Gilles Vandewalle

The paper compares brain activity during self-caught and probe-caught mind blanking events using fMRI, finding behavioral convergence but neural divergence in the dorsal anterior cingulate cortex.

COFITAGE provides a longitudinal neuroimaging dataset for studying brain aging, integrating MRI, PET, genetics, and cognitive assessments across 50-70 year olds.

This study shows light modulates locus coeruleus (LC) activity in an emotion-dependent manner, with higher illuminance dampening responses to negative stimuli and enhancing neutral ones.

This study examines how light affects hypothalamic activity in adolescents and young adults across different times of day, finding stable regional responses with developmental differences in magnitude.

This study evaluates how protocol and hardware differences affect pooling quantitative MRI data across sites in healthy aging studies, finding both benefits and drawbacks for analysis outcomes.

The paper examines how polygenic risk for Parkinson's disease relates to REM sleep metrics in young and late-midlife individuals, finding age-dependent associations.

This study investigates how seasonal changes, mood, and light exposure affect regional activity in the human amygdala using fMRI.

The paper examines diurnal changes in brain network dynamics and their association with cognitive aging and Alzheimer's disease markers.

This study examines how blue light affects cortical excitability in adolescents and young adults, finding age-related differences in response.

This study links specific sleep arousal subtypes to polygenic risk for Alzheimer's disease and cognitive decline in late middle-aged individuals.

This study examines the relationship between effective connectivity between the locus coeruleus and hypothalamus subregions and sleep electrophysiology in young and older adults.

This study identifies group-specific brain activity patterns related to fatigue in early Multiple Sclerosis patients and healthy controls using fMRI.

This study examines how napping affects functional brain responses in older adults during a working memory task, finding differences in brain activity and performance between nappers and non-nappers.

This study shows that light affects thalamo-cortical connectivity during a cognitive task, with differences based on time of day and age group.

The paper investigates the relationship between locus coeruleus (LC) activity during wakefulness and REM sleep quality in humans, finding task-dependent associations.

This study investigates how varying light levels affect different regions of the human hypothalamus during cognitive tasks, finding distinct activity patterns linked to task performance.

The paper examines daily fluctuations of theta and gamma EEG rhythms in healthy aging and links them to cognitive performance and biomarkers of neurodegeneration.

The paper uses 7 Tesla MRS and TMS-hdEEG to show that MRS-GABA correlates with physiological measures of tonic inhibition in the human motor cortex.

The paper develops a consensus checklist and guidelines for reporting non-visual light effects in human studies, resulting in a 25-item checklist after expert feedback.

This study examines how different light levels affect task-evoked pupil responses during cognitive tasks, finding that higher light levels increase pupil dilation in response to auditory stimuli.

This study examines the relationship between napping and circadian regulation of sleep in older adults, finding altered melatonin secretion and sleep patterns in nappers.

The paper investigates how repeated short light exposures affect sustained pupil responses during different cognitive tasks, finding that higher melanopic irradiance increases pupil responses and that task context influences variability.

This study shows blue-enriched light enhances thalamo-cortical connectivity during an auditory attention task, supporting its role in modulating cognitive activity.

The paper investigates the association between brainstem myelin content and sleep parameters in healthy young men, finding significant links between myelin integrity and sleep quality metrics.

This study finds that higher locus coeruleus activity during wakefulness in older adults is linked to worse sleep quality and reduced theta band power during REM sleep.

The paper investigates the relationship between structural and functional characteristics of the locus coeruleus in young and late middle-aged individuals using MRI and finds no association between LC contrast and functional response.

The paper examines the link between spindle-slow wave coupling during sleep and early amyloid-β burden, finding it associated with memory decline in midlife individuals.

The paper investigates the role of melanopsin retinal ganglion cells (mRGCs) in visual and cognitive brain responses in LHON patients using fMRI under different light conditions.

The paper compares visual and automatic sleep scoring methods to assess their reliability and variability in large datasets, finding that automatic scoring can be a reliable reference when reproducible.

The paper shows that preserved cortical excitability during wakefulness is linked to better cognitive performance in older adults, independent of brain structural changes.