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Dissociable Processes for Orientation Discrimination Learning and Contextual Illusion Magnitude.

Wilks, CE; Rees, G; Schwarzkopf, DS; (2014) Dissociable Processes for Orientation Discrimination Learning and Contextual Illusion Magnitude. PLoS One , 9 (7) , Article e103121. 10.1371/journal.pone.0103121. Green open access

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Abstract

Previous research suggests an inverse relationship between human orientation discrimination sensitivity and tilt illusion magnitude. To test whether these perceptual functions are inherently linked, we measured both orientation discrimination sensitivity and the magnitude of the tilt illusion before and after participants had been trained for three days on an orientation discrimination task. Discrimination sensitivity improved with training and this improvement remained one month after the initial learning. However, tilt illusion magnitude remained unchanged before and after orientation training, at either trained or untrained orientations. Our results suggest that orientation discrimination sensitivity and illusion magnitude are not inherently linked. They also provide further evidence that, at least for the training periods we employed, perceptual learning of orientation discrimination may involve high-level processes.

Type: Article
Title: Dissociable Processes for Orientation Discrimination Learning and Contextual Illusion Magnitude.
Open access status: An open access version is available from UCL Discovery
DOI: 10.1371/journal.pone.0103121
Publisher version: http://dx.doi.org/10.1371/journal.pone.0103121
Additional information: © 2014 Wilks et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1436153
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