Template MEG dewar shapes

To help position the subject in the MEG dewar (i.e. the helmet), you can use ft_realtime_headlocalizer in combination with the FieldTrip realtime interface. The head localizer allows you to visualize the following geometries:

  • head localizer coils
  • realistic head shape, recorded with Polhemus or Structure Sensor
  • schematic outline of the head as a sphere
  • MEG sensor positions
  • dewar outline

Template dewar outlines are available for the CTF and the Elekta system and will be loaded automatically.