Template 2D layouts for plotting

Electrode positions in the layouts are represented as points in 2-D Carthesian space, i.e. with an X and Y position for each electrode. Furthermore, each electrode has a label. In the layout tutorial you can find more details on how to create and use them. The file format for layout files specified as ascii *.lay files is explained here.

You can use the following snippet of code to get a quick overview of the template layout sets.

dirlist  = dir('template/layout/*');
filename = {dirlist(~[dirlist.isdir]).name}'
for i=1:length(filename)
  cfg = [];
  cfg.layout = filename{i};
  layout = ft_prepare_layout(cfg);

  figure
  ft_plot_lay(layout);
  title(filename{i});
end

EASY CAP

The following series of template layouts is for the electrode caps from EASY CAP. They are sorted based on their electrode montages. FieldTrip provides .mat files (since r5201 - feb 2012) that are based on the bitmap images obtained from the easycap website and shown below. The layout structure stored in those .mat files contains fields that describe the position (.pos), the width (.width), and the height (.height), and the naming (.label) of the electrodes. Furthermore, it contains fields that describe the topographic interpolation boundaries (.mask) and the outlines of the 'head' (.outline).

10%-Arrangements

The following template layout sets are provided:

  • easycapM25.mat :)
  • easycapM3.mat
  • easycapM22.mat
  • easycapM23.mat
  • easycapM24.mat
  • easycapM11.mat
  • easycapM1.mat
  • easycapM15.mat

easycapM25 - International 10/20-System (used in EC20)

easycapM3 - Extended 10/20-System with 30 Channels

easycapM22 - Small Equidistant 29-Channel-Arrangment (used in Braincap32)

easycapM23 - Large Equidistant 32-Channel-Arrangement

easycapM24 - Large Equidistant 34-Channel-Arrangement (used in EC40)

easycapM11 - 61-Channel-Arrangement ("10%-System") (used in BrainCap64)

easycapM1 - 74-Channel-Arrangement (used in EC80)

easycapM15 - 128-Channel-Arrangement

Triangulated Equidistant Arrangements

The following template layout sets are provided:

  • easycapM7.mat
  • easycapM10.mat
  • easycapM16.mat
  • easycapM14.mat

easycapM7 - Spherical 32-Channel-Arrangement

easycapM10 - Equidistant 61-Channel-Arrangement

easycapM16 - Equidistant 88-Channel-Arrangement

easycapM14 - Spherical 124-Channel-Arrangement

Miscellaneous Arrangements

The following template layout sets are provided:

  • easycapM20.mat
  • easycapM17.mat
  • easycapM19.mat

easycapM20 - BESA 32-Channel-Arrangement for Epilepsy Diagnostics

easycapM17 - 29-Channel-Arrangement for Language Research

easycapM19 - 2x64-Channel-Kombi-Montage

actiCAP

The following template layouts are for electrode caps from actiCAP. FieldTrip provides .mat files (since r6121 - june 2012) that are based on the bitmap images shown below. Note that these layouts were created for the DCCN and the MPI specifically and may differ from other actiCAP layouts.

dccn_customized_acticap64.mat

This is a custom 64-Channel-Arrangement for the DCCN. The 32 channels from the 1st amplifier are located central, the 32 channels from the 2nd amplifier are along the rim.

mpi_customized_acticap64.mat

This is a custom 64-Channel-Arrangement for the MPI. Note that the electrode positions are the same as for the DCCN customized version, but that the channel order is different. The MPI version has the 32 channels from the 1st amplifier on the right and the 32 channels from the 2nd amplifier on the left.

NeuroScan Quick-cap

The following template layout set is for an electrode cap from NeuroScan. The origin and construction is described on http://bugzilla.fieldtriptoolbox.org/show_bug.cgi?id=679. The QuikCap_NSL_128 layout has been provided by Andre Cravo.

BioSemi cap

The following template layouts are for an electrode cap from BioSemi.

Standard 10-XX cap

The following template layouts are for an electrode cap based on a standard 10-XX montage.

4D/BTI array

The following template layouts are for a sensor array of the 4D/BTI MEG system.

CTF array

The following template layouts are for a sensor array of the CTF MEG system.

Neuromag array

The following template layouts are for a sensor array of the Neuromag MEG system. The major difference between the neuromag306 and the NM306 layouts is the labelling of the sensors (e.g. 'MEG1431' and '1431' respectively). In a similar vein, NM122.lay and NM122_combined.lay contain the lengthier labels (e.g. 'MEG 008'), whereas NM122all.lay has the shorter labels ('008').

Yokogawa array

The following template layouts are for a sensor array of the Yokogawa MEG system. The labels in these layouts, except for the old variant, are prefixed to indicate the gradiometer type ('PG*' - planar gradiometer, 'AG*' - axial gradiometer).

template/layout.txt · Last modified: 2016/11/08 20:06 by 62.194.165.35

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