[FieldTrip] Connectivity analysis

[jan-mathijs schoffelen]

Hi Kathryn,

I believe that ft_connectivityanalysis is capable of dealing with frequency domain data that contain a time dimension. I assume here that you would like to compute coherence, rather than correlation. Last time I checked, ft_connectivityanalysis could not compute an ordinary correlation coefficient.

Best wishes,

Jan-Mathijs

On Jul 6, 2012, at 6:59 PM, Kathryn Manning wrote:

> Dear FieldTrip list members,
> 
> I am comparing the connectivity patterns in the brain measured using fMRI and electrophysiological recordings.  I am trying to correlate the LFP signals as a function of time, using a sliding window analysis.  I'm able to generate plots using ft_connectivityplot but this is as a function of frequency.  From what I can tell the 'mtmconvol' method generates data with a time aspect in it's dimord, but are there any functions available in fieldtrip in order to calculate the correlation as a function of time? 
> 
> Any help would be greatly appreciated, thank you so much.
> 
> Kathryn 
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Jan-Mathijs Schoffelen, MD PhD 

Donders Institute for Brain, Cognition and Behaviour, 
Centre for Cognitive Neuroimaging,
Radboud University Nijmegen, The Netherlands

Max Planck Institute for Psycholinguistics,
Nijmegen, The Netherlands

J.Schoffelen at donders.ru.nl
Telephone: +31-24-3614793

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