Document Detail

Motor strategies and motor programs during an arm tapping task in adults with Down Syndrome.
MedLine Citation:
PMID:  23274643     Owner:  NLM     Status:  MEDLINE    
Slow movements and atypical patterns of muscle activation are well-known features of Down Syndrome (DS). Some studies attribute these features to a deficit in voluntary motor commands and preprogramming of actions, that lead subjects with DS to be more reliant on feedback control. In the present study, we evaluated the movement strategies of 13 adult subjects with DS and of 22 age-matched controls (N) during an arm tapping task. By means of quantitative motion analysis, our aim was to describe movement differences in DS respect to typical population and provide a means of interpreting such differences in terms of the underlying different control processes. The results highlighted distinct motor strategies for the tapping task in the two groups, with DS relying more on the trunk motion and N relying on the elbow motion to accomplish the task. Furthermore, DS corrected their wrist trajectory more than N subjects, giving shape to multi-peaked velocity profiles. Longer duration of the trials and a higher index of curvature were found in DS. The results suggest that subjects with DS rely more on feedback control, whereas they have problems with movement planning and feed-forward control. The different strategy operated by subjects with DS leads to a different task performance.
Sara Laura Vimercati; Manuela Galli; Chiara Rigoldi; Andrea Ancillao; Giorgio Albertini
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Publication Detail:
Type:  Journal Article     Date:  2012-12-29
Journal Detail:
Title:  Experimental brain research     Volume:  225     ISSN:  1432-1106     ISO Abbreviation:  Exp Brain Res     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-03-04     Completed Date:  2013-09-05     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0043312     Medline TA:  Exp Brain Res     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  333-8     Citation Subset:  IM    
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MeSH Terms
Arm / physiopathology*
Case-Control Studies
Down Syndrome / pathology*,  physiopathology*
Elbow Joint / innervation
Functional Laterality / physiology
Movement / physiology*
Psychomotor Performance / physiology*
Statistics, Nonparametric
Time Factors
Wrist Joint / innervation
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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