How to proper filter an EMG?

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HelpAStudent 2023-6-10

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https://ww2.mathworks.cn/matlabcentral/answers/1981054-how-to-proper-filter-an-emg

评论： Star Strider 2023-6-15

sigtest230504.mat

How can I plot the signal from the file "sigtest230504.mat" in MATLAB with a sampling frequency of 1000Hz and identify any artifacts present in the signal? Once artifacts are detected, please suggest appropriate filtering techniques to remove them.

Furthermore, what physiological information can be extracted from the estimated spectrum, and what parameters are associated with this information? Please calculate at least one parameter in the frequency domain, explain its physiological significance, and provide commentary on the numerical value obtained.

THANK YOU VERY MUCH FOR THE HELP

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HelpAStudent 2023-6-15

The color map of the 2d spectrogram and the 3d ones what can they indicate? Like what I have to search for if I have another biopotential signal?

Star Strider 2023-6-15

The 'spectrogram' plot pspectrum calculates and plots express the power (in decibels) of the signal at each frequency and time.

The waterfall plot indicate the magnitudes (not power, which would be magnitude²) at each frequency and time.

A different biopotential signal would likely have different time-frequency chartacteristics, so that depends on the signal and the context of what you are searching for.

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