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Proceedings Paper

Difference between seeing a random color dot picture and reading shapes from the same color dot picture in the Ishihara pseudoisochromatic plates
Author(s): Yasuyo G. Ichihara; Satoshi Nakadomari; Hiroaki Takeuchi; Satoru Miyauchi; Kenji Kitahara
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Paper Abstract

When we are viewing colored picture, what is the difference in our brain between a random Color dot picture and a digit figure pattern picture seen through its colored dots? We created 3 patterns that are a functional magnetic resonance imaging version of the Ishihara plate patterns to test multiple color-sensitive areas in human ventral occipitotemporal cortex. The results showed that area V4 is activated by the stimulus of reading shapes from its color dots in the Ishihara pseudoisochromatic plates but not by the stimulus of seeing a random color dot picture. We suggest that area V4 is activated not by color processing but by segregation.

Paper Details

Date Published: 6 June 2002
PDF: 4 pages
Proc. SPIE 4421, 9th Congress of the International Colour Association, (6 June 2002); doi: 10.1117/12.464765
Show Author Affiliations
Yasuyo G. Ichihara, Hosen Gakuen College (Japan)
Satoshi Nakadomari, Kanagawa Rehabilitation Hospital and Jikei Univ. School of Medicine (Japan)
Hiroaki Takeuchi, Kanagawa Rehabilitation Hospital (Japan)
Satoru Miyauchi, Communications Research Lab. (Japan)
Kenji Kitahara, Jikei Univ. School of Medicine (Japan)


Published in SPIE Proceedings Vol. 4421:
9th Congress of the International Colour Association

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