[FieldTrip] Connectivity analysis with powcorr_ortho

Matthias Treder matthias.treder at gmail.com
Wed Oct 15 20:56:17 CEST 2014

Hello FieldTrippers,

I want to do a envelope-based connectivity analysis of resting state MEG
following the regime of Hipp. The respective method is implemented in
ft_connectivityanalysis as powcorr_ortho.

Like in the Hipp paper, I am first doing a wavelet analysis on the sensor
level (10 Hz for me).
I eventually want to do source-space analysis - currently I stay in sensor
space, however.
I keep the complex Fourier coefficients (cfg.output     = 'fourier') and
the result is:

     label: {204x1 cell}
           dimord: 'rpttap_chan_freq_time'
             freq: [10 20]
             time: [1x57400 double]
    fourierspctrm: [4-D double]
        cumtapcnt: [1 1]
             grad: [1x1 struct]
              cfg: [1x1 struct]

Looking in ft_connectivityanalysis in line 697 the function requires either
a field .mom or the structure of the data has to be rpttap_chan_freq, but I
have sensor-level time-frequency data.

Any idea how to fix my analysis?

Thanks a lot !
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20141015/e7a48133/attachment-0001.html>

More information about the fieldtrip mailing list