[FieldTrip] ft_rejectvisual channel selection
Stan van Pelt
stan.vanpelt at fcdonders.ru.nl
Mon May 16 16:16:16 CEST 2011
Hi Diego,
You could try using ft_databrowser instead of ft_rejectvisual (followed by
ft_rejectartifact), so:
cfg = [];
cfg.continuous = 'no';
cfg.channel = {'EEG057','EEG058'};
cfg = ft_databrowser(cfg,data);
I think it should work like this.
Best,
Stan
-----Original Message-----
From: fieldtrip-bounces at donders.ru.nl
[mailto:fieldtrip-bounces at donders.ru.nl] On Behalf Of Lozano Soldevilla,
D. (Diego)
Sent: Monday, May 16, 2011 4:00 PM
To: fieldtrip at donders.ru.nl
Subject: [FieldTrip] ft_rejectvisual channel selection
Dear Fieldtrippers,
I'm using ft_rejectvisual function to reject visually EOG artifacts of
epoched trials. My problem consist that I'm not able to plot only the EOG
channels even when I explicitly select them ignoring the 'MEG' channels (I
get a plot with all channels MEG + EOG).
I directly used rejectvisual_channel (used in line 263 offt_rejectvisual)
function selecting the EOG channels but I'm getting again all channels.
Somebody could tell me what I'm doing wrong?
Thanks in advance,
Diego
PS: Code
%epoching
cfg = [];
cfg.dataset = [direc d(rr,1).name];
cfg.trialdef.eventtype = 'frontpanel trigger';
cfg.trialdef.eventvalue = 4;
cfg.trialdef.prestim = 1; % in seconds
cfg.trialdef.poststim = 4; % in seconds
cfg.trialdef.epochmoving = 'inbackward';
cfg.trialdef.pivoteventvalue = 2;% cue stimulus
cfg.trialdef.jumps = 1;
cfg.trialfun = 'trialselec';
cfg = ft_definetrial(cfg);
cfg.channel = {'MEG' 'EEG057' 'EEG058'};
cfg.lpfilter = 'yes';
cfg.lpfreq = 250;
cfg.baselinewindow = [-1 0];
cfg.keeptrials = 'yes';
cfg.demean = 'yes';
cfg.continuous = 'yes';
data = ft_preprocessing(cfg);
%..............
%visual data rejection
cfg = [];
cfg.channel = {'EEG057' 'EEG058'};
cfg.method = 'channel';
cfg.keepchannel = 'yes';
data_c = ft_rejectvisual(cfg,data);
--
PhD Student
Donders Institute for Brain, Cognition and Behaviour
Centre for Cognitive Neuroimaging
Trigon, room 0.83
Kapittelweg 29
Radboud University Nijmegen
NL-6500 HB Nijmegen
The Netherlands
E-Mail: d.lozanosoldevilla at fcdonders.ru.nl
Tel: +31-(0)24-36-66274
Web: http://www.neuosc.com/
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