Differential effects of the muscarinic M1 receptor agonist RS-86 and the acetylcholine-esterase inhibitor donepezil on REM sleep regulation in healthy volunteers. - Nissen,C.; Nofzinger,EA.; Feige,B.; Waldheim,B.; Radosa,MP.; Riemann,D.; Berger,M. (Neuropsychopharmacology, 2006)