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@ARTICLE{Baak:202833,
author = {Baak, B. and Bock, O. and Dovern, A. and Saliger, J. and
Karbe, H. and Weiss-Blankenhorn, Peter},
title = {{D}eficits of reach-to-grasp coordination following stroke:
{C}omparison of instructed and natural movements},
journal = {Neuropsychologia},
volume = {77},
issn = {0028-3932},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2015-04992},
pages = {1 - 9},
year = {2015},
abstract = {The present work evaluates whether stroke-induced deficits
of reach-to-grasp movements, established by typical
laboratory paradigms, transfer unconditionally to more
natural situations.Sixteen patients with a stroke to the
motor-dominant left hemisphere and 16 age- and
gender-matched healthy control subjects executed grasping
movements with their left (ipsilesional, non-dominant) hand.
All movements started in the same position, were aimed at
the same object positioned in the same location, and were
followed by forward displacement of that object along the
same path. Twenty movements were performed as a repetitive,
externally triggered task executed for their own sake
(context L, as in typical laboratory tasks). Twenty
movements were performed as part of a self-initiated action
sequence aimed at winning a reward (context E, similar to
many everyday situations). The kinematics and dynamics of
the transport, grasp and manipulation component of each
reach-to-grasp movement were quantified by 41
parameters.Analyses of variance yielded a significant effect
of Context for 29 parameters, a significant effect of Group
for 9 parameters (mostly related to the coupling of hand
transport and grip aperture), and a significant interaction
for 5 parameters (all related to the coupling of hand
transport and grip aperture). The interaction reflected the
fact that stroke patients' movement parameters were more
abnormal in context E than in context L.Our data indicate
that unilateral stroke degrades the grasp-transport
coupling, and that stroke-related motor deficits may be more
pronounced in a natural than in a laboratory context. Thus,
for stroke patients, assessments and rehabilitation regimes
should mainly use activities that are as natural as
possible.},
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},
UT = {WOS:000363815500001},
doi = {10.1016/j.neuropsychologia.2015.07.018},
url = {https://juser.fz-juelich.de/record/202833},
}