KMID : 0372919850060010019
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Journal of Biomedical Engineering Research 1985 Volume.6 No. 1 p.19 ~ p.30
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Frequency Analysis of EMG Signals using Power Spectral Density
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Abstract
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This paper describes the EMG signals in frequency domain using power spectral density, The changes in the moan frequency can represent the energy distribution which results from changing in load before and during fatigue. Most of EMG signal power spectrum is located between 10 and 200Hz. Shifts of the high-energy regions of the power spectra can be inferred from the changes in the mean frequency. If the load is increased without fatigue-ocurring, the high frequency regions have more energy than the low frequency regions. And if load is increased during fatigue, the low frequency regions have more energy than the high frequency regions.
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