Why are ECG channels labelled as an EEG channel?

[Lenny86]

Hi,

I’m wondering why ECG channels labelled as an EEG channel as it’s the case following :

10 EEG channels while we have 8 EEG channels + 1 EMG + 1 ECG

And how to deal with that?

Thanks.
Lenny,

[sappelhoff (Stefan Appelhoff)]

What format is the raw data in, and how did you read it into mne?

You can have a look at this function to explicitly set your channel types: mne.io.Raw — MNE 1.9.0 documentation

[Lenny86]

Hello,
I’m reading and EDF file :

raw = mne.io.read_raw_edf("exemple file/EDF ECG/sub-02_ses-01_task-musicTherapy_eeg.edf", preload=True)
print(raw.info)

[sappelhoff (Stefan Appelhoff)]

Ok, looks good to me. You just need to explicitly set the channel types after loading, using the method that I linked to in a comment above.

[Lenny86]

Thank you ! I was expecting this to be automatic by MNE rather than manually set.

[cbrnr (Clemens Brunner)]

As a side note, read_raw_edf() does support automatic channel type inference, but only if the data contains suitable channel labels (that start with the type). In that case, you can set infer_types=True.