about ICA w/o EEGLAB

Jim Li megjim1 at GMAIL.COM
Mon Apr 20 23:13:13 CEST 2009


Dear Jan-Mathijs,

Thanks a lot for your answer. I see why my "componentanalysis" didn't work 
w/o downloading EEGLAB now: 

As users of a 4D system, I'm avoiding your new updated version of 
read_4d_hdr by sticking to some old (Dec. 2008) version of Fieldtrip, simply 
because it's been working fine and I'm lazy. But apparently there's 
no "external/eeglab" subfolder in those old versions (yes, I have several Dec 
08 versions). That's why I had to download EEGLAB to get it to work. I 
wonder since when did you add the subfolder to Fieldtrip? 

Anyway, I guess it's time to embrace the new Fieldtrip versions and learn the 
new way to read 4D data.

Thanks a  lot for your help, :)

Jim


On Mon, 20 Apr 2009 21:33:59 +0100, jan-mathijs schoffelen 
<j.schoffelen at PSY.GLA.AC.UK> wrote:

>Dear Jim,
>
>I don't know whether I understand your question correctly, but
>Fieldtrip can do it 'without' a full download of EEGLAB, because the
>necessary ICA-routines are included in fieldtrip's download (and are
>located in the subfolder external/eeglab/... This means that your
>mystery someone was right ;o)
>
>Cheers,
>Jan-Mathijs
>
>On Apr 20, 2009, at 7:32 PM, Jim Li wrote:
>
>> Dear all,
>>
>> I'm trying to remove cardiac interferences from my MEG signal
>> (gradiometer)
>> channels before doing wavelet analysis. This seems necessary
>> because, when
>> looking at each epoch, the wavelet power @ 10-40Hz are dominated by
>> cardiac interference, and that's the bandwidth of interest. I see
>> some Fieldtrip
>> example script utilizing ICA of EEGLAB to remove cardiac interference.
>> However, someone told me that it can be done in Fieldtrip w/o using
>> EEGLAB.
>> Is this true? If so, I'd appreciate it very much if anyone can send
>> me the
>> code, :)
>>
>> Thanks a lot,
>>
>> Jim
>>
>> ----------------------------------
>> The aim of this list is to facilitate the discussion between users
>> of the FieldTrip  toolbox, to share experiences and to discuss new
>> ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/
>> archives/fieldtrip.html and http://www.ru.nl/neuroimaging/fieldtrip.
>
>----------------------------------
>The aim of this list is to facilitate the discussion between users of the 
FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and 
EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and 
http://www.ru.nl/neuroimaging/fieldtrip.

----------------------------------
The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/neuroimaging/fieldtrip.



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