| Mode of hand training determines cortical reorganisation: a randomized controlled study in healthy adults. | |
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MedLine Citation:
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PMID: 20809062 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To evaluate two commonly used forms of hand training with respect to influence on dexterity and cortical reorganization. SUBJECTS: Thirty healthy volunteers (mean age 24.2 years). METHODS: The subjects were randomized to 25 min of shaping exercises or general activity training of the non-dominant hand. The dexterity and the cortical motor maps (number of excitable positions) of the abductor pollicis brevis muscle were evaluated pre- and post-training by the Purdue Peg Board test and transcranial magnetic stimulation, respectively. RESULTS: After shaping exercises the dexterity increased significantly (p < or = 0.005) for both hands, mostly so in the non-dominant hand. The cortical motor map of the abductor pollicis brevis muscle shifted forwardly into the pre-motor area without expanding. After general activity training, no significant improvements in dexterity were found for the non-dominant hand. The cortical motor map of the non-dominant abductor pollicis brevis muscle expanded significantly (p = 0.03) in the posterior (sensory) direction. CONCLUSION: These results indicate that shaping exercises, but not general activity training, increase dexterity of the trained non-dominant hand in parallel with a shift of location of active transcranial magnetic stimulation positions. Shifts of active cortical areas might be important for the interpretation of brain plasticity in common behavioural tasks. |
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Authors:
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Christina Brogårdh; Fredrik W Johansson; Frida Nygren; Bengt H Sjölund |
Publication Detail:
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Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of rehabilitation medicine : official journal of the UEMS European Board of Physical and Rehabilitation Medicine Volume: 42 ISSN: 1651-2081 ISO Abbreviation: J Rehabil Med Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-09-02 Completed Date: 2010-09-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101088169 Medline TA: J Rehabil Med Country: Sweden |
Other Details:
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Languages: eng Pagination: 789-94 Citation Subset: IM |
Affiliation:
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Rehabilitation Medicine, Department of Community Medicine and Rehabilitation, Umeå University, Umeå, Sweden. christina.brogardh@skane.se |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Cerebral Cortex / physiology* Female Functional Laterality / physiology* Hand / physiology* Humans Male Motor Cortex / physiology Motor Skills / physiology Neuronal Plasticity / physiology Transcranial Magnetic Stimulation |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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