinder M; Berthomier C; Gouin JP;

Background: While cognitive-behavioral therapy for insomnia constitutes the first-line treatment for chronic insomnia, only few reports have investigated how sleep architecture relates to response to this treatment. In this pilot study, we aimed to determine whether pre-treatment sleep spindle de ...

Article GUID: 29157588


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