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In 1593, Neapolitan polymath Giambattista della Porta publicly that he was unable to improve his impressive productivity (he had published in areas as diverse as cryptography, , pharmacology, optics, and classic fiction). Della was trying to read two books simultaneously by placing volumes side-by-side, and using each eye independently. To great surprise, his setup allowed him to only read one book at time. This discovery arguably marks the first written account binocular rivalry (Wade, 2000) – a perceptual phenomenon more than 400 years later still both serves to intrigue as as to illuminate the limits of scientific knowledge. At first, binocular rivalry is an oddball. In every day vision, our receive largely matching views of the world. The brain combines two images into a cohesive scene, and concurrently, is stable. However, when showing two very different (such as two different books) to each eye, the brain the conflict by adopting a “diplomatic” strategy. Rather mixing the views of the two eyes into an insensible visual, observers perceive a dynamically changing series of snapshots, with one eye’s view dominating for a few before being replaced by its rival from the other eye. prolonged viewing of a rivalrous stimulus, one inevitably a sequence of subjective perceptual reversals, separated random time intervals, and this process continues for long as the sensory conflict is present.
Maier et al. (Sun,) studied this question.