% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Abel:17374,
author = {Abel, S. and Huber, W. and Weiller, C. and Amunts, K. and
Eickhoff, S.B. and Heim, S.},
title = {{T}he influence of handedness on hemispheric interaction
during word production: {I}nsights form effective
connectivity analysis},
journal = {Brain Connectivity},
volume = {1},
issn = {2158-0014},
address = {New Rochelle, NY},
publisher = {Liebert},
reportid = {PreJuSER-17374},
pages = {219 - 231},
year = {2011},
note = {Record converted from VDB: 12.11.2012},
abstract = {Overt picture naming causes activation in both left and
right hemispheres as demonstrated by functional magnetic
resonance imaging (fMRI) studies. Unexpectedly, a previous
experiment revealed that there was no difference in brain
lateralization related to handedness. To understand the
mechanisms behind this phenomenon and to investigate the
influence that each hemisphere exerts over the other in more
detail, we analyzed the effective connectivity in the naming
network. More specifically, we examined the impact of
handedness on hemispheric interactions. Four brain regions
activated for correct naming in the previous fMRI experiment
served as volumes of interest: Bilateral fusiform gyrus (FG)
related to visual-semantic processing and bilateral
Brodmann's area (BA) 44 related to phonological processing.
We defined three dynamic causal models (DCMs) representing
different symmetrical connectivity patterns, compared them
using Bayesian model selection, and considered differential
connection strengths. For the majority of 31 participants,
the same model featuring early integration of
visual-semantic processing and independent phonological
processing was optimal. This also held true if
right-handers, left-handers, and ambidexters were considered
as independent groups. For left-handers, the connection of
right FG and right BA 44 was significantly stronger compared
with the other two groups, and it was significantly stronger
than its left-hemisphere equivalent. In right-handers, the
according left-hemisphere connection was significant, but
connectivities were rather symmetrical. These findings
reveal significant and unique right-hemisphere contributions
to word production.},
cin = {INM-1 / INM-2},
ddc = {610},
cid = {I:(DE-Juel1)INM-1-20090406 / I:(DE-Juel1)INM-2-20090406},
pnm = {Funktion und Dysfunktion des Nervensystems},
pid = {G:(DE-Juel1)FUEK409},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22433050},
doi = {10.1089/brain.2011.0024},
url = {https://juser.fz-juelich.de/record/17374},
}