References of "Vandewalle, Gilles"
     in
Bookmark and Share    
Peer Reviewed
See detailAge-related differences in the dynamics of cortical excitability and cognitive inhibition during prolongedwakefulness
Gaggioni, Giulia ULg; Chelllappa, S.; Ly, J. et al

Conference (2016, September)

Detailed reference viewed: 25 (11 ULg)
Full Text
Peer Reviewed
See detailCircadian dynamics in measures of cortical excitation and inhibition balance
Chellappa, Sarah; Gaggioni, Giulia ULg; LY, Julien ULg et al

in Scientific Reports (2016), 6:33661

Detailed reference viewed: 20 (8 ULg)
Peer Reviewed
See detailSeasonal variation in human brain function
Vandewalle, Gilles ULg

Conference (2016, August 25)

Detailed reference viewed: 8 (1 ULg)
Full Text
Peer Reviewed
See detailLocal modulation of human brain responses by circadian rhythmicity and sleep debt
Muto, Vincenzo ULg; Jaspar, Mathieu ULg; Meyer, Christelle et al

in Science (2016), 351(6300),

Detailed reference viewed: 40 (7 ULg)
Peer Reviewed
See detailSleep deprivation affects brain global cortical responsivenes
Gaggioni, Giulia ULg; Chellappa, S; Ly, J et al

Conference (2016, June 15)

Detailed reference viewed: 29 (5 ULg)
Peer Reviewed
See detailSeasonal variation in human COGNITIVE brain responses
Meyer, Christelle; Muto, Vincenzo ULg; Jaspar, Mathieu ULg et al

Poster (2016, June)

Detailed reference viewed: 15 (3 ULg)
See detailSommeil & vieillisement …et maladie d’Alzheimer?
Vandewalle, Gilles ULg

Conference given outside the academic context (2016)

Detailed reference viewed: 14 (1 ULg)
See detailEffet de la lumière sur les fonctions cognitives non-visuelles
Vandewalle, Gilles ULg

Scientific conference (2016, March 24)

Detailed reference viewed: 23 (2 ULg)
See detailDaily and yearly variations in neuronal function and their relationships with cognition and behavior
Vandewalle, Gilles ULg

Scientific conference (2016, February 11)

Detailed reference viewed: 26 (2 ULg)
Full Text
Peer Reviewed
See detailSeasonality in human cognitive brain responses
Meyer, Christelle ULg; Muto, Vincenzo ULg; Jaspar, Mathieu ULg et al

in Proceedings of the National Academy of Sciences of the United States of America (2016)

Detailed reference viewed: 121 (15 ULg)
Full Text
Peer Reviewed
See detailAutomatic artifacts and arousals detection in whole-night sleep EEG recordings
Coppieters't Wallant, Dorothe ULg; Muto, Vincenzo ULg; Gaggioni, Giulia ULg et al

in Journal of Neuroscience Methods (2016), 258

In sleep electroencephalographic (EEG) signals, artifacts and arousals marking are usually part of the processing. This visual inspection by a human expert has two main drawbacks: it is very time ... [more ▼]

In sleep electroencephalographic (EEG) signals, artifacts and arousals marking are usually part of the processing. This visual inspection by a human expert has two main drawbacks: it is very time consuming and subjective. To detect artifacts and arousals in a reliable, systematic and reproducible automatic way, we developed an automatic detection based on time and frequency analysis with adapted thresholds derived from data themselves. The automatic detection performance is assessed using 5 statistic parameters, on 60 whole night sleep recordings coming from 35 healthy volunteers (male and female) aged between 19 and 26. The proposed approach proves its robustness against inter- and intra-, subjects and raters’ scorings, variability. The agreement with human raters is rated overall from substantial to excellent and provides a significantly more reliable method than between human raters. Existing methods detect only specific artifacts or only arousals, and/or these methods are validated on short episodes of sleep recordings, making it difficult to compare with our whole night results. The method works on a whole night recording and is fully automatic, reproducible, and reliable. Furthermore the implementation of the method will be made available online as open source code. [less ▲]

Detailed reference viewed: 64 (23 ULg)
Full Text
Peer Reviewed
See detailPupil size dynamics during prolonged wakefulness reflects the dual interaction of sleep-homeostasis and the circadian timing system and is related to cortical excitability
Van Egroo, Maxime ULg; Cespedes-Ortiz, Cristian ULg; Ly, Julien et al

Poster (2016)

Objective. We sought to characterize daily variations in pupil size as a function of sleep need and circadian phase. We also assessed second-to-second pupil size variability during prolonged wakefulness ... [more ▼]

Objective. We sought to characterize daily variations in pupil size as a function of sleep need and circadian phase. We also assessed second-to-second pupil size variability during prolonged wakefulness. Methods. Twenty-two healthy young men (22 y.o. ± 2.6) followed a 29h sleep deprivation protocol under constant routine conditions. On twelve occasions, pupil size was recorded (90 Hz sampling rate) while fixating a dot and suppressing eye blinks. Following automatic eye blink and artefact rejection, mean pupil size and average point to point variation in pupil size data were computed. Data were realigned according to individual dim-light melatonin onset determined based on hourly saliva samples. Results. Preliminary analyses indicate that both mean pupil size and pupil size variability show a main effect of circadian phase (PROC MIXED; n = 20; F11,206 > 4.4, p < 0.001). Post hoc analyses show that mean pupil size and pupil size variability increase up to the evening wake maintenance prior to decreasing until the early morning around the putative sleep promoting zone. Conclusion. These data confirm the pupil size and pupil size variability reflect the dual interaction of sleep homeostasis and the circadian timing system. Further analyses will determine how pupil size dynamics relates to makers of brain function. [less ▲]

Detailed reference viewed: 20 (3 ULg)
Full Text
Peer Reviewed
See detailCircadian and homeostatic sleep pressure modulate fMRI correlates of vigilant attention
Muto, Vincenzo ULg; Jaspar, Mathieu ULg; Meyer, C et al

in Journal of Sleep Research (2016), 25(s1),

Detailed reference viewed: 29 (4 ULg)
Full Text
Peer Reviewed
See detailCircadian regulation of human cortical excitability
LY, Julien ULg; Gaggioni, Giulia ULg; Chellappa, Sarah et al

in Nature Communications (2016)

Detailed reference viewed: 39 (4 ULg)
Peer Reviewed
See detailSleep deprivation affects brain global cortical responsiveness
Gaggioni, Giulia ULg; Chellappa; Ly et al

Poster (2016)

Detailed reference viewed: 37 (2 ULg)