In the way orientation columns display selectivity for various edge orientations projected on the retina which is then repeated at various angles in a localised region of the cortex. I am wondering whether in an analogous fashion if any similar neuronal circuitry has been shown to represent variations in the surface slant at the region being projected onto the retina.
By slant I mean a measure of the surfaces orientation away from co-planar with the visual focal plane.
Perhaps this information is extracted from binocular receptive fields?
If it hasn't been found then I guess I'm also wondering if anyone has ever looked? and or how the depth information from binocular receptive fields is encoded/represented for further processing?