[Eeglablist] Help with Channel Location Setup for Compumedics/Neuroscan 32-Channel Cap

[Cedric Cannard]

Dear Leanne,

Do your electrodes have the expected 10-10 or 10-20 labels? And did you use the standard electrode locations template during recordings (no custom locations)?

If so, simply import electrode locations, they will be matched using the electrode labels automatically in EEGLAB: https://urldefense.com/v3/__https://eeglab.org/tutorials/04_Import/Channel_Locations.html*look-up-channel-locations__;Iw!!Mih3wA!FIdeH5tQTdrEG8O5UARzX6x3XDK61n9tZqBVccr3Fxy9ZEoICDMHoyvT7jwkmQU9jlOm7mXquS9rBSDFxxWtjddSaA$ 

> The main area of confusion lies in the *"Edit → Channel Locations"*
   menu, particularly the *“Read locations”* field. I’m unsure if
   additional parameters in this dialog box need to be adjusted to work with these files. (see screenshots below)


We can't see screenshots in eeglablist, but I'm guessing you're asking about the window visible in the tutorial linked above. Simply click <OK> to finalize the process. And always good to examine with < Plot 2-D > or < Plot 3-D > buttons before pressing "OK".


Cedric

> 
> 
> On Wednesday, 9 July 2025 at 06:22, Leanne Hershkowitz via eeglablist eeglablist at sccn.ucsd.edu wrote:
> 
> > Dear EEGLAB Community,
> > 
> > I’m a new user still learning the ins and outs of EEGLAB and appreciate any
> > guidance you can offer.
> > 
> > For simplicity, I’ve been analyzing my EEG data using a 19-channel setup,
> > but I would now like to expand to the full dataset from my cap. I’m using
> > the 32-channel Quik-Cap NEO Net from Compumedics Neuroscan (details here:
> > https://urldefense.com/v3/__https://compumedicsneuroscan.com/product/32-channels-quik-cap-neo-net-synamps-2-rt-and-neuvo/__;!!Mih3wA!GiM2D-LfsHPWWusAqXI-WEluo8Cz3wCLypsFNKppe1oKcK4H8GanJedWwZM_1712dirZZagJsRcSgFp6lxlZ$
> > ).
> > 
> > When I import my EDF files into EEGLAB, I see 35 total channels, of which 5
> > are non-EEG (e.g., auxiliary or reference channels). The challenge I'm
> > facing is locating or creating the correct channel location file to match
> > this cap configuration.
> > 
> > Compumedics/Neuroscan support advised the following:
> > 
> > "You can choose both .asc or .dat, one for 2D plot, the other for 3D plot.
> > These are Cartesian polar coordinate text files used to define electrode
> > positions."
> > 
> > Unfortunately, I have been unable to locate suitable .asc or .dat files, or
> > determine the correct settings within EEGLAB’s interface to properly load
> > them.
> > 
> > A few additional details:
> > 
> > -
> > 
> > I believe I need to use the MNI coordinate system, as I plan to use
> > DIPFIT later on.
> > -
> > 
> > The main area of confusion lies in the "Edit → Channel Locations"
> > menu, particularly the “Read locations” field. I’m unsure if
> > additional parameters in this dialog box need to be adjusted to work with
> > these files. (see screenshots below)
> > 
> > Although Compumedics/Neuroscan may not be the most common system among
> > U.S.-based researchers, I’m hopeful that someone in the community has
> > experience with this setup or can point me to compatible location files.
> > 
> > Any insight or examples would be greatly appreciated.
> > 
> > [image: image.png]
> > [image: image.png]
> > 
> > Best,
> > 
> > <https://urldefense.com/v3/__http://www.njnfb.com__;!!Mih3wA!GiM2D-LfsHPWWusAqXI-WEluo8Cz3wCLypsFNKppe1oKcK4H8GanJedWwZM_1712dirZZagJsRcSgJWzfeVU$ >
> > 
> > Leanne Hershkowitz, M.A./Ed.S, LPC, BCN, QEEG-D Candidate
> > 
> > Co-Owner & Neurofeedback Director
> > 
> > Attuned Neurofeedback & Psychotherapy of NJ
> > 
> > Leanne at anpnj.com
> > 
> > 908.376.9148 <9083769148>
> > 
> > 908.376.6167 <9083766167>
> > 
> > 33 Plymouth St, Montclair NJ 07042
> > Suite 208 & Lower Level 1
> > 
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