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@ARTICLE{Achilles:837067,
author = {Achilles, Elisabeth and Weiss-Blankenhorn, Peter and Fink,
Gereon R. and Binder, Ellen and Price, Cathy J. and Hope,
Thomas M. H.},
title = {{U}sing multi-level {B}ayesian lesion-symptom mapping to
probe the body-part-specificity of gesture imitation skills},
journal = {NeuroImage},
volume = {161},
issn = {1053-8119},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {FZJ-2017-06076},
pages = {94 - 103},
year = {2017},
abstract = {Past attempts to identify the neural substrates of hand and
finger imitation skills in the left hemisphere of the brain
have yielded inconsistent results. Here, we analyse those
associations in a large sample of 257 left hemisphere stroke
patients. By introducing novel Bayesian methods, we
characterise lesion symptom associations at three levels:
the voxel-level, the single-region level (using anatomically
defined regions), and the region-pair level. The results are
inconsistent across those three levels and we argue that
each level of analysis makes assumptions which constrain the
results it can produce. Regardless of the inconsistencies
across levels, and contrary to past studies which implicated
differential neural substrates for hand and finger
imitation, we find no consistent voxels or regions, where
damage affects one imitation skill and not the other, at any
of the three analysis levels. Our novel Bayesian approach
indicates that any apparent differences appear to be driven
by an increased sensitivity of hand imitation skills to
lesions that also impair finger imitation. In our analyses,
the results of the highest level of analysis (region-pairs)
emphasise a role of the primary somatosensory and motor
cortices, and the occipital lobe in imitation. We argue that
this emphasis supports an account of both imitation tasks
based on direct sensor-motor connections, which throws doubt
on past accounts which imply the need for an intermediate
(e.g. body-part-coding) system of representation.},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572)},
pid = {G:(DE-HGF)POF3-572},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:28822751},
UT = {WOS:000415673100009},
doi = {10.1016/j.neuroimage.2017.08.036},
url = {https://juser.fz-juelich.de/record/837067},
}