Gannon, Robert L LY2033298, a positive allosteric modulator at muscarinic M₄ receptors, enhances inhibition by oxotremorine of light-induced phase shifts in hamster circadian activity rhythms. [electronic resource] - Psychopharmacology Nov 2012 - 231-40 p. digital Publication Type: Journal Article ISSN: 1432-2072 Standard No.: 10.1007/s00213-012-2743-8 doi Subjects--Topical Terms: AnimalsCircadian Rhythm--drug effectsCricetinaeDose-Response Relationship, DrugLightMaleMotor Activity--drug effectsMuscarinic Agonists--administration & dosageMuscarinic Antagonists--administration & dosageNicotinic Acids--administration & dosageOxotremorine--administration & dosageReceptor, Muscarinic M4--agonistsScopolamine--administration & dosageThiophenes--administration & dosage