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@ARTICLE{Niessen:154324,
author = {Niessen, E. and Fink, G. R. and Weiss-Blankenhorn, Peter},
title = {{A}praxia, pantomime and the parietal cortex},
journal = {NeuroImage: Clinical},
volume = {5},
issn = {2213-1582},
address = {[Amsterdam u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2014-03672},
pages = {42 - 52},
year = {2014},
abstract = {Apraxia, a disorder of higher motor cognition, is a
frequent and outcome-relevant sequel of left hemispheric
stroke. Deficient pantomiming of object use constitutes a
key symptom of apraxia and is assessed when testing for
apraxia. To date the neural basis of pantomime remains
controversial. We here review the literature and perform a
meta-analysis of the relevant structural and functional
imaging (fMRI/PET) studies.Based on a systematic literature
search, 10 structural and 12 functional imaging studies were
selected.Structural lesion studies associated pantomiming
deficits with left frontal, parietal and temporal lesions.
In contrast, functional imaging studies associate pantomimes
with left parietal activations, with or without concurrent
frontal or temporal activations. Functional imaging studies
that selectively activated parietal cortex adopted the most
stringent controls.In contrast to previous suggestions,
current analyses show that both lesion and functional
studies support the notion of a left-hemispheric
fronto-(temporal)-parietal network underlying pantomiming
object use. Furthermore, our review demonstrates that the
left parietal cortex plays a key role in pantomime-related
processes. More specifically, stringently controlled
fMRI-studies suggest that in addition to storing motor
schemas, left parietal cortex is also involved in activating
these motor schemas in the context of pantomiming object
use. In addition to inherent differences between structural
and functional imaging studies and consistent with the
dedifferentiation hypothesis, the age difference between
young healthy subjects (typically included in functional
imaging studies) and elderly neurological patients
(typically included in structural lesion studies) may well
contribute to the finding of a more distributed
representation of pantomiming within the motor-dominant left
hemisphere in the elderly},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {333 - Pathophysiological Mechanisms of Neurological and
Psychiatric Diseases (POF2-333) / 89572 - (Dys-)function and
Plasticity (POF2-89572)},
pid = {G:(DE-HGF)POF2-333 / G:(DE-HGF)POF2-89572},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000349667800006},
pubmed = {pmid:24967158},
doi = {10.1016/j.nicl.2014.05.017},
url = {https://juser.fz-juelich.de/record/154324},
}