[FieldTrip] 96 channel ActiCap sensor locations

Julian Keil julian.keil at gmail.com
Sat Feb 25 20:31:58 CET 2017

Hi Andrew,

I attached you a function to convert the theta/phi coordinates to xyz-coordinates you can use in FieldTrip (Written by Stephan Moratti @UCM).
To actually use the result, you need to build an electrode structure, so do something like this:

cap=importdata('128_channel_easycap.elp'); % Import the Vendor-Provided 3d Positions

%% Step 2.1. Make an electrode file


%% Check the positiosn on the head surface. They don't look good, do they?

  triplot(vol.bnd(1).pnt, vol.bnd(1).tri,  [], 'edges');

%% Step 3 Move the electrodes to match the head



Good luck,


Dr. Julian Keil

AG Multisensorische Integration
Klinik für Psychiatrie und Psychotherapie
der Charité im St. Hedwig-Krankenhaus
Große Hamburger Straße 5-11, Haus 2
10115 Berlin

Telefon: +49-30-2311-1879
Fax:        +49-30-2311-2209

Am 25.02.2017 um 16:39 schrieb Andrew Chang:

> Dear FieldTrip users,
> I am wondering whether anyone would like to share the Fieldtrip layout file of the "actiCap 96Ch Standard 2" EEG cap with me. I have checked around the websites of Fieldtrip and Easycap, but failed to find anything useful. So far I only got it's top-view map and it's Theta/Phi Coordinates (see the attached PDFs in the links below).
> https://www.dropbox.com/s/wlshxqb93tn4duz/actiCAP-96-channel-Standard-2.pdf?dl=0
> https://www.dropbox.com/s/6bva7az6ydc6hvh/actiCap-96Ch-Standard%202%20Theta_Phi_CAP.pdf?dl=0
> It would be very appreciated if anyone can share the Fieldtrip layout file with me, or teach me how to create a layout in Fieldtrip from Theta/Phi Coordinates.
> Thank you all in advance!
> Sincerely,
> Andrew
> --
> Andrew Chang, Ph.D. Candidate
> Vanier Canada Graduate Scholar
> http://changa5.wordpress.com/
> Auditory Development Lab
> Department of Psychology, Neuroscience & Behaviour
> McMaster University
> _______________________________________________
> fieldtrip mailing list
> fieldtrip at donders.ru.nl
> https://mailman.science.ru.nl/mailman/listinfo/fieldtrip

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