Intra-periaqueductal Grey Matter Injection of Orexin A Attenuates Nitroglycerin-induced Deficits in Learning and Memory in Male Rats Journal title: Iranian Journal of Veterinary Science and Technology (IJVST) Authors: Razieh Kooshki,Mehdi Abbasnejad,Baharosadat Majdzadeh, Subject(s): Veterinary Science