[FieldTrip] Question about ft_definetrial

liyy90 liyy90 at 163.com
Wed Aug 26 04:07:34 CEST 2020


Dear List,


When I use the following code to define trials and preprocess my data, I got no trialinfo in my data structure. 
I need the trialinfo to extract different condition epochs in the following ERP analysis and I have no idea how to fix it. 
Hope anyone can help.


cfg = [];
cfg.dataset             = 'raw_data/sample_data.set';
cfg.trialfun           = 'ft_trialfun_general'; 
cfg.trialdef.eventtype = 'trigger';
cfg.trialdef.eventvalue = {'11', '12', '13', '14'};
cfg.trialdef.prestim = 0.2; 
cfg.trialdef.poststim = 0.8;
cfg      = ft_definetrial(cfg);


data        = ft_preprocessing(cfg);


And the result in data structure:


Many thanks.
Yan
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