Ergonomic design development of the Visual Experience Database headset

Head-mounted devices allow recording of eye movements, head movements, and scene video outside of the traditional laboratory setting. A key challenge for recording comprehensive first-person stimuli and behavior outside the lab is the form factor of the head-mounted assembly. It should be mounted stably on the head to minimize slippage and maximize accuracy of the data; it should be as unobtrusive and comfortable as possible to allow for natural behaviors and enable longer duration recordings; and it should be able to fit a diverse user population. Here, we survey preliminary design iterations of the Visual Experience Database headset, an assembly consisting of the Pupil Core eye tracker, the Intel RealSense T265 (T265) tracking camera, and the FLIR Chameleon 3 (FLIR) world camera. Strengths and weaknesses of each iteration are explored and documented with the goal of informing future ergonomic design efforts for similar head-mounted systems.