[Eeglablist] channel coherence

[Johannes Sarnthein]

Hi Kevin,
You can calculate the coherence spectrum with a script of the type below.
Best,
Johannes

ch1      = 6;
ch2      = 49;
window   = 2*EEG.srate; % create 2 sec epochs
noverlap = window/2;    % overlap epochs by 50% for smoothing
nfft     = window*2;    % zero-padding factor 2 for smoothing
fs       = EEG.srate;

[Cxy,F] = mscohere(EEG.data(ch1,:),EEG.data(ch2,:),window,noverlap,nfft,fs);

figure;
plot(F,Cxy)


2008/1/28, Kevin Whittingstall <kevin.whittingstall at tuebingen.mpg.de>:
>
>  Hello there,
>
>                  I am trying to calculate the coherence between two
> channels of continuous data (that is, there are no 'epochs'.  Any
> suggestions on how to carry this out?
>
> Thanks,
> Kevin
>
>
> --
> --------------------------------------------
> Kevin Whittingstall, Ph.D.
> Max Planck Institute for Biological Cybernetics
> Spemannstraße 38
> 72076 Tübingen
> Phone: +49-7071-6011700
>
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