Age-Related Reduction in Daytime Sleep Propensity and Nocturnal Slow Wave Sleep

To investigate whether age-related and experimental reductions in SWS and sleep continuity are associated with increased daytime sleep propensity.Assessment of daytime sleep propensity under baseline conditions and following experimental disruption of SWS. Healthy young (20-30 y, n = 44), middle-aged (40-55 y, n = 35) and older (66-83 y, n = 31) men and women, completed a 2-way parallel group study. After an 8-h baseline sleep episode, subjects...