The effect of gaze angle and fixation distance on the responses of neurons in V1, V2, and V4

D Rosenbluth, JM Allman - Neuron, 2002 - cell.com
D Rosenbluth, JM Allman
Neuron, 2002cell.com
What we see depends on where we look. This paper characterizes the modulatory effects of
point of regard in three-dimensional space on responsiveness of visual cortical neurons in
areas V1, V2, and V4. Such modulatory effects are both common, affecting 85% of cells, and
strong, frequently producing changes of mean firing rate by a factor of 10. The prevalence of
neurons in area V4 showing a preference for near distances may be indicative of the
involvement of this area in close scrutiny during object recognition. We propose that eye …
Abstract
What we see depends on where we look. This paper characterizes the modulatory effects of point of regard in three-dimensional space on responsiveness of visual cortical neurons in areas V1, V2, and V4. Such modulatory effects are both common, affecting 85% of cells, and strong, frequently producing changes of mean firing rate by a factor of 10. The prevalence of neurons in area V4 showing a preference for near distances may be indicative of the involvement of this area in close scrutiny during object recognition. We propose that eye-position signals can be exploited by visual cortex as classical conditioning stimuli, enabling the perceptual learning of systematic relationships between point of regard and the structure of the visual environment.
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