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  Active control does not eliminate motion-induced illusory displacement

Thornton, I., Caniard, F., Mamassian, P., & Bülthoff, H. (2011). Active control does not eliminate motion-induced illusory displacement. i-Perception, 2(4), 209.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-BB42-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-5469-A
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APCV-2011-Thornton.pdf (Abstract), 65KB
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Thornton, IM, Author              
Caniard, F1, 2, Author              
Mamassian, P, Author              
Bülthoff, HH1, 2, Author              
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: When the sine-wave grating of a Gabor patch drifts to the left or right, the perceived position of the entire object is shifted in the direction of local motion. In the current work we explored whether active control of the physical position of the patch overcomes such motion induced illusory displacement. In Experiment 1 we created a simple computer game and asked participants to continuously guide a Gabor patch along a randomly curving path using a joystick. When the grating inside the Gabor patch was stationary, participants could perform this task without error. When the grating drifted to either left or right, we observed systematic errors consistent with previous reports of motion-induced illusory displacement. In Experiment 2 we created an iPad application where the built-in accelerometer tilt control was used to steer the patch through as series of “gates”. Again, we observed systematic guidance errors that depended on the direction and speed of local motion. In conclusion, we found no evidence that participants could adapt or compensate for illusory displacement given active control of the target.

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 Dates: 2011-07
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: ThorntonCMB2011_2
DOI: 10.1068/ic209
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Title: 7th Asia-Pacific Conference on Vision (APCV 2011)
Place of Event: Hong Kong
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Title: i-Perception
Source Genre: Journal
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Pages: - Volume / Issue: 2 (4) Sequence Number: - Start / End Page: 209 Identifier: -