[FieldTrip] Resting State EEG Connectivity

[Elene Beitia Loinaz]

Hi Fieldtripers,

We are trying to perform a conectivity analysis using source reconstructed
data. We have seen that *ft_connectivityanalysis *can be calculated using
the output of *ft_freqanalysis *or *ft_sourceanalysis. *Someone knows which
are the benefits of using the results obtain in *ft_sourceanalysis *to
perform the connectivity analysis?

Furthemore, we have problems when we compute the choerence approach with
the source reconstructed data.

*Our code:*

cfg           = [];
cfg.method    = 'coh'
coh           = ft_connectivityanalysis(cfg, beamformer);

*The error that we obtain is:*
Out of memory. Type "help memory" for your options.

Error in univariate2bivariate (line 314)
         data.crsspctrm = (transpose(mom)*conj(mom))./nrpt;

Error in ft_connectivityanalysis (line 449)
[data, powindx, hasrpt] = univariate2bivariate(data, 'mom', 'crsspctrm',
dtype, 'cmb', cfg.refindx,'keeprpt', 0);

This segment of code has been concluded following the tutorials below:
http://www.fieldtriptoolbox.org/tutorial/networkanalysis/
http://www.fieldtriptoolbox.org/tutorial/connectivity/
http://www.fieldtriptoolbox.org/workshop/meg-uk-2015/fieldtrip-connectivity-demo/

Thank you in advanced,

Waiting for your answer.
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https://doi.org/10.1371/journal.pcbi.1002202