title: Drugs affecting dopamine neurons and yawning behavior.
abstract: Drugs stimulating the dopamine (DA) neurons in different ways (apomorphine, piribedil, amphetamine, nomifensine, L-DOPA) given in low doses (not producing behavioral excitation) induced yawning in rats. Blockade of DA receptors with neuroleptics counteracted DA-agonists induced yawning which may indicate a dopaminergic component of this behavior.
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000494:pharmacology; D000818:Animals; D001058:Apomorphine / Q000494:pharmacology; D001522:Behavior, Animal / Q000187:drug effects*; D004298:Dopamine / Q000494:pharmacology / Q000502:physiology*; D006801:Humans; D008297:Male; D009474:Neurons / Q000187:drug effects*; D051381:Rats; D012110:Reserpine / Q000494:pharmacology; D013239:Stereotyped Behavior / Q000187:drug effects; D013997:Time Factors
chemical_list: D012110:Reserpine; D000324:Adrenocorticotropic Hormone; D001058:Apomorphine; D004298:Dopamine