convert EMG data into opensim inputs

[seyedehmarzieh hosseini]

Hi,

I have a problem with my data file.
I have EMG data for hand tremor and I want to convert this data as a .mot file for using in opensim model.
Can you please advise me about that?

Many thanks,
Marzieh.

[Jan Thomas]

Hi,
You can try the MotoNms toolbox. Good luck!

Jan

[Dimitar Stanev]

The process is straightforward:

In matlab:

0) Make sure to scale the signal by the maximum voluntary contraction so you can get values between [-1, 1]

1) remove DC (optional, because you use band pass)

Code: Select all

 emg = detrend(emg);

2) band pass filtering

https://github.com/RehabEngGroup/MOtoNM ... Filtfilt.m

Code: Select all

emg = ZeroLagButtFiltfilt((1/Fs), [30,300], 2, 'bp', emg );

where Fs is the sampling frequency of the device.

3) rectification

Code: Select all

emg = abs(emg);

4) low pass

Code: Select all

emg = zeroLagButtFiltfilt((1/Fs), 6, 2, 'lp', emg);

Best