Both Monocular and Binocular Signals Contribute to Motion Rivalry
Xin Meng, Yuzhi Chen, and Ning Qian, Vision Research 2004, 44:45-55.
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Abstract
There is an ongoing debate on whether binocular rivalry involves
competition among monocular cells or binocular cells. We investigated
this issue psychophysically with two specially designed test
stimuli. One test stimulus contained monocular motion signals but
greatly reduced binocular motion signals, while the other contained
binocular motion signals but no monocular motion signals. For
comparison, we also employed a normal rivalrous control containing
both monocular and binocular motion signals, and a non-rivalrous
flicker-noise control with neither monocular nor binocular motion
signals. We found that binocular rivalry for the two test stimuli was
significantly reduced compared with the normal rivalrous control, but
not completely eliminated compared with the non-rivalrous
control. Therefore, both monocular and binocular motion signals appear
to contribute to motion rivalry, suggesting that motion rivalry must
involve competition among both monocular and binocular cells.
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