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Title: Effect of visual information on step-tracking movements in patients with intention tremor due to multiple sclerosis
Authors: Feys, Peter
Helsen, Werner
Liu, X
Lavrysen, Ann
Loontjens, V
Nuttin, Bart
Ketelaer, P #
Issue Date: Oct-2003
Series Title: Multiple sclerosis (Houndmills, Basingstoke, England) vol:9 issue:5 pages:492-502
Abstract: The effect of visual information on step-tracking movements was studied in 18 patients with intention tremor due to multiple sclerosis (MS) and 15 healthy controls. Parricipants performed a slow wrist step-tracking task with stationary targets under five visual feedback conditions. The display of the target and movement cues was selectively withdrawn to examine the effects of visual information on intention tremor and movement accuracy. Results showed that intention tremor was most pronounced when visual display of both target and movement cues was available. Withdrawing visual information of the limb movement reduced tremor more than withdrawing the visual display of the target cues. Both the patient and control group was less accurate when the display of limb movement was occluded. Patients, however, were more dependent on visual information of the limb movement for accurate motor performance than healthy controls. When the visual display of the limb movement was partially occluded between or near to the targets, tremor decreased without deterioration of movement accuracy.
URI: 
ISSN: 1352-4585
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Movement Control & Neuroplasticity Research Group
Centre for Developmental Psychology (-)
Research Group Experimental Neurosurgery and Neuroanatomy
# (joint) last author

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