Ll. Kontsevich, DEFAULTS IN STEREOSCOPIC AND KINETIC DEPTH-PERCEPTION, Proceedings - Royal Society. Biological Sciences, 265(1406), 1998, pp. 1615-1621
This study presents three findings concerning the mechanisms of depth
perception. First, the shape of the three-dimensional percept evoked b
y two-frame motion is defined solely by the rotation component around
an axis in the frontoparallel plane; the visual system assigns a defau
lt value to this rotation component to arrive at a unique solution. Se
cond, when the visual axes of two eyes are almost parallel, the visual
system uses a default vergence value to reconstruct stereoscopic dept
h. Third, the default vergence and default rotation angles are highly
correlated across subjects. This correlation implies that the two moda
lities share a common scaling default at an internal level.