Prehension synergies and hand function in early-stage Parkinson’s disease
نویسندگان
چکیده
منابع مشابه
Prehension synergies in three dimensions.
The goal of this study was to investigate the conjoint changes of digit forces/moments in 3 dimensions during static prehension under external torques acting on the object in one plane. The experimental paradigm was similar to holding a book vertically in the air where the center of mass of the book is located farther from the hand than the points of digit contacts. Three force and 3 moment com...
متن کاملPrehension synergies: trial-to-trial variability and principle of superposition during static prehension in three dimensions.
We performed three-dimensional analysis of the conjoint changes of digit forces during prehension (prehension synergies) and tested applicability of the principle of superposition to three-dimensional tasks. Subjects performed 25 trials at statically holding a handle instrumented with six-component force/moment sensors under seven external torque conditions; -0.70, -0.47, -0.23, 0.00, 0.23, 0.4...
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Recently, the need for more secure identity verification systems has driven researchers to explore other sources of biometrics. This includes iris patterns, palm print, hand geometry, facial recognition, and movement patterns (hand motion, gait, and eye movements). Identity verification systems may benefit from the complexity of human movement that integrates multiple levels of control (neural,...
متن کاملNeural bases of hand synergies
The human hand has so many degrees of freedom that it may seem impossible to control. A potential solution to this problem is "synergy control" which combines dimensionality reduction with great flexibility. With applicability to a wide range of tasks, this has become a very popular concept. In this review, we describe the evolution of the modern concept using studies of kinematic and force syn...
متن کاملVisuomotor impairment in early-stage Alzheimer's disease: changes in relative timing of eye and hand movements.
Although memory complaints are one of the first clinical symptoms in patients with Alzheimer's disease (AD), damage to the parietal lobe, a key structure in the visuomotor coordination network, was recently identified in early-stage AD. The aim of this study was to quantify visuomotor coordination in patients with probable AD and to compare their visuomotor performance with controls using five ...
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ژورنال
عنوان ژورنال: Experimental Brain Research
سال: 2014
ISSN: 0014-4819,1432-1106
DOI: 10.1007/s00221-014-4130-7