[Eeglablist] Sensor locations

Rose, Douglas Douglas.Rose at cchmc.org
Wed Jan 15 17:26:41 PST 2014

Dear Stephen,
   Thank you so much.  Away from the lab this evening but i will be in lab tomorrow morning and will write back then.
   Thank you so much for answering.

From: Stephen Politzer-Ahles [politzerahless at gmail.com]
Sent: Wednesday, January 15, 2014 8:13 PM
To: Rose, Douglas
Cc: eeglablist at sccn.ucsd.edu; Hirsch Matani (matanihs at gmail.com)
Subject: Re: [Eeglablist] Sensor locations

Hi Douglas,
What is the error message you're getting?

I noticed another similar question on the list a few days back, but I don't think they've gotten an answer yet either. I've worked with CTF data in EEGLAB before so I can try to take a look for you, but I'm traveling right now and it's going to be a few more days before I have access to my CTF files to play with.

Stephen Politzer-Ahles
New York University, Abu Dhabi
Neuroscience of Language Lab

On Tue, Jan 14, 2014 at 4:43 AM, Rose, Douglas <Douglas.Rose at cchmc.org<mailto:Douglas.Rose at cchmc.org>> wrote:
Dear Experts,

   We are trying to read CTF MEG files into EEGLAB to utilize ICA.  The EEGLAB website does indicate that it reads CTF files.  The program does read in the CTF *.ds file but does not seem to find the sensor locations. Does any one have any experience with this?

    We can output the CTF sensor positions in CTF software to obtain a text file with sensor names  and xyz locations (though we may have to alter the x and y columns depending on the default reference frame in EEGLAB.  We note that EEGLAB can read txt files for XYZ locations.  however, some aspect of our file format must be incorrect as the program gives error messages.  Is the file format listed somewhere for the txt xyz files?  How would I convert to LOCS format?

   We would be most appreciative if someone could help us with us as it has been a stumbling block for us.


Douglas F. Rose, M.D.
Medical Director, CCHMC MEG Center
Professor of Pediatrics and Neurology
Cincinnati Children’s Hospital Medical Center, ML#11006
3333 Burnet Ave
Cincinnati, OH 45229  USA


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