mne.chpi.extract_chpi_locs_ctf(raw, verbose=None)[source]

Extract cHPI locations from CTF data.

rawinstance of Raw

Raw data with CTF cHPI information.

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.


The time-varying cHPI coils locations, with entries “times”, “rrs”, “moments”, and “gofs”.


CTF continuous head monitoring stores the x,y,z location (m) of each chpi coil as separate channels in the dataset:

  • HLC001[123]\\* - nasion

  • HLC002[123]\\* - lpa

  • HLC003[123]\\* - rpa

This extracts these positions for use with compute_head_pos().

New in version 0.20.

Examples using mne.chpi.extract_chpi_locs_ctf