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T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
3C2-1 ゝ よ リ
3C2-2
3C2-3
NTT ┷3C2-4
NTT ┷
第18回生体・生理工学シンポジウム,Oct. 8, 2003
T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
ゝ よ リ
Current Topics in Measurement and Analysis ofSurface Electromyogram
木竜 徹Tohru Kiryu
新潟大学大学院自然科学研究科Graduate School of Science and Technology, Niigata University
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T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
身体の運動機能
コントロール
BioCybernetics
自律神経系
循環系
神経筋系
筋骨格系
T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
d
• サイバネティックス– ノバート・ウイナー博士– 生物と機械との通信と制御– ボストン・アーム
• 手の動きをみる– 筋肉の活動を測る– 筋肉の活動から手の動きをみる1948
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T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
筋肉の活動を電極で計測して,人工の手を動かす.
Museum of Science (1991)
おもちゃの人工の手
T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
-
- ゝ
㍇
- よ
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T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
一定随意収縮時から動的運動時へ
動的運動時での表面筋電図から正しい情報を取り出すには
- アーチファクトの混入を防ぐ
- 表面電極の電極位置
- 非定常な生体信号の取り扱い
Dynamic Movement
T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
tibialis anterior muscle
Myoelectric Signal
計測対象の物理的・生理的特性
計測装置の振幅・周波数特性
計測対象と計測装置とのインタフェース
ゝ よ
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T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
ゝ
解剖学的構造に注意
a b
nerve cells
myofibers
MUAP
differential amplifier
endplate
表面電極 表面筋電図
T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
アクティブ電極 多チャネルアレイ電極
Results of the SENIAM project, Eds. H. J. Hermens et. al, SENIAM Deliverable8, Roessingh Research and Development b. v. (1999)
皮膚上に貼付して,電気的変化をとらえる
形状電子回路
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T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
4bar electrode
−
+
−
+
−
+
−
+
バッファアンプを内蔵
アレイ状で多チャネル
+-
R1 R2
R1
R2
T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
0 10 100 1000frequency [Hz]
gain [dB]
-10
-20
0.2
1.0
(a) 深さ方向のフィルタ
D
(c) 増幅器のフィルタfrequency [Hz]
gain [dB]
60
40
20 10 100 1000
(b) 双極導出によるフィルタ
-40
0
gain [dB]10
D=10[mm]D=20[mm]
frequency [Hz]
10 100 1000
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T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
0 0.5time [sec]
Innrevation zone
151413121110987654321
1st-triplet
13th-triplet
Subject:M Y
16-Channel Array Electrode
T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
よ
1time
[sec]0.2 0.4 0.6 0.800
500400300200100
[Hz]
0
-480
480[µV]
1time
[sec]0.2 0.4 0.6 0.800
500400300200100
[Hz]1
time[sec]0.2 0.4 0.6 0.800
500400300200100
[Hz]- Short-Term Fourier STFT
- Wigner-Ville WV
- Wavelet WT
- Matching Pursuit MP
時間周波数解析
┘
さ
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T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
Ⅴ
ゝ よ
Static Dynamic
???
筋活動の計測・解析はツールとなった
何に応用できるのか
T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
Autonomic Nervous Systemfor Continuing Physical Activity
Motivation for Exercise
Proprioception
Brain
Muscles
Visual System
Somatic Sensors
Vestibular System
for Controlling ExerciseNeuromuscular system
Motor Command
Energy Metabolismfor Continuing Exercise
time-scalelong
short
さ ┞
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T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
1. Monitoring Muscles in Motion, Advancements in analyzing dynamicEMG data, Guest Ed. P. Bonato, IEEE EMBS Magazine, Vol. 20, No.6, 29/143 (2001)
2. SENIAM (Surface EMG for Non-Invasive Assessment of Muscles)Project
3. European Recommendations for Surface Electromyography
T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram
October 8, 2003
1. SENIAM (Surface EMG for Non-Invasive Assessment ofMuscles) Project
European Recommendations for Surface ElectroMyography http://isek.bu.edu/publications/2-1998/article4.htm
2. ISEK (International Society of Electrophysiology andKinesiology) http://isek.bu.edu/
3. EMG Website http://earc.bsp.bc.niigata-u.ac.jp/emg.html
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