<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>Hi Dave,<br>thank a lot for your detailed answer. This is the sequence
I follow, unfortunately only with file containing ellipsoid head,
working now on changing it it to the sphere head with my custom
channels. I have read in some previous posts and what i see with my
file, that when you insert custom template files, the co-registration
window does some strange things: shows head model as to small, where
one could not see anything because of the size. Did you have such a
problem?<br>Do you have some suggestions on literature to read
(probably what you have already read), regarding head models used in
DIPFIT and what may be important for co-registration procedure. <br>Thanks again for your help,<br>All the best,<br>Ilya </div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> David Towers <dtowers@illinois.edu><br><b><span style="font-weight: bold;">To:</span></b> Ilya Adamchic <dr.ilya@yahoo.com><br><b><span style="font-weight: bold;">Cc:</span></b> Arnaud Delorme <arno@ucsd.edu>; eeglablist@sccn.ucsd.edu<br><b><span style="font-weight: bold;">Sent:</span></b> Tue, February 16, 2010 4:45:15 PM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [Eeglablist] DIPFIT: changing model template .loc file<br></font><br>
Ilya,<br>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:<br>
<br>58<br> EEG VEOG1 127.588 65.992 85.000<br> EEG VEOG2 -130.893 -69.140 85.000<br> EEG EEG1 -109.411 45.735 85.000<br> EEG EEG2 -104.947 70.431 85.000<br>
EEG EEG3 102.967 -87.992 85.000<br> EEG EEG4 101.340 -67.224 85.000<br><br>There are 58 channels listed since the 59th channel is our reference.<br><br>-Dave<br><br><div class="gmail_quote">
On Fri, Feb 12, 2010 at 6:00 PM, Ilya Adamchic <span dir="ltr"><<a rel="nofollow" ymailto="mailto:dr.ilya@yahoo.com" target="_blank" href="mailto:dr.ilya@yahoo.com">dr.ilya@yahoo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"> <div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><div>Dear David,<br>I'm st<br>Did it work with suggestions from Arno concerning using your own template .loc file?<br>
Could you please share your experience in creating a template .loc file and using it with spherical BESA model. <br>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?<br>
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. <br>
Did you use your own spherical coordinates file or some standard
average? <br>I think there are some files for EGI HydroCel in BESA, that one could use, but they are in Carthesian coordinates. <br><br>Arno, is there possibly some other suggestion, how to quicker co-register 128 HydroCell channel location file (with electrodes marked E1-E129)?<br>
<br>Thank you guys for your comments!<br>Best regards,<br>Ilya<br><br></div> </div></div><br>
</div></blockquote></div><br><br clear="all"><br>-- <br>David N. Towers, Ph.D.<br>University of Illinois, Urbana-Champaign<br>Psychology Department<br>603 East Daniel Street<br>Champaign, IL 61820<br>(217) 244-6085<br>
<a rel="nofollow" ymailto="mailto:dtowers@illinois.edu" target="_blank" href="mailto:dtowers@illinois.edu">dtowers@illinois.edu</a><br>
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