[Eeglablist] single trial phase locking

[Michiel Spape]

Dear Arnaud, Sheraz, Tim,

Agreed, that's really great - that is, of Sheraz (and also Tim), not of me :) 

As a side note, in answer to Tim, who wrote:
" I don't see how the epoching workaround proposed by Michiel for computing sliding-window PLV using ITC would work since ITC is not the same as the bivariate PLV. ITC quantifies the phase-locking for a single channel across event-locked trials, but will not tell you whether two channels are phase-locked w.r.t. each other."

Sorry for the confusion - I meant inter-trial cross coherence (ITCC if you will) rather than inter-trial coherence (ITC). It's worth pointing out, though, that some software (like BESA) shows coherence both within channel (i.e. ITC) and between that particular channel and the rest (ITCC) on the same page. This is visually quite informative, and might work pretty well for EEGLAB (at some point of development).
Best,
Mich

Michiel Spapé
Research Fellow
Perception & Action group
University of Nottingham
School of Psychology
www.cognitology.eu


-----Original Message-----
From: Arnaud Delorme [mailto:arno at ucsd.edu] 
Sent: 18 April 2011 19:12
To: sherrykhan78 at yahoo.com
Cc: Michiel Spape; eeglablist
Subject: Re: [Eeglablist] single trial phase locking

Dear Michiel,

that's fantastic. Is there any way, you could wrap your code up into an EEGLAB plugin. It is pretty easy when you use the file templates and I am sure a lot of users would appreciate.

http://sccn.ucsd.edu/wiki/A07:_Contributing_to_EEGLAB

Also Scott Makeig pointed out to me that Tim Mullen has recently implemented a similar (if not identical) method to compute coherence on continuous data and the method is already available in the SIFT toolbox and described in an upcoming IEEE paper.

http://sccn.ucsd.edu/wiki/SIFT

Best regards,

Arno

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