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Border-ownership-dependent tilt aftereffect

Rüdiger von der Heydt1, Todd Macuda, Fangtu T Qiu

  • 1Department of Neuroscience and Krieger Mind/Brain Institute, Johns Hopkins University, Baltimore, Maryland 21210, USA. von.der.heydt@jhu.edu

Journal of the Optical Society of America. A, Optics, Image Science, and Vision
|November 10, 2005
PubMed

Single-cell recordings from macaque visual cortex have shown orientation-selective neurons in area in V2 code for border ownership [J. Neurosci. 20, 6594 (2000)]: Each piece of contrast border is represented by two pools of neurons whose relative firing rate indicates the side of border ownership. Here we show that the human visual cortex uses a similar coding scheme by demonstrating a border-ownership-contingent tilt aftereffect. The aftereffect was specific for the adapted location, indicating that the adapted neurons have small receptive fields. We conclude that figure-ground organization is represented by border-ownership-selective neurons at early stages in the human visual cortex.

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