[Eeglablist] channel spectra & maps

[Arnaud Delorme]

Dear Patrick,

you may retrieve these values on the command line. After plotting the spectrum, type "eegh" on the Matlab command line. You should see something like

figure; pop_spectopo(EEG, 1, [-1000      1992.1875], 'EEG' , 'percent', 15, 'freq', [6 10 22], 'freqrange',[2 25],'electrodes','off');

You may add output to the function pop_spectopo (see help pop_spectopo)

figure; [spectrum frequencies] = pop_spectopo(EEG, 1, [-1000      1992.1875], 'EEG' , 'percent', 15, 'freq', [6 10 22], 'freqrange',[2 25],'electrodes','off');

Then you may export them to an ascii file for example and open it in Excel, Statistica, SPSS, R, etc...

save('-ascii', 'myfile.txt', 'spectrum');

In this file, there are as many rows as data channels and as many columns as frequencies.
Hope this helps,

Arno

On May 7, 2012, at 3:55 AM, Schelenz, Patrick David wrote:

> Hi,
>  
> i am looking for help for spectral analysis with EEGlab.
>  
> I analyzed my data and looked at spectral analysis (plot-> channel spectra & maps).
> Unfortunately I can’t get concrete values to do a statistical analysis. Therefore, no comparison between groups is possible.
> So my question is: how can I get these values?
>  
> Greetings
>  
> Patrick
> _______________________________
> 
> Dipl.-biol. Patrick David Schelenz
> Klinik für Psychiatrie, Psychotherapie und Psychosomatik
> Universitätsklinikum der RWTH Aachen
> Pauwelsstr. 30
> 52074 Aachen
> Tel.  0241 - 80 85580
>  
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