[FieldTrip] finding gradiometer

[Ricardo Moura]

Dear all,
I am trying to run a source localization analysis of eeg oscillatory
activity. My data was recorded by a BrainAmp, and I exported using the
brainvision analyzer.

Since I am very new to fieldtrip, I have a (probably very basic) doubt, and
would be really glad if someone could help me.

First, when creating the leadfield, it asks for the gradiometer (cfg.grad),
but I didnt figure out where I can find it. I checked the "localizing
oscillatory sources using beamformer techniques" tutorial, and it seems
that it can be recovered as an output of the "ft_freqanalysis" (since there
is a "cfg.grad = freqPost.grad" definition), but I didnt manage to have it,
even running the same parameters as in the tutorial.

Here is how I am doing the oscillatory analysis.
cfg = [];
cfg.method = 'wavelet';
cfg.width = 2;
cfg.output = 'pow';
cfg.foi = 2:2:20;
cfg.toi = -0.5:0.05:1;
TFR = ft_freqanalysis(cfg, dataEEGmax);

Thanks a lot in advance,
Best regards,
Ricardo
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