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@ARTICLE{Binder:829124,
author = {Binder, Ellen and Dovern, Anna and Hesse, Maike and Ebke,
Markus and Karbe, Hans and Saliger, Jochen and Fink, Gereon
R. and Weiss-Blankenhorn, Peter},
title = {{L}esion evidence for a human mirror neuron system},
journal = {Cortex},
volume = {90},
issn = {0010-9452},
address = {Paris},
publisher = {Elsevier Masson},
reportid = {FZJ-2017-02931},
pages = {125 - 137},
year = {2017},
abstract = {More than two decades ago, the mirror neuron system (MNS)
was discovered in non-human primates: Single-cell recordings
detected visuo-motor neurons that discharged not only when
the monkey performed an action, but also when it observed
conspecifics performing the same action. It has been
proposed that a fronto-parietal circuitry constitutes the
human homolog of the MNS. However, the functional role of a
human MNS (i.e., whether it is functionally necessary for
imitation or action understanding) to date remains
controversial. We here examined how patients with left
hemisphere (LH) stroke imitate, recognize, and comprehend
intransitive meaningful limb actions. In particular, we
investigated whether apraxic patients with lesions affecting
key nodes of the putative human MNS show deficits in action
imitation, action recognition, and action comprehension to a
similar degree – as predicted by the MNS hypothesis.
Behavioral results showed that patients with apraxia (n =
18) indeed performed significantly worse in all three motor
cognitive tasks compared to non-apraxic patients (n = 26)
and healthy controls (n = 19), whose performance did not
differ significantly. Lesions of the apraxic (compared to
non-apraxic) patients with LH stroke affected more
frequently key regions of the putative human MNS, i.e., the
left inferior frontal, superior temporal, and supramarginal
gyri as well as the inferior parietal lobe (p < .01, false
discovery rate – FDR-corrected). Albeit largely
overlapping, voxel-based lesion-symptom mapping (VLSM)
revealed that deficits in gesture comprehension were mainly
associated with lesions of more anterior parts of the MNS,
whereas lesions located more posteriorly mainly resulted in
gesture imitation deficits (p < .05, FDR-corrected). Our
clinical data support key hypotheses derived from the notion
of a human MNS: LH lesions to the MNS core regions affected
– critically and to a similar extent – the imitation,
recognition, and comprehension of meaningful actions.},
cin = {INM-3},
ddc = {570},
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},
UT = {WOS:000403029900011},
pubmed = {pmid:28391066},
doi = {10.1016/j.cortex.2017.02.008},
url = {https://juser.fz-juelich.de/record/829124},
}