Cooperative neural processes involved in stereoscopic acuity

✍ Scribed by G. Westheimer

• Book ID: 104677600
• Publisher: Springer-Verlag
• Year: 1979
• Tongue: English
• Weight: 806 KB
• Volume: 36
• Category: Article
• ISSN: 0014-4819
• DOI: 10.1007/bf00238525

✦ Synopsis

Results of psychophysical experiments are reported showing that synchrony, appropriate relative placement, and absence of standing disparity are important conditions to be met by members of a target configuration if they are to participate in the cooperative neural processes leading to the best disparity discrimination. Consecutive binocular presentation of the members of a stereo target decreases stereoacuity by a factor of about 10, and a step disparity displacement of a single line target needs to be larger still to be detected as a depth stimulus. A standing disaprity of even one minute of arc at least doubles the disaprity disxrimination threshold. It is postulated that a differencing mechanism operates on the depth signal of individual features; the temporal and spatial optima of target presentation for stereoscopic acuity outline the character of the concerned operations.