Which gaze position does eyetracker.sample() return?
we wrote a drift check via an inline script and it seems to work just fine. Still, we are wondering how the (x,y) tuple from eyetracker.sample() is calculated? It's just one pair of coordinates, even if we track both eyes. So we guessed that it is either the left's or right eye's position. Or does it calculate an average gaze position by incorporating both eye positions?
We weren't able to find anything regarding that specific topic neither in the opensesame documentation nor on the pygaze sites.