[Eeglablist] DIPFIT: changing model template .loc file
David Towers
dtowers at illinois.edu
Tue Feb 16 07:45:15 PST 2010
Ilya,
I did follow the suggestions with some success. Within dipfit, I selected
"Custom Model", and entered all the default files used when selecting
"Spherical Four-Shell (BESA)" except for the "Model template channel
locations file". For that, I put together a file based on the electrode
locations of our cap. I've attached the file as an example (note we use a
59-channel cap with electrodes labeled "EEGX", where X is the number, plus
two VEOG channels). Here's an example of the first few lines from our .elp
file:
58
EEG VEOG1 127.588 65.992 85.000
EEG VEOG2 -130.893 -69.140 85.000
EEG EEG1 -109.411 45.735 85.000
EEG EEG2 -104.947 70.431 85.000
EEG EEG3 102.967 -87.992 85.000
EEG EEG4 101.340 -67.224 85.000
There are 58 channels listed since the 59th channel is our reference.
-Dave
On Fri, Feb 12, 2010 at 6:00 PM, Ilya Adamchic <dr.ilya at yahoo.com> wrote:
> Dear David,
> I'm st
> Did it work with suggestions from Arno concerning using your own template
> .loc file?
> Could you please share your experience in creating a template .loc file and
> using it with spherical BESA model.
> As i understood from Arno's answer, one has to select a custom model and
> then add it in to the DIPFIT set up window as a "self made" template .loc
> file. Did it work in your case?
> I think i have similar situation with yours. I have EGI HydroCell custom
> coordinates for each patient and it takes to long to manually pair all my
> custom channels with a standard .loc file given in EEGLAB, it simply takes
> to much time.
> Did you use your own spherical coordinates file or some standard average?
> I think there are some files for EGI HydroCel in BESA, that one could use,
> but they are in Carthesian coordinates.
>
> Arno, is there possibly some other suggestion, how to quicker co-register
> 128 HydroCell channel location file (with electrodes marked E1-E129)?
>
> Thank you guys for your comments!
> Best regards,
> Ilya
>
>
>
--
David N. Towers, Ph.D.
University of Illinois, Urbana-Champaign
Psychology Department
603 East Daniel Street
Champaign, IL 61820
(217) 244-6085
dtowers at illinois.edu
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