[FieldTrip] average power

[Tzvetan Popov]

Hi Brittany,
in addition to Katrin’s suggestions you can also rug ft_freqanalysis with cfg.foi = [4:1:30];, and then call ft_selectdata twice. Once with cfg.frequency = [4 7]; cfg.avgoverfreq = ‘yes’; and accordingly for your other freq band of interest.
best
tzvetan


> hey Brittany, I am far from being a fieldtrip profi, but as far as I can get you can either use 
> ft_freqgrandaverage and average over frequencies (cfg.parameter='freg'), or you precise cfg.avgoverfreq      = 'yes' in the  ft_freqstatistics. Of course you could also change the steps of ft_freqanalysis to bigger steps... (for example cfg.foi          = 7:1:31 for analysis from 7 to 31 in steps of 1 hertz
> 
> 
> 
> cheers k
> 
> 
> 2014-11-14 0:57 GMT+01:00 Brittany Alperin <balperin07 at gmail.com>:
> Hello
> 
> I'm using mtmfft and want the average theta power. I was under the impression that (cfg.foilim = [4 7];) would give me the average of the power between 4 and 8 Hz, however my output is in .5 Hz steps. Am I missing something?
> 
> Also, if I can get the average output rather than stepwise, is there a way that I can get several bands in one pass. For example [4 7] for theta and [12 30] for beta?
> 
> Thanks,
> Brittany
> 
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