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Spatial contexts can inhibit a mislocalization of visual stimuli during smooth pursuit

Noguchi, Yasuki and Shimojo, Shinsuke and Kakigi, Ryusuke and Hoshiyama, Minoru (2007) Spatial contexts can inhibit a mislocalization of visual stimuli during smooth pursuit. Journal of Vision, 7 (13). Art. No. 13. ISSN 1534-7362. http://resolver.caltech.edu/CaltechAUTHORS:NOGjov07

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Abstract

The position of a flash presented during pursuit is mislocalized in the direction of the pursuit. Although this has been explained by a temporal mismatch between the slow visual processing of flash and fast efferent signals on eye positions, here we show that spatial contexts also play an important role in determining the flash position. We put various continuously lit objects (walls) between veridical and to-be-mislocalized positions of flash. Consequently, these walls significantly reduced the mislocalization of flash, preventing the flash from being mislocalized beyond the wall (Experiment 1). When the wall was shortened or had a hole in its center, the shape of the mislocalized flash was vertically shortened as if cutoff or funneled by the wall (Experiment 2). The wall also induced color interactions; a red wall made a green flash appear yellowish if it was in the path of mislocalization (Experiment 3). Finally, those flash–wall interactions could be induced even when the walls were presented after the disappearance of flash (Experiment 4). These results indicate that various features (position, shape, and color) of flash during pursuit are determined with an integration window that is spatially and temporally broad, providing a new insight for generating mechanisms of eye-movement mislocalizations.


Item Type:Article
Additional Information:© 2007 ARVO Received April 29, 2007; published October 30, 2007. We thank Dr. Romi Nijhawan for his helpful comments on the manuscript and Dr. Junghyun Park for the fruitful discussion. This work was supported by grants from the Japan Society for the Promotion of Science for Young Scientists to Y.N. and ERATO project, JST. Commercial relationships: none.
Funders:
Funding AgencyGrant Number
Japan Society for the Promotion of Science (JSPS)UNSPECIFIED
Japan Science and Technology AgencyUNSPECIFIED
Subject Keywords:human, smooth pursuit, oculomotor, visual motion, position error
Issue or Number:13
Record Number:CaltechAUTHORS:NOGjov07
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:NOGjov07
Alternative URL:http://dx.doi.org/10.1167/7.13.13
Official Citation:Noguchi, Y., Shimojo, S., Kakigi, R., & Hoshiyama, M. (2007). Spatial contexts can inhibit a mislocalization of visual stimuli during smooth pursuit. Journal of Vision, 7(13):13, 1-15, http://journalofvision.org/7/13/13/, doi:10.1167/7.13.13.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9689
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:03 Mar 2008
Last Modified:14 Mar 2018 23:23

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