Check fixation during experiment -- Titta + tobii

Coding
1

Hi all,

I want to check if a participant is fixating at a cross before starting a trial for an experiment.

I am using a Tobii Pro, and I am trying to interact with it using the Titta toolbox (Titta/readme.md at master · dcnieho/Titta · GitHub) in python 3. I can’t figure out how to extract gaze position information in real time.

Any suggestions would be greatly appreciated!!! I am also up for ditching titta if there’s any other library sugestions that work for Tobiis,

Thanks in advance!

Best,

Belen

2

Try PsychoPy’s built-in Tobii interface, iohub: ioHub Common Eye Tracker Interface — PsychoPy v2023.1.1

Once you get it talking to the eye-tracker, you just use tracker.getPos() and it’ll return the current fixation position.