Extraction of Eye Movements for a Communication System by EOG Signal Using DC Amplifier
Ryosuke Baba, Takenao Sugi, Yoshitaka Matsuda, Satoru Goto, Takao Yamasaki · Proceedings of the ISCIE International Symposium on Stochastic Systems Theory and its Applications · 2019
Electrooculographic (EOG) signal reflects the eye movement. This paper proposes the detection of eye movements by EOG signal for a communication of people with movement disabilities. The system consists of a computer, analogue-to-digital converter, digital-to-analogue converter, a direct current (DC) amplifier and a monitor. The monitor is used to display a target for acquiring the eye-gaze position. For adjusting the DC amplifier, the eye-gaze position can be acquired. The target position on the monitor is changed at constant interval, and then the user looks at the target, relation of eye-gaze position and eye potential is derived. From the above, it was verified whether the DC amplifier can be adjusted and horizontal eye movements are detected. Then, the proposed system was used to normal healthy subjects. The result, eye movements is detected, and it can be expected to be used for the development of future communication aid system.