Non-linear global pooling in the discrimination of circular and non-circular shapes

Gunnar Schmidtmann; Graeme Kennedy; Harry Orbach; Gunter Loffler

doi:10.1016/j.visres.2012.03.001

Non-linear global pooling in the discrimination of circular and non-circular shapes

Gunnar Schmidtmann, Graeme Kennedy, Harry Orbach, Gunter Loffler

Vision Sciences

Research output: Contribution to journal › Article

Abstract

The ability to discriminate minute deviations from circularity is dependent upon global summation mechanisms integrating information along entire contours. The aim of this study was to determine how the strength of global summation depends on various stimulus features. To determine if the strength of global summation differs between shapes, contour discrimination for various contour shapes, generated by applying a sinusoidal modulation to the radius of a circle (radial frequency – RF – patterns), was measured.

Original language	English
Pages (from-to)	44-56
Number of pages	12
Journal	Vision Research
Volume	62
Issue number	1
DOIs	https://doi.org/10.1016/j.visres.2012.03.001
Publication status	Published - Jun 2012

Keywords

shape perception
form vision
contour
vision sciences

Documents and Links

10.1016/j.visres.2012.03.001

Cite this

Schmidtmann, G., Kennedy, G., Orbach, H., & Loffler, G. (2012). Non-linear global pooling in the discrimination of circular and non-circular shapes. Vision Research, 62(1), 44-56. https://doi.org/10.1016/j.visres.2012.03.001

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