2005 Fiscal Year Final Research Report Summary
Researches on the dominance of the cerebral left hemisphere in motor control
| Project/Area Number |
16500409
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Sports science
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| Research Institution | Naruto University of Education |
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Principal Investigator |
INUI Nobuyuki Naruto University of Education, College of Education, Professor, 学校教育学部, 教授 (30144009)
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| Project Period (FY) |
2004 – 2005
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| Keywords | Force control / Timing / Visuomotor information / Bimanual action / Bilateral transfer / Cerebral hemisphere / Laterality / Tapping |
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| Research Abstract |
With respect to motor control, scientists have long assumed, because of both clinical findings and neuropsychological studies, that there are interhemispheric asymmetries in the human cerebrum. The left hemisphere has been reported to be dominant for feedforward aspects of motor control as well as for speech processing. On the other hand, the right hemisphere is dominant for closed-loop motor processes, facial recognition, and attentional monitoring. The present report showed experimental evidences for interactions between the cerebral hemispheres in the bimanual and bipedal control of muscle force and movement timing and bilateral transfer of perceptual-motor information for motor skill. First, this report showed the asymmetrical control of force and the symmetrical control of timing in bilateral simultaneous foot movements. Second, the report showed the entrainment of force in bimanual simultaneous finger movements with asymmetrical forces. Third, the author revealed the lateralization of transfer of visuomotor information between the right and left hands. During unimanual hand movements with visual feedback, whereas positive transfers from the left hand to the right hand were observed for right-handers, left-handers showed the opposite direction of positive transfers. Thus, because the hemispheres differ in the kinds of perceptual-motor information they most effectively encode, they complement each other.
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Research Products
(8 results)
