Measurement and analysis of human brain function through head and eye movement

This paper describes the measurement system of head and eye movement for analyzing brain function. This system is able to measure the movement of the gaze in space in real time by converting the degree of head movement to that of eye movement. It superimposes this calculation result onto the image seen by the subject. For analysis of brain function, such us a comparative study of the gaze movements of Alzheimer´s disease patients and healthy people, this system provides two methods. One is for movement data of the head and eyes while the subject is tracking changes in targets, and the other is for minute eye movement data while the subject stares at a fixed point