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Border-ownership-dependent tilt aftereffect in incomplete figures

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Abstract

A recent physiological finding of neural coding for border ownership (BO) that defines the direction of a figure with respect to the border has provided a possible basis for figure–ground segregation. To explore the underlying neural mechanisms of BO, we investigated stimulus configurations that activate BO circuitry through psychophysical investigation of the BO-dependent tilt aftereffect (BO-TAE). Specifically, we examined robustness of the border ownership signal by determining whether the BO-TAE is observed when gestalt factors are broken. The results showed significant BO-TAEs even when a global shape was not explicitly given due to the ambiguity of the contour, suggesting a contour-independent mechanism for BO coding.

© 2006 Optical Society of America

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Border-ownership-dependent tilt aftereffect

Rüdiger von der Heydt, Todd Macuda, and Fangtu T. Qiu
J. Opt. Soc. Am. A 22(10) 2222-2229 (2005)

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