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Eye fixation during multiple object attention is based on a representation of discrete spatial foci

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Fluharty_2016_EyeFixation_SREP_CCBY.pdf (1.112Mb)
Date
26/08/2016
Author
Fluharty, Meg
Jentzsch, Ines
Spitschan, Manuel
Vishwanath, Dhanraj
Keywords
RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
NDAS
BDC
R2C
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Abstract
We often look at and attend to several objects at once. How the brain determines where to point our eyes when we do this is poorly understood. Here we devised a novel paradigm to discriminate between different models of spatial selection guiding fixation. In contrast to standard static attentional tasks where the eye remains fixed at a predefined location, observers selected their own preferred fixation position while they tracked static targets that were arranged in specific geometric configurations and which changed identity over time. Fixations were best predicted by a representation of discrete spatial foci, not a polygonal grouping, simple 2-foci division of attention or a circular spotlight. Moreover, attentional performance was incompatible with serial selection, suggesting that attentional selection and fixation share the same spatial representation. Together with previous findings on fixational microsaccades during covert attention, our results suggest a more nuanced definition of overt vs. covert attention.
Citation
Fluharty , M , Jentzsch , I , Spitschan , M & Vishwanath , D 2016 , ' Eye fixation during multiple object attention is based on a representation of discrete spatial foci ' , Scientific Reports , vol. 6 , 31832 . https://doi.org/10.1038/srep31832
Publication
Scientific Reports
Status
Peer reviewed
DOI
https://doi.org/10.1038/srep31832
ISSN
2045-2322
Type
Journal article
Rights
This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/9377

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