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Competitive mechanisms subserve attention in macaque areas V2 and V4 (1989)
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| Venue: | Journal of Neuroscience |
| Citations: | 368 - 14 self |
BibTeX
@ARTICLE{Reynolds89competitivemechanisms,
author = {John H. Reynolds and Leonardo Chelazzi and Robert Desimone},
title = {Competitive mechanisms subserve attention in macaque areas V2 and V4},
journal = {Journal of Neuroscience},
year = {1989}
}
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Abstract
It is well established that attention modulates visual processing in extrastriate cortex. However, the underlying neural mechanisms are unknown. A consistent observation is that attention has its greatest impact on neuronal responses when multiple stimuli appear together within a cell’s receptive field. One way to explain this is to assume that multiple stimuli activate competing populations of neurons and that attention biases this competition in favor of the attended stimulus. In the absence of competing stimuli, there is no competition to be resolved. Accordingly, attention has a more limited effect on the neuronal response to a single stimulus. To test this interpretation, we measured the responses of neurons in macaque areas V2 and V4 using a behavioral paradigm that allowed us to isolate automatic sensory processing mechanisms from attentional effects. First, we measured each cell’s response to a single
Keyphrases
macaque area v2 competitive mechanism neuronal response behavioral paradigm underlying neural mechanism automatic sensory limited effect extrastriate cortex consistent observation multiple stimulus activate attentional effect receptive field attention modulates visual processing single stimulus attended stimulus multiple stimulus
