mne.compute_proj_evoked

mne.compute_proj_evoked(evoked, n_grad=2, n_mag=2, n_eeg=2, desc_prefix=None, meg='separate', verbose=None)[source]

Compute SSP (spatial space projection) vectors on Evoked.

Parameters
evokedinstance of Evoked

The Evoked obtained by averaging the artifact.

n_gradint

Number of vectors for gradiometers.

n_magint

Number of vectors for magnetometers.

n_eegint

Number of vectors for EEG channels.

desc_prefixstr | None

The description prefix to use. If None, one will be created based on tmin and tmax.

New in version 0.17.

megstr

Can be ‘separate’ (default) or ‘combined’ to compute projectors for magnetometers and gradiometers separately or jointly. If ‘combined’, n_mag == n_grad is required and the number of projectors computed for MEG will be n_mag.

New in version 0.18.

verbosebool, str, int, or None

If not None, override default verbose level (see mne.verbose() and Logging documentation for more).

Returns
projslist

List of projection vectors.