FaceLab 4 was manufactured by Seeing Machines and it was a leading eye tracking system at the time the lab accepted it on 2006. It is an image-based eye tracking system which can detect not only eye movements via infra-red signals but also head rotations and facial features with visible light images. Although it has only 60 Hz sampling rate, we still considered and adopted it as the first choice of eye tracker for the sake of collecting a variety of head, face, and eye information and making the participant more comfortable without being "fixed" on a chin rack.
Along with an overlaying and analyzing software called Gaze Tracker, FaceLab can combine the contents on the screen and the eye fixation points on the screen making an analysis of scan path or heat map possible and even convenient. Graduate students in the lab have used this system to explore research topics such as lie-detection with the scene-recognition and eye-tracking task, the pointing effect of fingers and gaze directions of main characters in children's English paint book, and the fixation-directing effect of feints in boxing and badminton. Currently, more studies about eye tracking are ongoing and even more ideas are incubating.
