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Science 8 March 1991:
Vol. 251. no. 4998, pp. 1251 - 1253
DOI: 10.1126/science.2006413
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Articles

Science, Vol 251, Issue 4998, 1251-1253
Copyright © 1991 by American Association for the Advancement of Science

articles

The role of the primate extrastriate area V4 in vision

PH Schiller and K Lee

Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge 02139.

Area V4 is a part of the primate visual cortex. Its role in vision has been extensively debated. Inferences about the functions of this area have now been made by examination of a broad range of visual capacities after ablation of V4 in rhesus monkeys. The results obtained suggest that this area is involved in more complex aspects of visual information processing than had previously been suggested. Monkeys had particularly severe deficits in situations where the task was to select target stimuli that had a lower contrast, smaller size, or slower rate of motion than the array of comparison stimuli from which they had to be discriminated. Extensive training on each specific task resulted in improved performance. However, after V4 ablation, the monkeys could not generalize the specific task to new stimulus configurations and to new spatial locations.


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Spectral Receptive Field Properties Explain Shape Selectivity in Area V4.
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Effects of Task Difficulty and Target Likelihood in Area V4 of Macaque Monkeys.
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Impaired Filtering of Distracter Stimuli by TE Neurons following V4 and TEO Lesions in Macaques.
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Target Selection in Area V4 during a Multidimensional Visual Search Task.
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