Development of a human computer Interface system using EOG

Abstract

Bio-based human computer interface (HCI) has attracted more and more attention of researches all over the world in recent years. In this paper, a HCI system which based on electrooculogram (EOG) is proposed. It transforms electrical po- tentials recorded by horizontal and vertical EOG into a computer in order to control external equipment. The system consists of EOG acqui- sition unit, EOG pattern recognition part and control command output unit. Three plane elec- trodes are employed to detect EOG signals, which contain the information related to the eye blinking and vertical (or horizontal) eye move- ments referred to pre-designed command table. An online signal processing algorithm is de- signed to get the command information con- tained in EOG signals, and these commands could be used to control the computer or other instruments. Based on this HCI system, the remote control experiments driven by EOG are realized.