[FieldTrip] 19 channel EEG for source modeling of epileptic focus

"Jörn M. Horschig" jm.horschig at donders.ru.nl
Thu Aug 29 10:02:45 CEST 2013

Dear Sreenivasan,

I am not sure whether you can read in .ced files with the ft_read_sens 
function. You could give it a try though by specifying cfg.elecfile = 

Otherwise, I can see two ways how you can make this work.
First, you could change the content of the file to match the format of 
the other sensor-templates. For this, you can best have a look in 
fieldtrip/template/elec and have a look at one of these files. Then, you 
would need to rearrange the values of your .ced file to match the order 
of the .elc-format.
Alternatively, you could write your own wrapper function, which reads in 
the x-, y- and z-position of the electrodes from the .ced file and 
stores them in a matrix. Also, you need to store the corresponding 
channel label. Using these, you can create an elec-structure that you 
can use as cfg.elec for whatever function you want to do.

Maybe someone else here has worked with .ced files before and can thus 
can help with either of the two solutions. Good luck :)


On 8/27/2013 10:17 PM, Sreenivasan R. Nadar, Ph.D. wrote:
> Hi All,
> I have a 19 channel Nihon - Kohden EEG for epilepsy monitoring and I 
> use the following file for channel locations in 
> ftp://sccn.ucsd.edu/pub/locfiles/eeglab/Standard-10-20-Cap19.ced for 
> data analysis in EEGLab.
> Please let me know if anybody has pre-processing script to import the 
> data in Fieldtrip and also for source localisation of epileptic focus.
> Thank you.
> Sreenivasan
> _______________________________________________
> fieldtrip mailing list
> fieldtrip at donders.ru.nl
> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip

Jörn M. Horschig
PhD Student
Donders Institute for Brain, Cognition and Behaviour
Centre for Cognitive Neuroimaging
Radboud University Nijmegen
Neuronal Oscillations Group
FieldTrip Development Team

P.O. Box 9101
NL-6500 HB Nijmegen
The Netherlands

E-Mail: jm.horschig at donders.ru.nl
Tel:    +31-(0)24-36-68493
Web: http://www.ru.nl/donders

Visiting address:
Trigon, room 2.30
Kapittelweg 29
NL-6525 EN Nijmegen
The Netherlands

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20130829/150867c4/attachment-0002.html>

More information about the fieldtrip mailing list