Rename EEG channels

Important

This example requires the meg_wiki package to download the sample dataset. This package can be installed with pip:

$ pip install git+https://github.com/fcbg-platforms/meg-wiki

The EEG channel are named EEG 001, EEG 002, .. while they actually correspond to a standard 10/05 naming. The EEG channel layouts are available in this section.

from matplotlib import pyplot as plt
from mne import set_log_level
from mne.io import read_raw_fif

from meg_wiki.datasets import sample
from meg_wiki.eeg import load_mapping_64chs

set_log_level("WARNING")
fname = sample.data_path() / "recordings" / "meg-eeg-raw.fif"
raw = read_raw_fif(fname, preload=False).pick("eeg")
raw.info

	General
	MNE object type	Info
	Measurement date	2000-01-01 at 00:00:00 UTC
	Participant
	Experimenter	mne_anonymize
	Acquisition
	Sampling frequency	1000.00 Hz
	Channels
	EEG	64
	Head & sensor digitization	435 points
	Filters
	Highpass	0.10 Hz
	Lowpass	330.00 Hz

The mapping between the channel number and name in the standard 10/05 naming convention can be loaded and applied to the MNE object. The EEG channels can be visualize inn their true digitized location through the DigMontage attached.

f, ax = plt.subplots(1, 2, figsize=(16, 8))
ax[0].set_title("Original channel names")
ax[1].set_title("Standard 10/05 channel names")
# plot original channel names
raw.get_montage().plot(axes=ax[0], show=False)
# rename EEG channels
mapping = load_mapping_64chs()
raw.rename_channels(mapping)
# plot renamed channel names
raw.get_montage().plot(axes=ax[1], show=False)
plt.show()

Estimated memory usage: 207 MB