Bad channel detection
Warning
This functionality will soon be removed from the pipeline, and will be integrated into MNE-BIDS.
"Bad", i.e. flat and overly noisy channels, can be automatically detected
using a procedure inspired by the commercial MaxFilter by Elekta. First,
a copy of the data is low-pass filtered at 40 Hz. Then, channels with
unusually low variability are flagged as "flat", while channels with
excessively high variability are flagged as "noisy". Flat and noisy channels
are marked as "bad" and excluded from subsequent analysis. See
:func:mne.preprocssessing.find_bad_channels_maxwell for more information
on this procedure. The list of bad channels detected through this procedure
will be merged with the list of bad channels already present in the dataset,
if any.
find_flat_channels_meg
module-attribute
¶
find_flat_channels_meg = False
Auto-detect "flat" channels (i.e. those with unusually low variability) and mark them as bad.
Pipeline steps using this setting
The following steps are directly affected by changes to
find_flat_channels_meg:
preprocessing/_01_data_quality
find_noisy_channels_meg
module-attribute
¶
find_noisy_channels_meg = False
Auto-detect "noisy" channels and mark them as bad.
Pipeline steps using this setting
The following steps are directly affected by changes to
find_noisy_channels_meg:
preprocessing/_01_data_quality