Apply cortical signal suppression (CSS) to evoked data.
The evoked object to use for CSS. Must contain magnetometer, gradiometer, and EEG channels.
Channels to include. Slices and lists of integers will be interpreted as
channel indices. In lists, channel type strings (e.g.,
'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 good data channels. Note that channels
info['bads'] will be included if their names or indices are
Array of the magnetometer channel indices that will be used to find the reference data. If None (default), all magnetometers will be used.
Array of the gradiometer channel indices that will be used to find the reference data. If None (default), all gradiometers will be used.
The number of projection vectors.
The evoked object with cortical contributions to the EEG data suppressed.
This method removes the common signal subspace between the magnetometer
data and the gradiometer data from the EEG data. This is done by a temporal
n_proj number of projection vectors. For reference,