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  • Description
  • Conversion tool for Neuromag/Elekta FIFF continuous files to Elan EEG format.

  • Usage
  • neuromag2eeg myNeuromagfile.fiff [myeegfile myparfile]

    with :

    • myNeuromagfile.fiff : Neuromag/Elekta file to convert (with extension).
    • options (if omitted, the FIFF file is read, and informations about channels are displayed) :
      • myeegfile : output EEG file (no extension).
      • myparfile : text file containing conversion parameters (sensor names and numbers).


  • Fields of parameter file and example
  • sensors
    M0113NM.5419
    M0112NM.5420
    M0111NM.5421
    M0122NM.5422
    M0123NM.5423
    M0121NM.5424
    M0132NM.5425
    M0133NM.5426
    M0131NM.5427
    ...
    Output channel name list :

    Names and numbers corresponding to elec.dat definition for converted channels, or name and -1 if the channel is not defined in elec.dat .
    The order should be the same as in the input Neuromag file.


  • Example
  • Examples of conversion files :

    • conversion parameter file for 306 MEG channels, 9 stimulations channels, 60 EEG channels and 1 EOG channel : neuromag_376chan.conv.par
    • conversion parameter file for 306 MEG channels, 9 stimulations channels, 2 EOG channels and 1 MISC channel: neuromag_318chan.conv.par


  • Comments
    • The Neuromag system with 122 channels have 2 planar gradiometers at the each sensor location. The Neuromag system with 306 channels have 2 planar gradiometers and 1 axial magnetometer at the each sensor location. When converted, it is not possible to draw a topographical map of all channels. You must select only one of the 2 or 3 sensors of each location.


  • Current version
  • 1.01 04-05-2011

  • History
    • 1.00 08-09-2010 (PEA) : 1st version
    • 1.01 04-05-2011 (PEA) : adds more precision (10 decimals) in for saving sampling period in output header file.


  • Files
  • $ELANPATH/bin/neuromag2eeg
    $ELANPATH/bin64/neuromag2eeg

  • See also
AttachmentSize
neuromag_318chan.conv.par4.01 KB
neuromag_376chan.conv_.par4.63 KB