Visual Discrimination Performance after Lesions of the Ventral Lateral Geniculate Nucleus in Pigeons (Columba Livia)
Ventral lateral geniculate nucleus, Pigeon, Color discrimination, Pattern discrimination, Subcortical visual pathway, Thalamus
Digital Object Identifier (DOI)
Pigeons were trained to perform simultaneous pattern and color discrimination tasks. After their training was completed, bilateral electrolytic lesions were made in the ventral lateral geniculate nucleus (GLv). Following the surgery, they were retrained to their preoperative performance levels. Lesions of GLv caused no deficits in pattern discrimination performance. The birds which had been trained for discrimination of red vs. magenta showed a slight decline in their performance. This impaired performance on color discrimination was not, however, as severe as that of a bird with lesions in the nucleus rotundus. These results suggest that GLv plays some role in the detection of short wavelengths of light.
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Citation / Publisher Attribution
Behavioural Brain Research, v. 51, issue 2, p. 211-215
Scholar Commons Citation
Wikita, Masumi; Watanabe, Shigeru; Shimizu, Toru; and Britto, Luiz R. G., "Visual Discrimination Performance after Lesions of the Ventral Lateral Geniculate Nucleus in Pigeons (Columba Livia)" (1992). Psychology Faculty Publications. 371.