mne.preprocessing.compute_proj_eog

mne.preprocessing.compute_proj_eog(raw, raw_event=None, tmin=-0.2, tmax=0.2, n_grad=2, n_mag=2, n_eeg=2, l_freq=1.0, h_freq=35.0, average=True, filter_length='10s', n_jobs=1, reject={'mag': 3e-12}, flat=None, bads=[], avg_ref=False, no_proj=False, event_id=998, eog_l_freq=1, eog_h_freq=10, tstart=0.0, filter_method='fir', iir_params=None, ch_name=None, copy=True, return_drop_log=False, meg='separate', verbose=None)[source]

Compute SSP/PCA projections for EOG artifacts.

Note

raw data must be preloaded.

Parameters
rawmne.io.Raw

Raw input file.

raw_eventmne.io.Raw or None

Raw file to use for event detection (if None, raw is used).

tminfloat

Time before event in seconds.

tmaxfloat

Time after event in seconds.

n_gradint

Number of SSP vectors for gradiometers.

n_magint

Number of SSP vectors for magnetometers.

n_eegint

Number of SSP vectors for EEG.

l_freqfloat | None

Filter low cut-off frequency for the data channels in Hz.

h_freqfloat | None

Filter high cut-off frequency for the data channels in Hz.

averagebool

Compute SSP after averaging. Default is True.

filter_lengthstr | int | None

Number of taps to use for filtering.

n_jobsint

Number of jobs to run in parallel.

rejectdict | None

Epoch rejection configuration (see Epochs).

flatdict | None

Epoch flat configuration (see Epochs).

badslist

List with (additional) bad channels.

avg_refbool

Add EEG average reference proj.

no_projbool

Exclude the SSP projectors currently in the fiff file.

event_idint

ID to use for events.

eog_l_freqfloat

Low pass frequency applied to the E0G channel for event detection.

eog_h_freqfloat

High pass frequency applied to the EOG channel for event detection.

tstartfloat

Start artifact detection after tstart seconds.

filter_methodstr

Method for filtering (‘iir’ or ‘fir’).

iir_paramsdict | None

Dictionary of parameters to use for IIR filtering. See mne.filter.construct_iir_filter for details. If iir_params is None and method=”iir”, 4th order Butterworth will be used.

ch_name: str | None

If not None, specify EOG channel name.

copybool

If False, filtering raw data is done in place. Defaults to True.

return_drop_logbool

If True, return the drop log.

New in version 0.15.

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
proj: list

Computed SSP projectors.

eog_events: ndarray

Detected EOG events.

drop_loglist

The drop log, if requested.

Notes

Filtering is applied to the EOG channel while finding events using eog_l_freq and eog_h_freq, and then to the raw instance using l_freq and h_freq before creation of the epochs used to create the projectors.