Electrooculography: Analysis on device control by signal processing

This paper covers a new technology by placing electrodes on forehead of person around the eyes for recording the eye movements, this technique is called Electrooculography (EOG). It is basically focused on the concept of recording down the polarization potential which is also called corneal-retinal potential (CRP), this is resting potential between retina and cornea. The potential is called electrooculogram. This is a tiny electrical potential that can be found out using electrodes that are comparative to eye displacement. Electrooculography is a means of control for allowing the handicapped, mainly people with eye-motor coordination, which allow them live independent lives. This is a very good assistive system for disabled people with less money. This total command control EOG lets users to guide it with a high intensity of comfort ability. Systems which are becoming more popular day by day are HCI (Human Computer Interaction) that are Eye tracking based. To such systems Electrooculogram (EOG) functions as basic source of input. This integral process of analysis of electrooculogram is called Electrooculography. The paper we are presenting gives basic idea on Electrooculography and its use and applications in different HCI systems. In this work we have also included detection of eye blinks from EOG signal. Conclusively it throws light on various issues concerned with Electrooculography. Keywords: Electrooculography (EOG), eye tracking, eye blinks, Human Computer Interaction (HCI).