Oct. 8, 2003 - EMG Websiteearc.eng.niigata-u.ac.jp/lectures/Application/BPES2003_SEMG.pdf · 2 T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram

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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


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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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


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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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


October 8, 2003

-

- ゝ

㍇

- よ

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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


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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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


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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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


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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October 8, 2003

0 0.5time [sec]

Innrevation zone

151413121110987654321

1st-triplet

13th-triplet

Subject:M Y

16-Channel Array Electrode


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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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


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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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


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

Documents

Oct. 8, 2003 - EMG Websiteearc.eng.niigata-u.ac.jp/lectures/Application/BPES2003_SEMG.pdf · 2 T. Kiryu, Niigata University Current Topics in Measurement and Analysis of Surface Electromyogram