[FieldTrip] EEG RESTING STATE SOURCE RECONSTRUCTION
Schoffelen, J.M. (Jan Mathijs)
jan.schoffelen at donders.ru.nl
Tue Jan 8 09:00:48 CET 2019
Hi Elena,
Just like almost all high level fieldtrip functions, ft_freqanalysis requires both a ‘cfg’ variable, and a ‘data’ variable in its input. In your code you only use cfg.
Best wishes,
Jan-Mathijs
J.M.Schoffelen, MD PhD
Senior Researcher, VIDI-fellow - PI, language in interaction
Telephone: +31-24-3614793
Physical location: room 00.028
Donders Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands
On 7 Jan 2019, at 18:21, Elene Beitia Loinaz <elene.beitia at alumni.mondragon.edu<mailto:elene.beitia at alumni.mondragon.edu>> wrote:
Dear Fieldtrip Community,
My name is Elene Beitia, I am a student from the Basque Country. I am trying to use the fieltrip toolbox to do a source reconstruction of EEG`s in Resting State.
I am having troubles in doing the fourier transform. The input data that I am using is in 'ms' and the error that I get is the next one:
Error using ft_checkdata (line 525)
This function requires 'raw', 'raw+comp' or 'mvar' data as input, see ft_datatype_raw or ft_datatype_mvar.
Error in ft_freqanalysis (line 212)
data = ft_checkdata(data, 'datatype', {'raw', 'raw+comp', 'mvar'}, 'feedback', cfg.feedback, 'hassampleinfo', 'yes');
I have change the parameters to see if the problem was there but I still get the same.
I add the code in this message:
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% FOURIER TRANSFORMS
cfg = [];
cfg.dataset = filename;
cfg.datatype ='mvar';
cfg.continuous ='yes';
cfg.output = 'fourier';
cfg.channelcmb = 'all';
cfg.channel = 'all';
cfg.trials = 'all';
cfg.keeptrials = 'yes';
cfg.keeptapers = 'yes';
cfg.method = 'mtmfft';
cfg.taper = 'hanning';
cfg.toi = [-1 : 0.10 : 1.5];
cfg.foi = 1:40;
cfg.t_ftimwin = ones(size(cfg.foi)) * 0.5;
cfg.pad ='nextpow2';
cfg.feedback = 'no';
%cfg.hassampleinfo= 'yes';
data_Fourier = ft_freqanalysis(cfg);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Hope you can give me some information in order to solve the problem,
Thank you in advanced,
Elene.
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https://doi.org/10.1371/journal.pcbi.1002202
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