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  • Title: [Investigation of the perception of incomplete contour figures of the various size].
    Author: Bakhrameeva OA, Shelepin IuE, Mezentsev AIu, Pronin SV.
    Journal: Ross Fiziol Zh Im I M Sechenova; 2008 Oct; 94(10):1158-70. PubMed ID: 19065829.
    Abstract:
    The purpose of the current research was to estimate the range of angular sizes of incomplete images across which the perception of the given images does not depend on scale. We have measured thresholds of recognition of the identities of objects across a wide range of angular sizes from 0.19 to 50 degrees of visual angle. The methodology derived from the Gollin-test which has been used as a method for studying the perception of objects presented as incomplete contour and pattern recognition. Results demonstrated that there is a wide range of angular sizes (from 1 .0 up to 50 degrees of visual angle) across which thresholds perception of incomplete images does not depend on object size. However, there was found a narrow range of small sizes of stimulus (0.19-1.0 degrees of visual angle) at which there was found dependence of performance on object size. We assume that increase of thresholds and occurrence of undistinguished images (when they have small size) depends on increase of the contribution of sampling noise at the observer's eye retina.
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