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  Orientation pop-out processing in human visual cortex

Bogler, C., Bode, S., & Haynes, J.-D. (2013). Orientation pop-out processing in human visual cortex. NeuroImage, 81, 73-80. doi:10.1016/j.neuroimage.2013.05.040.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-84CA-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-840E-9
Genre: Journal Article

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 Creators:
Bogler, Carsten1, 2, Author              
Bode, Stefan2, 3, 4, Author              
Haynes, John-Dylan1, 2, 3, Author              
Affiliations:
1Bernstein Center for Computational Neuroscience Berlin, Charité-Universitätsmedizin Berlin, Germany, ou_persistent22              
2Max Planck Fellow Research Group Attention and Awareness, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634553              
3Department of Neurology, Otto-von-Guericke University Magdeburg, Germany, ou_persistent22              
4Melbourne School of Psychological Sciences, The University of Melbourne, Australia, ou_persistent22              

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Free keywords: Pop-out; Visual attention; Visual cortex; Functional MRI
 Abstract: Visual stimuli can “pop out” if they are different to their background. There has been considerable debate as to the role of primary visual cortex (V1) versus higher visual areas (esp. V4) in pop-out processing. Here we parametrically modulated the relative orientation of stimuli and their backgrounds to investigate the neural correlates of pop-out in visual cortex while subjects were performing a demanding fixation task in a scanner. Whole brain and region of interest analyses confirmed a representation of orientation contrast in extrastriate visual cortex (V4), but not in striate visual cortex (V1). Thus, although previous studies have shown that human V1 can be involved in orientation pop-out, our findings demonstrate that there are cases where V1 is “blind” and pop-out detection is restricted to higher visual areas. Pop-out processing is presumably a distributed process across multiple visual regions.

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Language(s): eng - English
 Dates: 2013-05-062013-05-172013-11
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.neuroimage.2013.05.040
PMID: 23689014
Other: Epub 2013
 Degree: -

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Title: NeuroImage
Source Genre: Journal
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Publ. Info: Orlando, FL : Academic Press
Pages: - Volume / Issue: 81 Sequence Number: - Start / End Page: 73 - 80 Identifier: ISSN: 1053-8119
CoNE: https://pure.mpg.de/cone/journals/resource/954922650166