[FieldTrip] axes in ft_connectivityplot

[jan-mathijs schoffelen]

Hi Karl,

The subplots represent the magnitude of the connectivity metric (which are typically unit-less) as a function of frequency.

Best,

Jan-Mathijs

On Jan 24, 2012, at 1:19 AM, Karl Doron wrote:

> Hello,
> 
> Just to clarify my first question below. In the context of the tutorial on the fieldtrip website, what do the axes in this figure represent? 
> 
> Thanks,
> karl doron
> UC, Santa Barbara
> 
>> Hello,
>> 
>> I'm trying to use some of the plot tools for results from ft_connectivityanalysis. Can anyone tell me what the horizontal and vertical axes represent in ft_connectivityplot? The values differ on each plot in the matrix and don't seem to correspond to the data. Also, in ft_topoplotCC, is it possible to weight the line font based on the magnitude of the coherence value?
>> 
>> %% step 1 | freq analysis
>>  
>> cfg            = [];
>> cfg.channel    = {'A224', 'A188', 'A189', 'A163', 'A184','A162'};
>> cfg.method     = 'mtmfft';
>> cfg.output     = 'fourier';
>> cfg.foilim     = [8 12];
>> cfg.toi        = 2.35:0.01:2.65;
>> cfg.keeptrials = 'yes';
>> cfg.keeptapers = 'yes';
>> cfg.tapsmofrq  = 2;
>> cfg.taper      = 'dpss';
>>  
>> freq_alpha     = ft_freqanalysis(cfg, data_spctrm);
>>  
>>  
>> %% step 2 | connectivity analysis
>>  
>> cfg            = [];
>> cfg.method     = 'coh';
>>  
>> coh            = ft_connectivityanalysis(cfg, freq_alpha);
>> 
>> 
>> 
>> Thanks for any feedback,
>> karl doron
>> UC, Santa Barbara
>> 
>> 
>> 
>> 
>> 
> 
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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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