It is generally assumed that movements of a part of the body (e.g., hands) are simulated in motor imagery (MI) tasks. This is evidenced by a linear increase in reaction time as a function of the angular rotation of the stimulus. Under the assumption that MI plays a critical role for anticipatory motor planning, which is known to be impaired in individuals with right hemiparetic cerebral palsy (right HCP; left congenital brain damage), but to a lesser extent in individuals with left HCP, we hypothesized that MI is impaired in the participants with right HCP. In the present study, 8 participants with right and 11 participants with left congenital brain damage and 9 neurologically healthy controls were presented with two MI tasks to study this supposed relation between hemispheric processes and behaviour. Participants were instructed to make a laterality judgment on the basis of displayed pictures of hands (either holding a hammer or not) presented in different orientations. For both the control group and the left HCP group, a linear increase in reaction time as a function of angle of rotation was found. Interestingly, no such relationship was observed for the right HCP group, suggesting a disorder in MI for these participants. Collectively, these findings provide new insights into the cause of the anticipatory planning deficits in right HCP individuals.
%0 Journal Article
%1 Mutsaarts2007
%A Mutsaarts, Marcel
%A Steenbergen, Bert
%A Bekkering, Harold
%D 2007
%J Neuropsychologia
%K Adolescent; Adult; Cerebral Palsy; Discrimination Learning; Dominance, Cerebral; Female; Functional Laterality; Hemiplegia; Humans; Imagination; Male; Orientation; Pattern Recognition, Visual; Psychomotor Performance; Reaction Time
%N 4
%P 853--859
%R 10.1016/j.neuropsychologia.2006.08.020
%T Impaired motor imagery in right hemiparetic cerebral palsy.
%U http://dx.doi.org/10.1016/j.neuropsychologia.2006.08.020
%V 45
%X It is generally assumed that movements of a part of the body (e.g., hands) are simulated in motor imagery (MI) tasks. This is evidenced by a linear increase in reaction time as a function of the angular rotation of the stimulus. Under the assumption that MI plays a critical role for anticipatory motor planning, which is known to be impaired in individuals with right hemiparetic cerebral palsy (right HCP; left congenital brain damage), but to a lesser extent in individuals with left HCP, we hypothesized that MI is impaired in the participants with right HCP. In the present study, 8 participants with right and 11 participants with left congenital brain damage and 9 neurologically healthy controls were presented with two MI tasks to study this supposed relation between hemispheric processes and behaviour. Participants were instructed to make a laterality judgment on the basis of displayed pictures of hands (either holding a hammer or not) presented in different orientations. For both the control group and the left HCP group, a linear increase in reaction time as a function of angle of rotation was found. Interestingly, no such relationship was observed for the right HCP group, suggesting a disorder in MI for these participants. Collectively, these findings provide new insights into the cause of the anticipatory planning deficits in right HCP individuals.
@article{Mutsaarts2007,
abstract = {It is generally assumed that movements of a part of the body (e.g., hands) are simulated in motor imagery (MI) tasks. This is evidenced by a linear increase in reaction time as a function of the angular rotation of the stimulus. Under the assumption that MI plays a critical role for anticipatory motor planning, which is known to be impaired in individuals with right hemiparetic cerebral palsy (right HCP; left congenital brain damage), but to a lesser extent in individuals with left HCP, we hypothesized that MI is impaired in the participants with right HCP. In the present study, 8 participants with right and 11 participants with left congenital brain damage and 9 neurologically healthy controls were presented with two MI tasks to study this supposed relation between hemispheric processes and behaviour. Participants were instructed to make a laterality judgment on the basis of displayed pictures of hands (either holding a hammer or not) presented in different orientations. For both the control group and the left HCP group, a linear increase in reaction time as a function of angle of rotation was found. Interestingly, no such relationship was observed for the right HCP group, suggesting a disorder in MI for these participants. Collectively, these findings provide new insights into the cause of the anticipatory planning deficits in right HCP individuals.},
added-at = {2014-07-19T20:49:42.000+0200},
author = {Mutsaarts, Marcel and Steenbergen, Bert and Bekkering, Harold},
biburl = {https://www.bibsonomy.org/bibtex/293ae980d36a9f010ba8303d7cf1812f8/ar0berts},
doi = {10.1016/j.neuropsychologia.2006.08.020},
groups = {public},
interhash = {3121c465fb36d0c14332767a802a0d1f},
intrahash = {93ae980d36a9f010ba8303d7cf1812f8},
journal = {Neuropsychologia},
keywords = {Adolescent; Adult; Cerebral Palsy; Discrimination Learning; Dominance, Cerebral; Female; Functional Laterality; Hemiplegia; Humans; Imagination; Male; Orientation; Pattern Recognition, Visual; Psychomotor Performance; Reaction Time},
month = Mar,
number = 4,
pages = {853--859},
pii = {S0028-3932(06)00335-6},
pmid = {17046033},
timestamp = {2014-07-19T20:49:42.000+0200},
title = {Impaired motor imagery in right hemiparetic cerebral palsy.},
url = {http://dx.doi.org/10.1016/j.neuropsychologia.2006.08.020},
username = {ar0berts},
volume = 45,
year = 2007
}