The Journal of Cognitive Neuroscience, Vol 10, 46-60, Copyright © 1998 by The MIT Press
Binocular Rivalry and Motor Perception
Randolph Blake, Karen Yu, Michelle Lokey and Hideko Norman
In a series of experiments psychophysical techniques were used to study the
relation between binocular rivalry and motion perception. An initial series
of experiments confirmed that motion enhances the predominance of an eye
during rivalry, although the direction of motion does not matter. The
presence of an annulus of motion immediately surrounding one eye's rival
target greatly enhances dominance of that target, but the influence of the
annulus progressively decreases as the separation between disk and annulus
increased. Opponent directions of motion in disk and annulus yield greater
dominance than when dots in the disk and annulus moved in identical
directions. In a second experiment the two eyes were adapted to orthogonal
directions of motion, generating strong, distinctively different monocular
motion aftereffects (MAEs). Even though the two eyes view physically
identical random-motion displays following differential adaptation,
binocular rivalry of the discrepant MAEs can occur. Finally, using a
stimulus replacement technique to measure detectability of translational
and rotational motion, it was found that both types of motion were readily
detected during periods of dominance but went undetected during periods of
suppression. Taken together, these
