Effects of generalized pooling on binocular disparity selectivity of neurons in the early visual cortex.

ABSTRACT: The key problem of stereoscopic vision is traditionally defined as accurately finding the positional shifts of corresponding object features between left and right images. Here, we demonstrate that the problem must be considered in a four-dimensional parameter space; with respect not only to shifts in space (X, Y), but also spatial frequency (SF) and orientation (OR). The proposed model sums outputs of binocular energy units linearly over the multi-dimensional V1 parameter space (X, Y, SF, OR). Theoretical analyses and physiological experiments show that many binocular neurons achieve sharp binocular tuning properties by pooling the output of multiple neurons with relatively broad tuning. Pooling in the space domain sharpens disparity-selective responses in the SF domain so that the respon

SUBMITTER: Kato D 

PROVIDER: S-EPMC4901460 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature