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David H. Hubel, Torsten N. Wiesel, Erin M. Yeagle, Rosa Lafer-Sousa, Bevil R. Conway, Binocular Stereoscopy in Visual Areas V-2, V-3, and V-3A of the Macaque Monkey, Cerebral Cortex, Volume 25, Issue 4, April 2015, Pages 959–971, https://doi.org/10.1093/cercor/bht288
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Abstract
Over 40 years ago, Hubel and Wiesel gave a preliminary report of the first account of cells in monkey cerebral cortex selective for binocular disparity. The cells were located outside of V-1 within a region referred to then as “area 18.” A full-length manuscript never followed, because the demarcation of the visual areas within this region had not been fully worked out. Here, we provide a full description of the physiological experiments and identify the locations of the recorded neurons using a contemporary atlas generated by functional magnetic resonance imaging; we also perform an independent analysis of the location of the neurons relative to an anatomical landmark (the base of the lunate sulcus) that is often coincident with the border between V-2 and V-3. Disparity-tuned cells resided not only in V-2, the area now synonymous with area 18, but also in V-3 and probably within V-3A. The recordings showed that the disparity-tuned cells were biased for near disparities, tended to prefer vertical orientations, clustered by disparity preference, and often required stimulation of both eyes to elicit responses, features strongly suggesting a role in stereoscopic depth perception.
