>Psychtoolbox>PsychHardware>EyelinkToolbox>EyelinkDemos>SR-ResearchDemos>SimplePicture

A simple EyeLink integration demo that records eye movements passively
while an image is presented on the screen. Each trial ends when the
space bar or a button is pressed.

Usage:
Eyelink_SimplePicture(screenNumber)

screenNumber is an optional parameter which can be used to pass a specific value to PsychImaging(‘OpenWindow’, …)
If screenNumber is not specified, or if isempty(screenNumber) then the default:
screenNumber = max(Screen(‘Screens’));
will be used.