Stereoscopic depth discrimination in the visual cortex
Citation Info
Izumi Ohzawa, Gregory C. DeAngelis, Ralph D. Freeman (1990)
Stereoscopic depth discrimination in the visual cortex: neurons ideally suited as disparity detectors.
Science 249: 1037-1041.
Abstract
The possibility has been explored that a subset of physiologically
identifiable cells in the visual cortex is especially suited for the
processing of stereoscopic depth information. First, characteristics of a
disparity detector that would be useful for such processing were outlined.
Then, a method was devised by which detailed binocular response data were
obtained from cortical cells. In addition, a model of the disparity
detector was developed that includes a plausible hierarchical arrangement
of cortical cells. Data from the cells compare well with the requirements
for the archetypal disparity detector and are in excellent agreement with
the predictions of the model. These results demonstrate that a specific
type of cortical neuron exhibits the desired characteristics of a disparity
detector.
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