[Eeglablist] exporting electrode locations for use in sLORETA

Allan Campopiano alcampopiano at gmail.com
Tue Jul 29 13:17:07 PDT 2014


Avi,

It has been a while since I've used sLORETA but I'll try to help.

Are we looking at the "final registered" .sxyz file that was created in
sLORETA using the output from eeglab2loreta?

I doubt this is the problem but does the format of your .xyz file
correspond to what is expected by sLORETA?

How do the rest of the electrode locations look? Are they all inside the
head and clustered together or do they have no particular pattern?

When I did this in the past I remember loading in a landmark file (fiducial
coordinates) as well as a file with the coordinates for all channels. The
"final registered" .sxyz file was then inspected in the electrode viewer
pane.

Feel free to send me the files you are using for this and I'll have a look.



*Allan Campopiano* | MA Candidate
Laboratory of Cognitive and Affective Neuroscience
Brock University | Psychology Department | 500 Glenridge Ave.
St. Catharines, ON Canada L2S 3A1
*T* 905-688-5550 x3451 *F *905-688-6922


On Tue, Jul 29, 2014 at 3:17 PM, Avi Lazarovits <avila at post.bgu.ac.il>
wrote:

> To be more acurate, I managed to create an .xyz file using the
> eeglab2loreta function. The problem is that the coordinations are not where
> they are supposed to be, for example this is where C3 is in this file:
> [image: תמונה מוטבעת 1]
>
>
>
> 2014-07-29 20:34 GMT+03:00 Allan Campopiano <alcampopiano at gmail.com>:
>
> Hello Avi,
>>
>> The following video tutorials may help. They explain how to create the
>> necessary files for sLORETA (data, landmark, coordinates) from within
>> EEGLAB. We can make the required functions available to you if you are
>> interested.
>>
>> sLORETA basics
>> http://www.youtube.com/watch?v=5UP4_CqzYI4
>>
>> Exporting to sLORETA:
>> http://www.youtube.com/watch?v=VZT2_wQZaBI
>>
>> Sincerely,
>>
>> *Allan Campopiano* | MA Candidate
>> Laboratory of Cognitive and Affective Neuroscience
>>  Brock University | Psychology Department | 500 Glenridge Ave.
>> St. Catharines, ON Canada L2S 3A1
>> *T* 905-688-5550 x3451 *F *905-688-6922
>>
>>
>> On Tue, Jul 29, 2014 at 9:00 AM, Avi Lazarovits <avila at post.bgu.ac.il>
>> wrote:
>>
>>> Hello,
>>> I want to localize sources of EEG activity with sLORETA software, and
>>> found that sLORETA software uses a different system of coordinations than
>>> EEGlab. Is there any tool to make the transformation between the 2 systems?
>>>
>>> _______________________________________________
>>> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
>>> To unsubscribe, send an empty email to
>>> eeglablist-unsubscribe at sccn.ucsd.edu
>>> For digest mode, send an email with the subject "set digest mime" to
>>> eeglablist-request at sccn.ucsd.edu
>>>
>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20140729/f4c445c5/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 67324 bytes
Desc: not available
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20140729/f4c445c5/attachment-0001.png>


More information about the eeglablist mailing list