Presentation 1997/3/17
Changes in Muscle Activation during Motor Learning
Rieko OSU, Kazuhisa DOMEN, Hiroaki GOMI, Toshinori YOSHIOKA, Hiroshi IMAMIZU, Mitsuo KAWATO,
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Abstract(in English) We observed changes of muscle activation and hand trajectories during motor learning. Subjects were asked to learn planar reaching movement which included a via-point while EMG and position data were recorded. Arm stiffness was estimated from the sum of flexor muscle torque and extensor muscle torque reconstructed from EMG. Joint torque was also calculated from hand position data. As learning proceeded, muscle activation decreased, although, in some case, there was little change in the joint torque profile. The results suggest that learning enables us to realize similar trajectories with lower arm stiffness.
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Keyword(in English) motor learning / stiffness / EMG
Paper # NC96-139
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Committee NC
Conference Date 1997/3/17(1days)
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Registration To Neurocomputing (NC)
Language JPN
Title (in Japanese) (See Japanese page)
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Title (in English) Changes in Muscle Activation during Motor Learning
Sub Title (in English)
Keyword(1) motor learning
Keyword(2) stiffness
Keyword(3) EMG
1st Author's Name Rieko OSU
1st Author's Affiliation Kawato Dynamic Brain Project, JST()
2nd Author's Name Kazuhisa DOMEN
2nd Author's Affiliation Dept. of Rehabilitation Medicine, Keio University School of Medicine
3rd Author's Name Hiroaki GOMI
3rd Author's Affiliation NTT Basic Research Labs.
4th Author's Name Toshinori YOSHIOKA
4th Author's Affiliation Kawato Dynamic Brain Project, JST
5th Author's Name Hiroshi IMAMIZU
5th Author's Affiliation Kawato Dynamic Brain Project, JST
6th Author's Name Mitsuo KAWATO
6th Author's Affiliation ATR Human Information Processing Res. Labs.
Date 1997/3/17
Paper # NC96-139
Volume (vol) vol.96
Number (no) 583
Page pp.pp.-
#Pages 8
Date of Issue