Frontal forebrain lesions: effects on the foraging and apomorphine pecking of pigeons.
The role of the nucleus basalis prosencephali (Bas), a frontal forebrain structure peculiar to birds, in the control of forage pecking and apomorphine-induced pecking was investigated. In a quasi-natural grit-grain selection task bilateral coagulations of the Bas and the associated neostratum frontolaterale (Nfl) caused a marked fall in grain per peck uptake and a simultaneous increase in grit per peck uptake. Bas lesions also had a reducing effect on the compulsive pecking elicited by systemic injections of apomorphine. This confirms that the Bas is involved in the control of forage pecking and dopaminergic pecking of birds.
Wynne
B
B
Department of Physiology, University of Western Australia, Nedlands.
Delius
J D
JD
D000818:Animals; D001058:Apomorphine / Q000494:pharmacology*; D001479:Basal Ganglia / Q000033:anatomy & histology / Q000502:physiology; D010856:Columbidae; D018491:Dopamine Agonists / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004435:Eating / Q000187:drug effects / Q000502:physiology*; D017072:Neostriatum / Q000033:anatomy & histology / Q000502:physiology; D016548:Prosencephalon / Q000033:anatomy & histology / Q000502:physiology*
D018491:Dopamine Agonists; D001058:Apomorphine