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Plotting EEG sensors on the scalp#
In this example, digitized EEG sensor locations are shown on the scalp.
# Author: Eric Larson <larson.eric.d@gmail.com>
#
# License: BSD-3-Clause
import mne
from mne.viz import plot_alignment, set_3d_view
print(__doc__)
data_path = mne.datasets.sample.data_path()
subjects_dir = data_path / 'subjects'
meg_path = data_path / 'MEG' / 'sample'
trans = mne.read_trans(meg_path / 'sample_audvis_raw-trans.fif')
raw = mne.io.read_raw_fif(meg_path / 'sample_audvis_raw.fif')
# Plot electrode locations on scalp
fig = plot_alignment(raw.info, trans, subject='sample', dig=False,
eeg=['original', 'projected'], meg=[],
coord_frame='head', subjects_dir=subjects_dir)
# Set viewing angle
set_3d_view(figure=fig, azimuth=135, elevation=80)
Opening raw data file /home/circleci/mne_data/MNE-sample-data/MEG/sample/sample_audvis_raw.fif...
Read a total of 3 projection items:
PCA-v1 (1 x 102) idle
PCA-v2 (1 x 102) idle
PCA-v3 (1 x 102) idle
Range : 25800 ... 192599 = 42.956 ... 320.670 secs
Ready.
Using outer_skin.surf for head surface.
Channel types:: eeg: 59
Projecting sensors to the head surface
Total running time of the script: ( 0 minutes 3.377 seconds)
Estimated memory usage: 16 MB