Schiller PH; Slocum, WM; Weiner, VS
Eur J Neurosci, 26(5), 1307-21.
Abstract
Reconstructing the third dimension in the visual scene from the two dimensional
images that impinge on the retinal surface is one of the major tasks of the
visual system. We have devised a visual display that makes it possible to study
stereoscopic depth cues and motion parallax cues separately or in concert using
rhesus macaques. By varying the spatial frequency of the display and its luminance
and chrominance, it is possible to selectively activate channels that originate
in the primate retina. Our results show that (i) the parasol system plays a
central role in processing motion parallax cues; (ii) the midget system plays
a central role in stereoscopic depth perception at high spatial frequencies,
and (iii) red/green colour selective neurons can effectively process both cues
but blue/yellow neurons cannot do so.