Sharma, J.
2003-06-13
A fundamental aspect of visuomotor behavior is deciding where to look or move
next. Under certain conditions, the brain constructs an internal representation
of stimulus location on the basis of previous knowledge and uses it to move
the eyes or to make other movements. Neuronal responses in primary visual
cortex were modulated when such an internal representation was acquired:
Responses to a stimulus were affected progressively by sequential presentation
of the stimulus at one location but not when the location was varied randomly.
Responses of individual neurons were spatially tuned for gaze direction and
tracked the Bayesian probability of stimulus appearance. We propose that the
representation arises in a distributed cortical network and is associated with
systematic changes in response selectivity and dynamics at the earliest stages
of cortical visual processing.
https://doi.org/10.1126/science.1081721
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V1 Neurons Signal Acquisition of an Internal Representation of Stimulus Location
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