[Psychophysical study of the chromatic discrimination in pigeons after lesions of thalamic nuclei Rotundus (RT) and Geniculatus Lateralis ventralis (GLv)].


The discrimination threshold at 510 and 640 nm has been measured before and after the bilateral lesion with kaïnic acid of two main thalamic structures: the nucleus rotundus (Rt) and the nucleus geniculatus lateralis ventralis (GLv). When the lesion destroys the GLv and the lower part of the Rt, thresholds increase followed by a progressive recuperation. In… (More)


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