Maude Bouchard

TL;DR: It is suggested that microstructural degradation of specific cortical regions compromise SW generation and propagation in older subjects, critically contributing to age-related changes in SW oscillations.

TL;DR: Higher spindle density predicted better performance on verbal learning, visual attention and verbal fluency, whereas spindle frequency and slow wave density or slope predicted fewer cognitive performance variables.

TL;DR: Caffeine induced dose-dependent increases in relative stage 1 sleep and reductions in absolute and relative slow wave sleep and absolute rapid eye movement sleep in both age groups, and middle-aged adults are generally more sensitive to the effects of a high dose of caffeine on sleep quantity and quality.

TL;DR: The results indicate that WM underlying the thalamo-cortico-thalamic loop predicts SS characteristics in young individuals, but does not explain age-related changes in SS, suggesting other neurophysiological factors could better explain the effect of age on SS characteristics.

TL;DR: It is suggested that the interaction between homeostatic and circadian pressure modulates spindle frequency differently in aging, and spindle characteristics do not seem to be linked with the ability to maintain daytime recovery sleep.