کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4344571 1296667 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impaired anticipatory control of grasp during obstacle crossing in Parkinson's disease
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Impaired anticipatory control of grasp during obstacle crossing in Parkinson's disease
چکیده انگلیسی

During self-paced walking, people with Parkinson's disease maintain anticipatory control during object grasping. However, common functional tasks often include carrying an object while changing step patterns mid-path and maneuvering over obstacles, increasing task complexity and attentional demands. Thus, the present study investigated the effect of Parkinson's disease on the modulation of grasping force changes as a function of gait-related inertial forces. Subjects with Parkinson's disease maintained the ability to scale and to couple over time their grip and inertial forces while walking at irregular step lengths, but were unable to maintain the temporal coupling of grasping forces compared to controls during obstacle crossing. We suggest that this deterioration in anticipatory control is associated with the increased demands of task complexity and attention during obstacle crossing.


► Impaired anticipatory control of grasp during obstacle crossing in Parkinson's disease.
► Hand dexterity in functional tasks is impaired for people with Parkinson's disease.
► We assessed grasp control to gait-induced inertial force variations.
► Grasping precision declines while walking with irregular steps.
► Increased task complexity of obstacle crossing reduces grasp force coupling.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 516, Issue 2, 16 May 2012, Pages 242–246
نویسندگان
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