[Eeglablist] Normalized Coherence

[Arnaud Delorme]

Dear Jitesh,

the values returned by this function are bounded between 0 and 1 and there is no need to normalize them.
For more information about this measure, you may read the article below (and more specifically look for ERPCOH, page 9)

Delorme, A., Makeig, S. (2004) EEGLAB: an open source toolbox for analysis of single-trial EEG dynamics including independent component analysis. Journal of Neuroscience Methods, 134(1), 9-21. Author's PDF, Science direct.

Best, 

Arno

On Jul 9, 2011, at 10:17 PM, Jitesh Joshi wrote:

> Hi,
> 
> I am using newcrossf as below to analyze the coherence between two channels:
> 
> [coh,mcoh,timesout,freqsout,cohboot,cohangles,allcoher,alltfX,alltfY] = newcrossf( EEG.data(3,:), EEG.data(12,:), EEG.pnts, [EEG.xmin EEG.xmax]*1000, EEG.srate, 3 , 'type', 'phasecoher', 'topovec', [3  12], 'elocs', EEG.chanlocs, 'chaninfo', EEG.chaninfo, 'title','Channel T7-T8 Phase Coherence','winsize',128, 'padratio', 16);
> 
> 
> I get values in coh, mcoh which are not normalized. How can I get normalized values?
> 
> 
> 
> Thanks and Regards,
> Jitesh N Joshi
> MSc, Cognitive Systems & Interactive Media,
> Universitat Pompeu Fabra, Barcelona
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