Orientation selectivities of tilt illusion for chromatic and luminance stimuli

• OHTANI Yoshio

  Department of Liberal Arts and Sciences, Faculty of Engineering

• IDO Keisuke

  Division of Cognitive Science, Graduate School of Human and Environmental Studies, Kyoto University

• EJIMA Yoshimichi

  Division of Cognitive Science, Graduate School of Human and Environmental Studies, Kyoto University

抄録

Simultaneous orientation contrast, or tilt illusion (TI), is known as misperception of orientation of a stimulus when it is juxtaposed with another stimulus of a different orientation. Using isoluminant chromatic and isochromatic luminance gratings, magnitude of TI was measured as a function of orientation difference between the test and the inducing gratings. The results showed that TI occurred for the chromatic as well as the luminance gratings, and that the TI vs. orientation difference functions for the chromatic gratings were broader than that for the luminance gratings. These results suggest that chromatic information on its own contributes to the processing of stimulus orientation, and the orientation selective mechanisms sensitive to chromatic contrast are more broadly-tuned than those sensitive to luminance contrast.

収録刊行物

• 富山県立大学紀要

  富山県立大学紀要 4 32-43, 1994-03

  富山県立大学

キーワード

• Tilt illusion
• Orientation selectivity
• Chromaticity-sensitive mechanism
• Luminance-sensitive mechanism

詳細情報

• CRID: 1574231876549764864
• NII論文ID: 110000477672
• NII書誌ID: AN10358595
• ISSN: 09167633
• 本文言語コード: en
• データソース種別:
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