http://journals.humankinetics.com/mc-current-issue/mc-volume-17-issue-3-july/effect-of-visual-feedback-on-brain-activation-during-motor-tasks-an-fmri-study
This
study examined the effect of visual feedback and force level on the
neural mechanisms responsible for the performance of a motor task. We
used a voxelwise fMRI approach to determine the effect of visual
feedback (with and without) during a grip force task at 35% and 70% of
maximum voluntary contraction. Two areas (contralateral rostral premotor
cortex and putamen) displayed an interaction between force and feedback
conditions. When the main effect of feedback condition was analyzed,
higher activation when visual feedback was available was found in 22 of
the 24 active brain areas, while the two other regions (contralateral
lingual gyrus and ipsilateral precuneus) showed greater levels of
activity when no visual feedback was available. The results suggest that
there is a potentially confounding influence of visual feedback on
brain activation during a motor task, and for some regions, this is
dependent on the level of force applied.
Keywords: fMRI; motor control; visual feedback
Keywords: fMRI; motor control; visual feedback
Authors: Jeremy W. Noble, Janice J. Eng, Lara J. Boyd
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