Wang (2011) mentioned that a video-based eye-tracker which uses video cameras to record the eye position of human subjects—recording pupil dilation and eye movement—can be used to examine how fixations, saccades, and pupil dilation responses are related to the information on the screen and behavioral choices. According to Wang (2011:185), "understanding the relationship between these observables can help us to understand how human behavior in the economy can be affected by what information people acquire, where their attention is focused, what emotional state they are in, and even what brain activity they are engaged in.
Wang (2011) mentioned that a video-based eye-tracker using video cameras to record the eye positions of subjects—monitoring pupil dilation and eye movements—can be used to examine how fixations, saccades, and pupil dilation responses relate to information on the screen and behavioral choices. According to Wang (2011:185), "understanding these observable relationships can help us understand how human behavior in economics is affected by what information people obtain, where their attention is focused, their emotional state, and even their brain activity.