[FieldTrip] imag plv

[Tobias Staudigl]

Dear ft community,

I am looking for an equivalent of imaginary coherence (Nolte, 2004), 
based on the phase-locking value (Lachaux, 1999) rather than coherence.
Fieldtrip supports the following function, which would be exactly what I 
needed:

cfg=[];
cfg.method = 'plv';
cfg.complex = 'imag';
iplv=ft_connectivityanalysis(cfg,freq);

However, I did not find any documentation or reference, and was 
wondering whether it is feasible to use 'imag' together with 'plv'?
Sadaghiani et al. (2012; J Neurosci) calculated imaginary plv in their 
paper like this:

Is this what the ft code effectively does?

Any help appreciated, thanks a lot!
best,
Tobias

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