[FieldTrip] Problems detecting Artifacts in Neuroscan EEG file

[jan-mathijs schoffelen]

Hi Omoniyi,

What kind of data are you passing to the function? 

BW,

JM



On Oct 3, 2011, at 4:49 PM, Omoniyi Segun wrote:

> Hi,
> 
> I am new to fieldtrip and have been struggling with it for the past four weeks. 
> 
> I am trying to do artifact detection using the Automatic Artifact detection tutorial on the Site. The first issue I am having is when i set
> % make the process interactive
> cfg.artfctdef.zvalue.interactive = 'yes';
> I see nothing in the figure that is plotted. I see the data plotted when i use the sample data provided but not when i use my Neuroscan EEG data.
> 
> Secondly when i click on stop I get the error pasted below.
> 
> 
> 
> ??? Reference to non-existent field 'dimord'.
> 
> Error in ==> dimlength at 74
>       elseif strcmp(data.(fld), 'rpt_pos')
> 
> Error in ==> fixsampleinfo at 31
>   ntrial = dimlength(data, 'rpt');
> 
> Error in ==> ft_checkdata at 579
>   data = fixsampleinfo(data);
> 
> Error in ==> ft_rejectartifact at 203
>   data = ft_checkdata(data, 'hassampleinfo', 'yes');
> 
> Error in ==> do_reject_artifacts at 70
> data_no_artifact_jump = ft_rejectartifact(cfg,artifact_jump);
> 
> Error in ==> do_preprocess at 45
>                 do_reject_artifacts(subject);
> 
> I am comfortable making changes to the code and would like some pointers in the right direction. I am not sure if this is an issue with Neuroscan data.
> 
> Thanks
> 
> Omoniyi Segun
> 
> 
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> fieldtrip at donders.ru.nl
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Jan-Mathijs Schoffelen, MD PhD 
Donders Institute for Brain, Cognition and Behaviour, 
Centre for Cognitive Neuroimaging,
Radboud University Nijmegen, The Netherlands
J.Schoffelen at donders.ru.nl
Telephone: +31-24-3614793

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