Author

G. Chételat

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Open access Oct 2026

Effects of an 18-month meditation training on subjective and objective sleep quality in older adults: a secondary analysis of the Age-Well randomized controlled trial

Study objectives: Aging is associated with increased sleep complaints and changes in sleep architecture, microstructure and rest-activity rhythms. Meditation-based interventions have shown benefits on subjective sleep quality, but their effects on objective sleep parameters remain largely underexplored. This study inve...

P. Champetier, A. Hamel, S. Réhel et al. · medRxiv · 0 citations

Open access Jul 2026

Amyloid PET Quantitation and Centiloid Thresholds in the Diagnosis of Alzheimer Disease: An Individual Participant Data Meta-Analysis.

A double-cutoff analysis suggest that scans in the 11 to 26 Centiloid range should be interpreted with caution depending on the context of use, and positivity cutoffs converged around 18 Centiloids (data-driven) and 27 Centiloids (visual reads).

G. Blazhenets, D. Soleimani-Meigooni, Konstantinos Chiotis et al. · Journal of the American Medi... · 5 citations