Eye-Tracker Laboratory

Aims

In the Eyetracking-Laboratory, eye and arm movements are measured simultaneously to study contributions of visual and motor system to the planning and execution of goal-directed movements under risk.

Setup

We measure eye and arm movements by combining an infra-red camera based eye-tracker (EyeLink®II, Sensomotoric Instruments) with a CRT-touch screen (see picture). This set-up allows us to simultaneously access gaze-position, time and location of the start and end of a pointing movement on a trial-by-trial basis, as well as to provide real-time feedback on gaze position and movement end point.

In our experiments, subjects rapidly point at visual targets carrying monetary rewards. Subjects’ visuo-motor strategies are then compared to a model of optimal visuo-motor performance.

Picture: Left: Setup scene during an experiment. Right: EyeLink®II, Sensomotoric Instruments .

Poster:

• Diana Pittig. Effects of different time delays in decision making under risk. (PDF)

• Tim Schönwetter. Einfluss von Scheinbewegung auf sakkadische Augenbewegungen. (PDF)

• Martin Stritzke. Eye movements are guided by vision and the task. (PDF)