Hi Gian Marco,
Is there a way to group the data in the classic frequency bands( delta, theta, alpha, beta), or should I check manually basing on the maximun frequency band resolution?
You can use the process "Frequency > Group by time or frequency bands", but you would need a frequency resolution much higher than 2Hz, otherwise, you wouldn't even have one value per frequency ban.
When I export data, it is possible to export only the coherence matrix, but this is a matrix NxN channels, without the information about which frequency coherence is being reported. Is there a way to export the information about coherence each maximum frequency resolution step?
If you look in the coherence .mat file, you can get the frequency vector in the field .Freqs.
To reconstruct the NxN matrix for each frequency bin, see this forum thread:
Moreover, it is possible to see how coherence changes on the scalps, each step of the maximun frequency band resolution, only when 1xN coherence is plotted, but there is not the possibility to do with NxN. Given that I cannot report in a paper the coherence of 1xN plot for each channel, how could I get an image of the global changes in the coherence for each frequency bands?
The popup menus "View as image" and "View as graph" represent the NxN connectivity matrices for one frequency.
The popup menu "View as spectrum" shows all the values at once, but gets really messy if you have too many pairs of signals.
There are currently no menus to represent the full connectivity graph on the anatomy of the subject.
Cheers,
Francois