Design and implementation of a prototype Electrooculography based data acquisition system

For different controlling applications, tracking of eye movements is becoming increasingly popular nowadays. Particularly it is very helpful for the disabled people suffering from Amyotrophic Lateral Sclerosis (ALS) or other illness that prevent correct response of their limbs as well as deprive of their ability to speak. Among different eye movements tracking methods, in this paper Electrooculography (EOG) based system is developed. Electrooculogram (EOG) signals can be used to improve the communication ability as well as the quality of life of the disabled persons. Some devices are made for the purpose of lab experiments to take EOG signal for different patterns of eye movement. A typical EOG data acquisition device or circuit should be developed and compared the data to the standard device one. In this paper a low cost EOG data acquisition system is proposed. Different patterns of eye movement are recorded by the proposed EOG acquisition device and compared them with the standard BIOPAC MP36 system to check accuracy of our designed system. It will play a vital role to develop advanced devices and real life applications for paralyzed or physically disabled persons those who are affected by different diseases of any organ of the body except eye. Compared to standard device, our proposed scheme works very well with less error.