Müller, W E Restoration of age-related receptor deficits in the central nervous system, a common mechanism of nootropic action? [electronic resource] - Methods and findings in experimental and clinical pharmacology Dec 1988 - 773-83 p. digital Publication Type: Journal Article; Review ISSN: 0379-0355 Subjects--Topical Terms: Aging--physiologyAnimalsCentral Nervous System--drug effectsHumansParasympathetic Nervous System--drug effectsReceptors, Drug--drug effects