Three kinds of columns (white, equiluminance, and non-equiluminance) were rendered by 3ds-MAX, as shown in the left figure.
We measured changes of convergence
angle when subjects gazed from the rim of the white column to that of the equiluminance column, from the rim of the white column to that of non-equiluminance column, and from the rim of the equiluminance column to that of the non-equiluminance column
.
We measured movements of both eyes at the time of occlusion perception as subjects gazed at the column rim, and the parvocellular cells worked even for equiluminance.

Study on incongruence between binocular images when gazing at
the rim of a column with equiluminance random dots

本文へジャンプ April 1, 2019
 

Stereoscopic vision technology is applied in a wide range of fields, from 3D movies to medical care. Stereoscopic vision makes it possible to observe images in parallax between both eyes. However, parallax images cannot be used all the time due to a situation called "occlusion", in which an object is hidden in the depths by another object. In this case,different images are projected on the right and left retina. Here, we propose a psychology experiment to elucidate the function of parvocellular cells in the LGN of the visual cortex of the brain using occlusion perception.
As a new psychology experiment to clarify whether parvocellular cells in the LGN of the visual cortex, said to process chromatic and luminance information, can detect a disagreement between the retinal images produced by each eye, we measured convergence eye movement when gazing at the rim of a column under occlusion using an equiluminance random dot pattern.
When eye movement prevented the disagreement of the retinal images caused by occlusion, we thought that convergence eye movement to move both eyes in front of the rim or divergence eye movement to move them behind the rim would occur. In other words, we thought that we could clarify whether there was parvocellular system process agreement or disagreement between the right and left retinal images under equiluminance. Therefore, we examined whether a system to detect disagreement between the retinal images exists in the brain when gazing at the rim of a column onto which an equiluminance random dot texture was mapped.
Results suggested that the mechanism to avoid disagreement between the retinal images of the eyes caused by occlusion occurs in the parvocellular cells, which mainly process color information, as well as in the magnocellular cells, which process binocular disparity.

Reference
[1]Study on incongruence between binocular images when gazing at the rim of a column with equiluminance random dots,Shinya MOCHIDUKI, Reina WATANABE,Miyuki SUGANUMA, Hiroaki KUDO, Noboru OHNISHI,Mitsuho YAMADA,IEICE TRANS. FUNDAMENTALS   E101-A(6) 884-891   2018

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