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Paper Abstract and Keywords
Presentation 2012-11-16 13:00
Estimation of hand position from EMG signals using musculo-skeletal model
Toshihiro Kawase (Res. Inst. Natl. Rehab. Cent.), Yasuharu Koike (Titech), Kenji Kansaku (Res. Inst. Natl. Rehab. Cent.) MBE2012-49
Abstract (in Japanese) (See Japanese page) 
(in English) We have developed a Brain-Machine Interface based Occupational Therapy Assist Suit (BOTAS), which estimated user’s intention from patterns of EEG signals to drive registered movements. However, these methods needed several-seconds delay to initiate the motion, and number of the motion patterns was limited. In this study, we developed a new method to estimate the user’s arm position utilizing surface EMG signals from arm muscles to control the assist suit, in which the user’s intention was reflected. Our newly developed method estimates flexion/extension angles of a shoulder and an elbow at a mechanical equilibrium point of a musculo-skeletal system from EMG signals. We made a mathematical model of a musculo-skeletal system of an upper arm and derived a formula to calculate the angles from the user’s EMG signals with the model. EMG signals were recorded from 8 muscles of an upper arm. The method succeeded in estimating the joint angles of the subjects (correlation between measured and estimated angles in three subjects: $0.76 \pm 0.12$ for shoulder and $0.77 \pm 0.079$ for elbow). Combining this method and our BMI method will make hybrid control with EMG and EEG possible.
Keyword (in Japanese) (See Japanese page) 
(in English) Exoskeleton / Electromyogram / Musculoskeletal model / / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 297, MBE2012-49, pp. 21-24, Nov. 2012.
Paper # MBE2012-49 
Date of Issue 2012-11-09 (MBE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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Conference Information
Committee MBE NC  
Conference Date 2012-11-16 - 2012-11-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) BCI/BMI, NC and MBE 
Paper Information
Registration To MBE 
Conference Code 2012-11-MBE-NC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Estimation of hand position from EMG signals using musculo-skeletal model 
Sub Title (in English)  
Keyword(1) Exoskeleton  
Keyword(2) Electromyogram  
Keyword(3) Musculoskeletal model  
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1st Author's Name Toshihiro Kawase  
1st Author's Affiliation Research Institute of National Rehabilitation Center for Persons with Disabilities (Res. Inst. Natl. Rehab. Cent.)
2nd Author's Name Yasuharu Koike  
2nd Author's Affiliation Solutions Research Laboratory, Tokyo Institute of Technology (Titech)
3rd Author's Name Kenji Kansaku  
3rd Author's Affiliation Research Institute of National Rehabilitation Center for Persons with Disabilities (Res. Inst. Natl. Rehab. Cent.)
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Speaker Author-1 
Date Time 2012-11-16 13:00:00 
Presentation Time 25 minutes 
Registration for MBE 
Paper # MBE2012-49 
Volume (vol) vol.112 
Number (no) no.297 
Page pp.21-24 
#Pages
Date of Issue 2012-11-09 (MBE) 


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