1. What are the contributions in "Neural mechanisms for encoding binocular disparity: receptive field position versus phase" ?
Although there is evidence that supports each of these schemes, both mechanisms have not been examined in a single study to determine their relative roles.. In this study, the authors have measured RF position and phase disparities of individual simple cells in the cat ’ s striate cortex to address this issue.. These results suggest that binocular disparity is encoded mainly through RF phase disparity.
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2. Why did Ohzawa and colleagues find that complex cells encode binocular disparity?
Because phase encoding, but not position encoding, predicts asymmetric disparity tuning, they concluded that complex cells encode binocular disparity through RF phase disparity of subunits.
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3. Why is the RF disparity of a cell a static nonlinearity?
Because the static nonlinearity only affects response amplitude and not peak locations of disparity tuning functions, the RF disparity of a cell should correspond to the optimal binocular disparity for that cell.
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4. How did the authors compute the RF position and phase disparities for each cell?
Using the variance-covariance information, the authors generated random samples of the parameters and computed RF position and phase disparities for each cell.
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