1 PERFORM Centre and Center for Studies in Behavioural Neurobiology, Department of Psychology and Department of Health, Kinesiology, and Applied Physiology, Concordia University, Montréal, Quebec, Canada.
2 Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, CIUSSS Centre-Sud-de-l'île-de-Montréal, Montréal, Quebec, Canada.
3 Department of Psychology, Université de Montréal, Montréal, Quebec, Canada.
4 Department of Neurosciences, Université de Montréal, Montréal, Quebec, Canada.

Cross-frequency coupling (CFC) between brain oscillations during non-rapid-eye-movement (NREM) sleep (e.g. slow oscillations [SO] and spindles) may be a neural mechanism of overnight memory consolidation. Declines in CFC across the lifespan might accompany coinciding memory problems with ageing. However, there are few reports of CFC changes during sleep after learning in older adults, controlling for baseline effects. Our objective was to examine NREM CFC in healthy older adults, with an...