[FieldTrip] Connectivity analysis

[Schoffelen, J.M. (Jan Mathijs)]

Hi Caroline,

To be honest, your problem statement is confusing. The pasted code mentions ft_connectivityanalysis, the error message mentions ft_freqanalysis. I cannot make any suggestions based on this. Please visit https://urldefense.com/v3/__https://www.fieldtriptoolbox.org/faq/how_to_ask_good_questions_to_the_community/__;!!HJOPV4FYYWzcc1jazlU!4bvbQO9bIoS3ZB6N8kln-2SOVbOk5ghW_e8FLK1cDFUtLaLFCPwPhmwazhDAE9Q8EA3BoU23SzxryneH-3cn4z8-m46N1xgeiP2AYA$  to get some inspiration.

Best wishes,
Jan-Mathijs


On 7 Mar 2023, at 23:24, Mclaughlin, Caroline via fieldtrip <fieldtrip at science.ru.nl<mailto:fieldtrip at science.ru.nl>> wrote:

Hello,
I am having trouble computing a pairwise-phase consistency between all independent components in my EEG data and an ECG signal.

        cfg= [];
        cfg.channelcmb = {'all',’ECG1’};
        cfg.jackknife= 'no';
        cfg.method= 'ppc';
        fdcomp= ft_connectivityanalysis(cfg, freq);

When I specify the combinations as cfg.channelcmb = {'all', ‘all’} the code runs with no issues. However, when I try to specify a particular channel this is the error I am getting:

Index in position 2 exceeds array bounds (must not exceed 1500).

Error in ft_specest_mtmfft (line 246)
    dum = dum(:,freqboi);

Error in ft_freqanalysis (line 515)
      [spectrum,ntaper,foi] = ft_specest_mtmfft(dat, time, 'taper', cfg.taper, options{:}, 'feedback',
      fbopt);

My data was converted from a spm D file to the fieldtrip structure using spm2fieldtrip. I would appreciate any suggestions.


Thank you,

Caroline
Brown University
_______________________________________________
fieldtrip mailing list
https://mailman.science.ru.nl/mailman/listinfo/fieldtrip
https://urldefense.com/v3/__https://doi.org/10.1371/journal.pcbi.1002202__;!!HJOPV4FYYWzcc1jazlU!4X3YoQ068HK-X5_M02Uk7H_TuDq_8M7mg15u0WYbc1UK49oNJz-DD4QvhpC35eK6Kr220PY2z0cwyhKRql-8HbFa5bsW3I1ehiQdfw$

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20230309/6fcf06db/attachment.htm>