Neuronal Computation of Disparity in V1 Limits Temporal Resolution for Detecting Disparity Modulation
نویسندگان
چکیده
منابع مشابه
Neuronal computation of disparity in V1 limits temporal resolution for detecting disparity modulation.
The human ability to detect modulation of binocular disparity over time is poor compared with detection of luminance modulation. We examined the physiological origin of this limitation by analyzing neuronal responses to temporal modulation of binocular disparity in striate cortex of awake monkeys. When neurons were presented with random-dot stereograms in which disparity varied sinusoidally ove...
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The contribution of interocular orientation differences to depth perception, at either the neuronal or the psychophysical level, is unclear. To understand the responses of binocular neurons to orientation disparity, we extended the energy model of Ohzawa et al. (1990) to incorporate binocular differences in receptive-field orientation. The responses of the model to grating stimuli with interocu...
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Disparity selectivity in the striate cortex has generally been studied with uniform disparity fields covering the receptive field (RF). In four awake behaving monkeys, we quantitatively characterized the spatial three-dimensional structure of 55 V1 RFs using random dot stereograms in which disparity varied as a sinusoidal function of vertical position ("corrugations"). At low spatial frequencie...
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We previously proposed a physiologically realistic model for stereo vision based on the quantitative binocular receptive field profiles mapped by Freeman and coworkers. Here we present several new results about the model that shed light on the physiological processes involved in disparity computation. First, we show that our model can be extended to a much more general class of receptive field ...
متن کاملCooperative computation of stereo disparity.
The extraction of stereo-disparity information from two images depends upon establishing a correspondence between them. In this article we analyze the nature of the correspondence computation and derive a cooperative algorithm that implements it. We show that this algorithm successfully extracts information from random-dot stereograms, and its implications for the psychophysics and neurophysiol...
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ژورنال
عنوان ژورنال: Journal of Neuroscience
سال: 2005
ISSN: 0270-6474,1529-2401
DOI: 10.1523/jneurosci.2342-05.2005