Time-frequency analysis of myoelectric signals during dynamic contractions: A comparative study

被引：239

作者：

Karlsson, S ^{[1
]}

Yu, J

Akay, M

机构：

[1] Umea Univ Hosp, Dept Biomed Engn & Informat, S-90185 Umea, Sweden

[2] Fac Hlth Sci, Dept Rehabil Med, S-58185 Linkoping, Sweden

[3] Umea Univ, Dept Math Stat, S-90187 Umea, Sweden

[4] Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 2000年 / 47卷 / 02期

关键词：

Choi-Williams distribution (CWD); continuous wavelet transform (CWT); myoelectric (ME) signal; pseudo Wigner-Ville distribution (PWVD); running windowed exponential distribution (RWED); short-time Fourier transform (STFT); spectral change indicator; time-frequency analysis; Wigner-Ville distribution (WVD);

D O I：

10.1109/10.821766

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

In this paper, we introduce the nonstationary signal analysis methods to analyze the myoelectric (ME) signals during dynamic contractions by estimating the time-dependent spectral moments, The time-frequency analysis methods including the short-time Fourier transform, the Wigner-Ville distribution, the Choi-Williams distribution, and the continuous wavelet transform were compared for estimation accuracy and precision on synthesized and real ME signals, It is found that the estimates provided by the continuous wavelet transform have better accuracy and precision than those obtained with the other time-frequency analysis methods on simulated data sets. In addition, ME signals from four subjects during three different tests (maximum static voluntary contraction, ramp contraction, and repeated isokinetic contractions) were also examined.

引用

页码：228 / 238

页数：11

共 36 条

[11]

Cohen L., 1995, TIME FREQUENCY ANAL

[12]

Coifman R, 1992, Wavelets and Their Applications, P453

[13]

COIFMAN RR, 1992, WAVELETS THEIR APPL, P363

[14] PHYSIOLOGY AND MATHEMATICS OF MYOELECTRIC SIGNALS [J].

DE LUCA, CJ .

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 1979, 26 (06) :313-325

[15] ANALYZING UTERINE EMG - TRACKING INSTANTANEOUS BURST FREQUENCY [J].

DUCHENE, J ;

DEVEDEUX, D ;

MANSOUR, S ;

MARQUE, C .

IEEE ENGINEERING IN MEDICINE AND BIOLOGY MAGAZINE, 1995, 14 (02) :125-132

[16]

Gabor D., 1946, J I ELEC ENGRS PART, V93, P429, DOI [DOI 10.1049/JI-3-2.1946.0074, 10.1049/ji-3-2.1946.0074, 10.1049/JI-3-2.1946.0074]

[17]

Grossmann A., 1990, Wavelets, P2, DOI [10.1007/978-3-642-75988-8_1, DOI 10.1007/978-3-642-97177-8_1]

[18] SHORT-TIME FOURIER-ANALYSIS OF THE ELECTROMYOGRAM - FAST MOVEMENTS AND CONSTANT CONTRACTION [J].

HANNAFORD, B ;

LEHMAN, S .

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 1986, 33 (12) :1173-1181

[19] 2 APPLICATIONS OF WAVELET TRANSFORMS IN MAGNETIC-RESONANCE-IMAGING [J].

HEALY, DM ;

WEAVER, JB .

IEEE TRANSACTIONS ON INFORMATION THEORY, 1992, 38 (02) :840-860

[20] Linear and quadratic time-frequency signal representations [J].

Hlawatsch, F. ;

Boudreaux-Bartels, G. F. .

IEEE SIGNAL PROCESSING MAGAZINE, 1992, 9 (02) :21-67

← 1 2 3 4 →