• Are age and sex effects on sleep slow waves only a matter of EEG amplitude ? 

    Rosinvil, Thaïna; Bouvier, Justin; Dubé, Jonathan; Lafrenière, Alexandre; Bouchard, Maude; Cyr-Cronier, Jessica; Nadia, Gosselin; Carrier, Julie; Lina, Jean-Marc (Oxford University Press, 2020-09-15)
    Aging is associated with reduced slow wave (SW) density (number SW/min in nonrapid-eye movement sleep) and amplitude. It has been proposed that an age-related decrease in SW density may be due to a reduction in electroencephalogram (EEG) amplitude ...
  • EEG connectivity across sleep cycles and age 

    Bouchard, Maude; Lina, Jean-Marc; Gaudreault, Pierre-Olivier; Dubé, Jonathan; Gosselin, Nadia; Carrier, Julie (American academy of sleep medicine, 2019-11-06)
    Study Objectives In young adults, sleep is associated with important changes in cerebral connectivity during the first cycle of non-rapid eye movement (NREM) sleep. Our study aimed to evaluate how electroencephalography (EEG) connectivity during sleep ...
  • Electrophysiological impact of multiple concussions in asymptomatic athletes: a re-analysis based on alpha activity during a visual-spatial attention task 

    Guay, Samuel; De Beaumont, Louis; Drisdelle, Brandi Lee; Lina, Jean-Marc; Jolicoeur, Pierre (2017-11-22)
    Most EEG studies used event-related potentials to assess long-term and cumulative effects of sport-related concussions on brain activity. Time-frequency methods provide another approach that allows the detection of subtle shifts in types and patterns ...
  • Sleep slow waves’ negative-to-positive-phase transition : a marker of cognitive and apneic status in aging 

    Lafrenière, Alexandre; Lina, Jean-Marc; Hernandez, Jimmy; Bouchard, Maude; Gosselin, Nadia; Carrier, Julie (Oxford University Press, 2022-10-11)
    The sleep slow-wave (SW) transition between negative and positive phases is thought to mirror synaptic strength and likely depends on brain health. This transition shows signifcant age-related changes but has not been investigated in pathological ...
  • Sleep spindles are resilient to extensive white matter deterioration 

    Sanchez, Erlan; Arbour, Caroline; El-Khatib, Héjar; Marcotte, Karine; Blais, Hélène; Baril, Andrée-Ann; Bedetti, Christophe; Descoteaux, Maxime; Lina, Jean-Marc; Gilbert, Danielle; Carrier, Julie; Gosselin, Nadia (Oxford University Press, 2020-06-13)
    Sleep spindles are an essential part of non-rapid eye movement sleep, notably involved in sleep consolidation, cognition, learning and memory. These oscillatory waves depend on an interaction loop between the thalamus and the cortex, which relies on ...
  • Waking EEG functional connectivity in middle-aged and older adults with obstructive sleep apnea 

    Fortin, Maxime; Lina, Jean-Marc; Desjardins, Marie-Eve; Gagnon, Katia; Baril, Andrée-Ann; Carrière, Julien; Gosselin, Nadia (Elsevier, 2020-06-14)
    Objectives: The present study aimed at investigating changes in waking electroencephalography (EEG), most specifically regarding spectral power and functional connectivity, in middle-aged and older adults with OSA. We also explored whether changes ...