mne.channels.read_ch_adjacency(fname, picks=None)[source]

Parse FieldTrip neighbors .mat file.

More information on these neighbor definitions can be found on the related FieldTrip documentation pages.


The file name. Example: ‘neuromag306mag’, ‘neuromag306planar’, ‘ctf275’, ‘biosemi64’, etc.

picksstr | list | slice | None

Channels to include. Slices and lists of integers will be interpreted as channel indices. In lists, channel type strings (e.g., ['meg', 'eeg']) will pick channels of those types, channel name strings (e.g., ['MEG0111', 'MEG2623'] will pick the given channels. Can also be the string values “all” to pick all channels, or “data” to pick data channels. None (default) will pick all channels. Picks Must match the template.

ch_adjacencyscipy.sparse.csr_matrix, shape (n_channels, n_channels)

The adjacency matrix.


The list of channel names present in adjacency matrix.


This function is closely related to find_ch_adjacency(). If you don’t know the correct file for the neighbor definitions, find_ch_adjacency() can compute the adjacency matrix from 2d sensor locations.

Examples using mne.channels.read_ch_adjacency