[FieldTrip] more on artfifact rejection

jan-mathijs schoffelen jan.schoffelen at donders.ru.nl
Mon Jan 24 12:12:57 CET 2011


Dear Michael,

I agree. The tutorial should be 'de'-confused by sketching option 1,  
and another one should be describing option 2, or the original should  
be clearly making the distinction.

Best,

JM


On Jan 24, 2011, at 11:48 AM, Michael Wibral wrote:

> Hi Jan-Mathijs,
>
> I am a bit unsure how to proceed:
>
> (1) sketch the artifact correction way like this
> ft-definetrial -> artifact.XXX.YYY -> ft_rejectartifact ->  
> ft_preprocessing
> OR
> (2) ft-definetrial -> ft_preprocessing (with cfg.padding) ->  
> artifact.XXX.YYY -> ft_rejectartifact(cfg, data) -> ft_preprocessing.
>
> I think I should go for option (1) as this seems to be the standard  
> use on continuous data. Sometime in the futrure one should then add  
> a tutorial for those that have data in trials to start with.
>
> Michael
>
> -----Urspr√ľngliche Nachricht-----
> Von: "jan-mathijs schoffelen" <jan.schoffelen at donders.ru.nl>
> Gesendet: Jan 21, 2011 9:55:48 AM
> An: "Email discussion list for the FieldTrip project" <fieldtrip at donders.ru.nl 
> >
> Betreff: Re: [FieldTrip] more on artfifact rejection
>
>> Dear Michael,
>>
>> Yes, I agree with you here as well. In principle the
>> ft_artifact_zvalue supports data as a second input argument, but in
>> such case the different types of padding in the cfg do not make  
>> sense.
>> I would indeed remove the second input arguments in the example code
>> snippets. Could I ask you to take care of that?
>>
>> Thanks,
>>
>> JM
>>
>>
>> On Jan 20, 2011, at 10:51 AM, Michael Wibral wrote:
>>
>>> Deal Fieldtrip users,
>>>
>>> there is something else I do not understand in the tutorial: if you
>>> read in the data in trials (as it is done) how can you do padding
>>> later as it is suggested. I tried to run the example code on teh
>>> website  reading in the data such that it contains trials. If I then
>>> try to search for muscle artifacts I get the 'subscript indices must
>>> be positive or logical ... values', indicating that the code tries
>>> to access data that aren't there. If I set the padding to zero
>>> (instead of 0.1) it works. So I am wondering wether somehow one
>>> should actually run these things on continuous data (contrary to
>>> what is indicated in the tutorial)?
>>>
>>> Michael
>>> <Michael Wibral.vcf><Michael
>>> Wibral.vcf>_______________________________________________
>>> fieldtrip mailing list
>>> fieldtrip at donders.ru.nl
>>> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip
>>
>> Dr. J.M. (Jan-Mathijs) Schoffelen
>> Donders Institute for Brain, Cognition and Behaviour,
>> Centre for Cognitive Neuroimaging,
>> Radboud University Nijmegen, The Netherlands
>> J.Schoffelen at donders.ru.nl
>> Telephone: 0031-24-3614793
>>
>> _______________________________________________
>> fieldtrip mailing list
>> fieldtrip at donders.ru.nl
>> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip
> <Michael Wibral.vcf>_______________________________________________
> fieldtrip mailing list
> fieldtrip at donders.ru.nl
> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip

Dr. J.M. (Jan-Mathijs) Schoffelen
Donders Institute for Brain, Cognition and Behaviour,
Centre for Cognitive Neuroimaging,
Radboud University Nijmegen, The Netherlands
J.Schoffelen at donders.ru.nl
Telephone: 0031-24-3614793





More information about the fieldtrip mailing list