Tutorial for EEG-Eyetracking integration

[scott-huberty]

Proposed documentation enhancement

I would like to update the current eye-tracking tutorial to demonstrate integrating an eyetracking RawEyelink object with EEG (in this case, a RawMFF object).

We don't need to add any new functions to MNE for this. We can use mne.preprocessing.realign_raw, passing in the photo-diode DIN events that were sent to both the Eyetracking and EEG acquisitions, to align the EEG and eye-tracking signals. I've been doing this for a study we're currently running and it works well!

I have an updated recording from the Pupillary Light Reflex task (including both the eyelink and EGI files) that we can use for this.

[larsoner]

Awesome, this would be a good thing to work on next! We need to add a new dataset for this, too, right?

[scott-huberty]

Awesome, this would be a good thing to work on next! We need to add a new dataset for this, too, right?

Yeah! I think our tutorial's current PLR dataset is downloaded from OSF - so I can update it there (IIRC, My EEG file for the updated dataset is like 200mb.. So probably better to keep it on OSF and not in mne-sample-datasets?)

[larsoner]

OSF is fine to use for datasets, feel free to just update the dataset there and we can add it as a new mne.datasets.<something>