Time Frequency Analysis!

[Christian Hesse]

Hi Muthuraman,

> One more question regarding the Time frequency Analysis, i have EMG
> data of 24000 data points with a sampling frequeny of 800Hz(30
> seconds of continous data). I would like to do the Timefrequency
> analysis for this data and to see the power for the whole 30 seconds

use preprocessing to get the EMG data into a single 30s trial (if you
want to analyze the rectified EMG, then do the rectification in
preprocessing), then use frequanalysis with

cfg.method = 'mtmfft';
cfg.output = 'pow';

this should give you the power spectrum of your EMG data over the
entire 30 second period.

Regards,
Christian


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Christian Hesse, PhD, MIEEE

F.C. Donders Centre for Cognitive Neuroimaging
P.O. Box 9101
NL-6500 HB Nijmegen
The Netherlands

Tel.: +31 (0)24 36 68293
Fax: +31 (0)24 36 10989

Email: c.hesse at fcdonders.ru.nl
Web: www.fcdonders.ru.nl
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