[FieldTrip] HELP time_frequency

[Giuseppe Spinelli]

*n *Dear FieldTrippers

I am new to FieldTrip so I hope you could forgive my inexperience!

I am trying to segment a  triggered EEGLAB dataset (.set) which has been
already preprocessed (resempled, filtered and cleaned by ICA).

What I did was basically to define ethe eventvalue field with respect to
each experimental condition (32,64,128) in the continuous eeglab dataset
then defining trial and then I run the preprocess function. Finally I run
the  ft_databrowser for visual inspecting one condition only (data_SE).

The process results in these errors:

Error using ft_fetch_data (line 62)
data does not contain a consistent trial definition, fetching data is not
possible

Error in ft_databrowser>redraw_cb (line 1485)
art = ft_fetch_data(opt.artdata, 'begsample', begsample, 'endsample',
endsample);

Error in ft_databrowser (line 696)
redraw_cb(h);

Error in eeglab2fieldtrip (line 30)
cfg = ft_databrowser(cfg);


here the script

% loading .set dataset (from EEGLAB)
cfg = [];
cfg.dataset =
'C:\Users\GiuS\Documents\MATLAB\CAVE_ERROR_2_FIELDTRIP\EEG\S01.set';
cfg.continuous = 'yes';

% defining trials
cfg.trialfun = 'ft_trialfun_general';
cfg.trialdef.eventtype = 'trigger';

% cfg.trialdef.eventvalue = 32;
cfg.trialdef.eventvalue = 64;
% cfg.trialdef.eventvalue = 128;

cfg.trialdef.prestim = 1;
cfg.trialdef.poststim = 2;

cfg = ft_definetrial(cfg);

% data_CO = ft_preprocessing(cfg); % n = 140
data_SE = ft_preprocessing(cfg); % n = 30
% data_LE = ft_preprocessing(cfg); % n = 30

% % plotting
cfg.viewmode = 'vertical';
cfg.plotlabels = 'yes';
cfg.blocksize = 10;
% cfg = ft_databrowser(cfg, data_CO);
cfg = ft_databrowser(cfg, data_SE);
% cfg = ft_databrowser(cfg, data_LE);

I would be glad to receive some help.

Many thanks in advance

-
*Giuseppe Spinelli*, Ph.D. student
*Social and Cognitive Neuroscience Laboratory*

*http://agliotilab.org/lab-staff/phd-students/1st-year/giuseppe-spinelli#anchor
<http://agliotilab.org/lab-staff/phd-students/1st-year/giuseppe-spinelli#anchor>*

Department of Psychology, Sapienza University of Rome
*via dei Marsi 78, 00185 - Rome*
Phone/Fax: (+39) 06-49917635

IRCCS Fondazione Santa Lucia
*via Ardeatina 306, 00142 - Rome*
*Tel. (+39) 06 5150 1107 <%28%2B39%29%2006%205150%201107>*

@: giuseppe.spinelli at uniroma1.it
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