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EEG Channel Location Files

• Sample files sent to us in the following formats:

  EEGLAB ".loc" and ".txt",
  Polhemus ".elp",
  EGI ".spl" and ".xyz",
  Besa ".elp",
  Neuroscan ".map"

  EEGLAB can read all these file formats (except for Neuroscan ".map"). Share your location files!
• Neuroscan company web page with 32- and 64-channel headmodel files (see also dave.zip).
• EGI ftp site with BESA-compatible location files. Complete 10-10 system correspondences for EGI's 64-, 128-, and 256-channel Nets

• Electrocap standard electrode locations
  
  
• Easy-cap electrode locations in 3-D spherical, 3-D cartesian, and 3-D spherical equidistant coordinates.
  
  

For more about convention of electrode placement, refer to Robert Oostenveld's web page.

We have created software (in EEGLAB) to transform between spherical, 3-D cartesian and polar coordinates in a variety of file formats (see readlocs() function help). We will post more information here soon...