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J Neurophysiol (May 13, 2009). doi:10.1152/jn.91253.2008
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Submitted on November 25, 2008
Revised on May 4, 2009
Accepted on May 5, 2009

Temporal information can influence spatial localization

Femke Maij1*, Eli Brenner2, and Jeroen B. J. Smeets3

1 VU University
2 University of Amsterdam
3 Vrije Universiteit

* To whom correspondence should be addressed. E-mail: j.maij{at}fbw.vu.nl.

In order to localize objects relative to our body we need to combine various sensory and motor signals. When these signals change abruptly, as information about eye orientation does during saccades, small differences in latency between the signals could introduce localization errors. We examine whether independent temporal information can influence such errors. We asked participants to follow a randomly jumping dot with their eyes and to point at flashes that occurred near the time they made saccades. Such flashes are mislocalized. We presented a tone at different times relative to the flash. We found that the flash was mislocalized as if it had occurred closer in time to the tone. This demonstrates that temporal information is taken into consideration when combining sensory information streams for localization.







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