Adaptation to transients disrupts spatial coherence in binocular rivalry

Area of Science:

• Neuroscience
• Visual Perception
• Computational Vision

Background:

• Binocular rivalry occurs when dissimilar images are presented to each eye, causing perceptual alternations.
• Previous research suggested adaptation to interocular conflict drives mixed percepts, but overlooked visual transients.
• Visual transients, sudden changes in stimuli, may influence binocular rivalry dynamics.

Purpose of the Study:

• To investigate the role of visual transients versus interocular conflict in promoting mixed percepts during binocular rivalry.
• To determine the primary driver of increased mixed percepts: adaptation to conflict or visual transients.

Main Methods:

• Participants observed images designed to induce binocular rivalry with varying degrees of visual transients and interocular conflict.
• Perceptual reports of rivalry, suppression, and mixed percepts were collected.
• Stimulus parameters were controlled to isolate the effects of visual transients.

Main Results:

• Prolonged and repeated exposure to strong visual transients significantly increased the frequency of mixed percepts.
• The degree of interocular conflict alone did not correlate with an increase in mixed percepts.
• Visual transients were identified as the key factor driving adaptation to interocular suppression and disruption of rivalry.

Conclusions:

• Visual transients, not adaptation to conflict, are the primary cause of increased mixed percepts in binocular rivalry.
• Sudden visual changes capture attention, enhance image representations, and facilitate adaptation to suppression, disrupting rivalry.
• Findings are critical for designing virtual and augmented reality systems to minimize unwanted binocular rivalry.