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  Attentional facilitation of constituent features of an object does not spread automatically along object-defining cortical boundaries

Brummerloh, B., Gundlach, C., & Müller, M. M. (2019). Attentional facilitation of constituent features of an object does not spread automatically along object-defining cortical boundaries. Journal of Cognitive Neuroscience, 31(2), 278-287. doi:10.1162/jocn_a_01350.

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 Creators:
Brummerloh, Berit1, Author
Gundlach, Christopher1, Author           
Müller, Matthias M.1, Author
Affiliations:
1University of Leipzig, Germany, ou_persistent22              

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 Abstract: The integrated object account predicts that attention is spread
across all features that constitute one object, regardless of
their task relevance. We challenge that prediction with a novel
stimulation technique that allows for simultaneous
electrophysiological measurements of the allocation of attention
to two distinct features within one object. A rotating square
that flickers in different colors evoked two distinct
steady-state visual evoked potentials (SSVEPs) for rotation and
color, respectively. If the integrated object account were true,
we would expect identical SSVEP amplitudes regardless of what
feature participants attended. We found greater SSVEP amplitudes
for the to-be-attended feature compared with the to-be-ignored
feature. SSVEP amplitudes averaged across both features were
significantly reduced when participants attended to both
features, which was mirrored in behavioral costs, implying
competitive interactions or a division of attentional resources.
Surprisingly, this reduction in amplitude was mainly driven by
the SSVEP amplitude elicited by color changes. In conclusion, our
results challenge the integrated object account and highlight the
extent to which color is ``special'' within feature space.

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Language(s): eng - English
 Dates: 2018-12-272019-02
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1162/jocn_a_01350
BibTex Citekey: Brummerloh2019-el
PMID: 30321092
Other: Epub 2018
 Degree: -

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Title: Journal of Cognitive Neuroscience
Source Genre: Journal
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Affiliations:
Publ. Info: Cambridge, MA : MIT Press Journals
Pages: - Volume / Issue: 31 (2) Sequence Number: - Start / End Page: 278 - 287 Identifier: ISSN: 0898-929X
CoNE: https://pure.mpg.de/cone/journals/resource/991042752752726