coherence and phase locking values

[Hsu, Shen-Mou]

Dear Users,

 I have a question regarding the differences among the following phase-synchronization measures for channel pairs.

1. coherence, specified in the fieldtripbox, also called ERLCOH in the EEGlab toolbox 

2.ERPCOH, specified in the EEGlab toolbox, also for computing event-related coherence between two channels (for formula, please see Journal of Neuroscience Methods 134(2004),9-21, p9).

3. Phase locking value, defined by Lachaux(1999).

I was wondering if someone could direct me to the pros and cons of each measure.

Many thanks,

Shen-Mou
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