Development of a human computer Interface system using EOG

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 potentials recorded by horizontal and vertical EOG into a computer in order to control external equipment. The system consists of EOG acquisition unit, EOG pattern recognition part and control command output unit. Three plane electrodes are employed to detect EOG signals, which contain the information related to the eye blinking and vertical (or horizontal) eye movements referred to pre-designed command table. An online signal processing algorithm is designed to get the command information contained 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.