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@ARTICLE{Vossel:281916,
author = {Vossel, Simone and Weidner, Ralph and Moos, Katharina and
Fink, Gereon R.},
title = {{I}ndividual attentional selection capacities are reflected
in interhemispheric connectivity of the parietal cortex},
journal = {NeuroImage},
volume = {129},
issn = {1053-8119},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {FZJ-2016-01572},
pages = {148 - 158},
year = {2016},
abstract = {Modelling psychophysical data using the Theory of Visual
Attention (TVA) allows for a quantification of attentional
sub-processes, such as the resolution of competition amongst
multiple stimuli by top-down control signals for target
selection (TVA-parameter α). This fMRI study investigated
the neural correlates of α by comparing activity
differences and changes of effective connectivity between
conditions where a target was accompanied by a distractor or
by a second target. Twenty-five participants performed a
partial report task inside the MRI scanner. The left angular
gyrus (ANG), medial frontal, and posterior cingulate cortex
showed higher activity when a target was accompanied by a
distractor as opposed to a second target. The reverse
contrast yielded activation of a bilateral fronto-parietal
network, the anterior insula, anterior cingulate cortex, and
left inferior occipital gyrus. A psychophysiological
interaction analysis revealed that the connectivity between
left ANG and the left and right supramarginal gyrus (SMG),
left anterior insula, and right putamen was enhanced in the
target-distractor condition in participants with worse
attentional top-down control. Dynamic causal modelling
suggested that the connection from left ANG to right SMG
during distractor presence was modulated by α. Our data
show that interindividual differences in attentional
processing are reflected in changes of effective
connectivity without significant differences in activation
strength of network nodes.},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572) / 111 -
Efficient and Flexible Power Plants (POF3-111)},
pid = {G:(DE-HGF)POF3-572 / G:(DE-HGF)POF3-111},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000372745300013},
pubmed = {pmid:26827815},
doi = {10.1016/j.neuroimage.2016.01.054},
url = {https://juser.fz-juelich.de/record/281916},
}