Document Detail

Handwriting: 3-D Kinetic Synergies in Circle Drawing Movements.
MedLine Citation:
PMID:  22643028     Owner:  NLM     Status:  Publisher    
The purpose of this study was to investigate central nervous system (CNS) strategies for controlling multi-finger forces during a circle-drawing task. Subjects drew 30 concentric, discontinuous clockwise and counter clockwise circles, at self and experimenter-set paces. The 3-D trajectory of the pen's center of mass and the 3-D forces and moments of force at each contact between the hand and the pen were recorded. Uncontrolled Manifold Analysis was used to quantify the synergies between pen-hand contact forces in radial, tangential and vertical directions. Results showed that synergies in the radial and tangential components were significantly stronger than in the vertical component. Synergies in the clockwise direction were significantly stronger than the counter-clockwise direction in the radial and vertical components. Pace was found to be insignificant under any condition.
Alexander W Hooke; Sohit Karol; Jaebum Park; Yoon Hyuk Kim; Jae Kun Shim
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-5-24
Journal Detail:
Title:  Motor control     Volume:  -     ISSN:  1087-1640     ISO Abbreviation:  -     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-5-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706297     Medline TA:  Motor Control     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Kinesiology, University of Maryland, College Park, MD.
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