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  It takes two to tango: Suppression of task-irrelevant features requires (spatial) competition

Müller, M. M., Gundlach, C., Forschack, N., & Brummerloh, B. (2018). It takes two to tango: Suppression of task-irrelevant features requires (spatial) competition. NeuroImage, 178, 485-492. doi:10.1016/j.neuroimage.2018.05.073.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-791B-A Version Permalink: http://hdl.handle.net/21.11116/0000-0003-9796-9
Genre: Journal Article

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 Creators:
Müller, Matthias M.1, Author
Gundlach, Christopher1, Author              
Forschack, Norman2, Author              
Brummerloh, Berit1, Author
Affiliations:
1Institute of Psychology, University of Leipzig, Germany, ou_persistent22              
2Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              

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Free keywords: Competition; Feature-based attention; Global suppression of task-irrelevant features; Human visual cortex; Oscillatory steady-state responses
 Abstract: In a recent electrophysiological study, we reported on global facilitation but local suppression of color stimuli in feature-based attention in human early visual cortex. Subjects attended to one of two centrally located superimposed red/blue random dot kinematograms (RDKs). Task-irrelevant single RDKs in the same colors were presented in the left and right periphery, respectively. Suppression of the to-be-ignored color was only present in the centrally located RDK but not in the one with the same color in the periphery. This result was at odds with the idea of active suppression of task-irrelevant features across the entire visual field. In the present study, we introduced competition in the periphery by superimposing the RDKs at the task-irrelevant location as well. With such competition, we found suppression of the task-irrelevant color in the centrally and peripherally located RDKs. Results clearly demonstrate that suppression of task-irrelevant features at task-irrelevant locations requires (spatial) competitive interactions and is not an inherent neural mechanism in feature-based attention as was found for global facilitation.

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Language(s): eng - English
 Dates: 2018-04-302018-02-152018-05-302018-05-312018-09
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.neuroimage.2018.05.073
BibTex Citekey: muller_it_2018
PMID: 29860080
Other: Epub 2018
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Project name : -
Grant ID : MU 972/20-1
Funding program : -
Funding organization : German Research Foundation (DFG)

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Title: NeuroImage
Source Genre: Journal
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Publ. Info: Orlando, FL : Academic Press
Pages: - Volume / Issue: 178 Sequence Number: - Start / End Page: 485 - 492 Identifier: ISSN: 1053-8119
CoNE: https://pure.mpg.de/cone/journals/resource/954922650166