Only a few studies focused on NREM sleep EEG features in RBD (Ferini-Strambi et al., 2019). However, recent findings underlined the importance of NREM sleep in protecting aging brain from degeneration and cognitive decline (Cordone et al., 2019), with a specific focus on slow wave sleep (SWS) in counteracting accumulation of beta-amyloid (Xie et al., 2013).
