Effects of ectostriatal lesions, Wulst lesions and hemispherectomy upon visual discrimination of food in pigeons
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چکیده
منابع مشابه
The effects of wulst lesions on simple visual discrimination performance in the pigeon.
Pigeons with lesions involving the hyperstriatum accessorium, hyperstriatum intercalatus superior and hyperstriatum dorsale were compared with sham operated controls on acquisition of a simple colour/brightness discrimination. Correct and incorrect choices together with choice latencies were recorded. The lesioned birds' performance on the discrimination aspects of the task was not inferior to ...
متن کاملPresumed 'prefrontal cortex' lesions in pigeons: effects on visual discrimination performance.
The posterodorsolateral neostriatum (PDLNS) in pigeons may be an equivalent of the prefrontal cortex (PFC) in mammals. Here we report that lesions of this brain region in pigeons have a detrimental effect on various learned visual discriminations. Pigeons with lesions of the overlying area corticoidea dorsolateralis (CDL) served as controls. Both the postoperative re-learning to criterion of a ...
متن کاملDiscrepant effects of unilateral and bilateral forebrain lesions on the visual performance of pigeons.
The monocular and binocular performance of pigeons with bilateral, unilateral or sham lesions in the telencephalic Wulst was tested with visual discrimination tasks. Unilateral lesions yielded a marked deficit when the animals could only use the eye contralateral to the lesion. Otherwise the accomplishments of the ablated animals did not differ from that of the controls. The reciprocal inhibiti...
متن کاملLateral telencephalic lesions affect visual discriminations in pigeons.
The importance of the lateral telencephalon of the pigeon for visual performance was examined. Lesions in this area markedly impaired both the acquisition and the retention of instrumentally learned hue, intensity and pattern discriminations. Comparable lesions of the thalamofugal visual projection in the dorsoanterior telencephalon did not have an appreciable effect. Laterally lesioned pigeons...
متن کاملPhylogenetical analysis of partially sequenced cytb gene of Haemoproteus columbae in pigeons and its pathological lesions in Egypt
Background: Haemoproteus columbae is widely distributed in tropical and subtropical regions, causing pseudomalaria in pigeons. Aims: The current study aimed to characterize the phylogenetic position of H. columbae in pigeons in Sharkia province, Egypt, based on partial sequencing of the cytb gene as the conserved regions. The “DNA barcode” of the cytb gene helps in designing primers that can be...
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ژورنال
عنوان ژورنال: Japanese Journal of Physiological Psychology and Psychophysiology
سال: 1993
ISSN: 0289-2405
DOI: 10.5674/jjppp1983.11.13