Units powspctrm

[Martin Bleichner]

Hello together,

What units does the powspctrm have?
Starting with an EEG signal in microvolts and computing the powerspectrum
using freqanalysis what are the units of powspctrm?
I tried to figure it out on my own but I am stuck somehow.

Here some example code

cfg=[];
cfg.method='mtmfft';
cfg.output='pow';
cfg.pad ='maxperlen'
cfg.foilim=[1 130]
cfg.taper='hanning'
cfg.channel=1
cfg.keeptrials='no'

R=ft_freqanalysis(cfg,data);

I am interested in the units of R.powspctrm

Thanks
Martin

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