Cite as:
O'Shea R P, Alais D, Parker. A, 2006, "The depth of suppression during monocular rivalry and binocular rivalry" Perception 35 ECVP Abstract Supplement

The depth of suppression during monocular rivalry and binocular rivalry

R P O'Shea, D Alais, A Parker.

Monocular rivalry, also known as pattern rivalry, occurs when two different, optically superimposed images are viewed: the images alternate irregularly in their clarity. It is similar to, but much weaker than, binocular rivalry, which occurs when two different images are presented to opposite eyes. In both phenomena, for a few moments one image dominates visual awareness while the other image is suppressed. To assess the depth of suppression we measured thresholds to detect a brief contrast increment to one image while it was suppressed and to the same image while it was dominant. Suppression thresholds during binocular rivalry were about 45% higher than dominance thresholds. Suppression thresholds during monocular rivalry were about 10% higher than dominance thresholds. Suppression depth in monocular rivalry is significant but much weaker than in binocular rivalry, consistent with the weak appearance of the monocular rivalry.

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