REM sleep quality is associated with balanced tonic activity of the locus coeruleus during wakefulness. - Mortazavi N; Talwar P; Koshmanova E; Sharifpour R; Beckers E; Berger A; Campbell I; Paparella I; Balda F; Dardour Hamzaoui I; Berthomier C; Bastin C; et al. (Journal of biomedical science, 2025)