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Paper Abstract and Keywords
Presentation 2014-03-17 13:30
An explanation of an afterimage rotation illusion by focusing time of retinal ON/OFF response
Yuichiro Hayashi, Hidetoshi Urakubo, Shin Ishii (Kyoto Univ)
Abstract (in Japanese) (See Japanese page) 
(in English) Motion illusion is one of visual illusions that evokes motion by a static image.
To elucidate operating principles of the human visual system, it is important to reveal the mechanisms of the motion illusions.
One of such motion illusions is the peripheral drift illusion.
The Faubert and Herbert image (FH image) is known as a stimulus image that evokes the peripheral drift illusion.
When the FH image (pre-stimulus) disappears to a uniform background image (post-stimulus) after the presentation for several seconds, observers perceive illusory rotation of the afterimage (afterimage rotation) at the moment. Here, to explain this afterimage rotation, we proposed a simple mathematical model of retinal functions.
In this model, the FH image was transferred to spatio-temporally varying noisy outputs, and those outputs produced focal points during the post-stimulus period.
The focal time accompanied luminance-dependent lag, and this lag had the similar characteristics of the afterimage rotation.
We quantified the afterimage rotation by psychophysical experiments, and compared them with the output of the model.
We report that the proposed model successfully explained some characteristics of the afterimage rotation.
Keyword (in Japanese) (See Japanese page) 
(in English) Peripheral drift illusion / Afterimage / Psychophysical experiment / Retinal model / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 500, NC2013-93, pp. 31-36, March 2014.
Paper # NC2013-93 
Date of Issue 2014-03-10 (NC) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee NC MBE  
Conference Date 2014-03-17 - 2014-03-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Tamagawa University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To NC 
Conference Code 2014-03-NC-MBE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An explanation of an afterimage rotation illusion by focusing time of retinal ON/OFF response 
Sub Title (in English)  
Keyword(1) Peripheral drift illusion  
Keyword(2) Afterimage  
Keyword(3) Psychophysical experiment  
Keyword(4) Retinal model  
1st Author's Name Yuichiro Hayashi  
1st Author's Affiliation Kyoto University (Kyoto Univ)
2nd Author's Name Hidetoshi Urakubo  
2nd Author's Affiliation Kyoto University (Kyoto Univ)
3rd Author's Name Shin Ishii  
3rd Author's Affiliation Kyoto University (Kyoto Univ)
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Date Time 2014-03-17 13:30:00 
Presentation Time 20 
Registration for NC 
Paper # IEICE-NC2013-93 
Volume (vol) IEICE-113 
Number (no) no.500 
Page pp.31-36 
#Pages IEICE-6 
Date of Issue IEICE-NC-2014-03-10 

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