mne.preprocessing.regress_artifact(inst, picks=None, picks_artifact='eog', betas=None, copy=True, verbose=None)[source]#

Remove artifacts using regression based on reference channels.

instinstance of Epochs | Raw

The instance to process.

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 good data channels. Note that channels in info['bads'] will be included if their names or indices are explicitly provided.

picks_artifactarray-like | str

Channel picks to use as predictor/explanatory variables capturing the artifact of interest (default is “eog”).

betasndarray, shape (n_picks, n_picks_ref) | None

The regression coefficients to use. If None (default), they will be estimated from the data.


If True (default), copy the instance before modifying it.

verbosebool | str | int | None

Control verbosity of the logging output. If None, use the default verbosity level. See the logging documentation and mne.verbose() for details. Should only be passed as a keyword argument.

instinstance of Epochs | Raw

The processed data.

betasndarray, shape (n_picks, n_picks_ref)

The betas used during regression.


To implement the method outlined in 1, remove the evoked response from epochs before estimating the regression coefficients, then apply those regression coefficients to the original data in two calls like (here for a single-condition epochs only):

>>> epochs_no_ave = epochs.copy().subtract_evoked()  
>>> _, betas = mne.preprocessing.regress(epochs_no_ave)  
>>> epochs_clean, _ = mne.preprocessing.regress(epochs, betas=betas)  



Gabriele Gratton, Michael G. H Coles, and Emanuel Donchin. A new method for off-line removal of ocular artifact. Electroencephalography and Clinical Neurophysiology, 55(4):468–484, 1983. doi:10.1016/0013-4694(83)90135-9.

Examples using mne.preprocessing.regress_artifact#

Repairing artifacts with regression

Repairing artifacts with regression

Repairing artifacts with regression