muscle artifact rejection

[J.M. Schoffelen]

Hi Dasha,



Please follow this link:



http://listserv.surfnet.nl/scripts/wa.exe?A2=ind0501
<http://listserv.surfnet.nl/scripts/wa.exe?A2=ind0501&L=fieldtrip&F=&S=&P=36
2> &L=fieldtrip&F=&S=&P=362



If you'd ask me, the filter-padding applied as a default to the
muscle-artifact routine apparently exceeds your trial-boundaries, whereas
the padding in the other routines do not (or you might have put cfg.datatype
= 'continuous' with the other artifact-types)



Jan-Mathijs



  _____

From: FieldTrip discussion list [mailto:FIELDTRIP at NIC.SURFNET.NL] On Behalf
Of Daria Osipova
Sent: Friday, February 18, 2005 11:52 AM
To: FIELDTRIP at NIC.SURFNET.NL
Subject: [FIELDTRIP] muscle artifact rejection



Hi



My muscle artifact rejection for the trial-based data crashes apparently due
to the fact that it starts to search for muscle artifacts before the first
trial starts. However I have this in my script that should supposedly solve
the problem:



cfg = definetrial(cfg);

cfg.trl = cfg.trl(2:end-1,:);

cfg = rmfield(cfg,'trialdef');



And this problem doesn't occur with either EOG or jump rejection.



Here is what it says:



identifying artifact-epochs

evaluating artifact_muscle

scanning for muscle artifacts in trial 1 from 121

??? Error using ==> read_fcdc_data

requested data segment extends over a discontinuous trial boundary



Error in ==> /home/common/matlab/fieldtrip/artifact_muscle.m

On line 110  ==>      dat = read_fcdc_data(cfg.datafile, hdr,
trl(trllop,1)-fltpadding, ...



Error in ==> /home/common/matlab/fieldtrip/rejectartifact.m

On line 238  ==>   eval(sprintf('[cfg, %s] = artifact_%s(cfg);',
cfg.artfctdef.type{type}, cfg.artfctdef.type{type}));



Error in ==> /home/common/matlab/fieldtrip/preprocessing.m

On line 242  ==> [cfg] = rejectartifact(cfg);



Error in ==> /home/electromag/darosi/data/temp/prep.m

On line 78  ==>             data = preprocessing(cfg);





Thanks a lot!



Best regards,



Dasha

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