Presentation 2000/3/13
Optimal Trajectory and Training in a Task of Human Arm Movements
Kenji TAKAKURA, Yoji UNO,
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Abstract(in English) We investigate trajectory planning for a time-minimizing task in human reaching movements. Using computer simulation, Suzuki et al.confirmed that the minimum-movement-time trajectory concaves toward a body and its velocity profile has two peaks. Suzuki et al.observed in psychophysical experiments that subjects generated roughly straight hand paths with bell-shaped velocity profiles in the time-minimizing, task, but they performed a few reaching trials. It was possible that the subjects could not produce the optimal trajectory owing to the lack of training. In the current work, subjects were asked to continue quick reaching movement for 7days. We found that the subjects always generated roughly straight hand paths with bell-shaped velocity profiles in the time-minimizing task for 7 days. Moreover, we asked other subjects simple point-to-point movements and taught the subjects movement duration after every trial. In the experiments, we found that the subjects always generated roughly straight hand paths with bell-shaped velocity profiles for 7 days. These features can be reproduced by the minimum commanded torque change model which requires the smoothness of motor command.
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Keyword(in English) reaching movement / trajectory planning / performance index / minimum torque change model
Paper # NC99-101
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Committee NC
Conference Date 2000/3/13(1days)
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Registration To Neurocomputing (NC)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Optimal Trajectory and Training in a Task of Human Arm Movements
Sub Title (in English)
Keyword(1) reaching movement
Keyword(2) trajectory planning
Keyword(3) performance index
Keyword(4) minimum torque change model
1st Author's Name Kenji TAKAKURA
1st Author's Affiliation Department of Information and Computer Sciences, Toyohashi University of Technology()
2nd Author's Name Yoji UNO
2nd Author's Affiliation Department of Information and Computer Sciences, Toyohashi University of Technology
Date 2000/3/13
Paper # NC99-101
Volume (vol) vol.99
Number (no) 684
Page pp.pp.-
#Pages 8
Date of Issue