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Wireless and Portable EOG-Based Interface for Assisting Disabled People

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3 Author(s)
Ubeda, A. ; Virtual Reality & Robot. Lab., Univ. Miguel Hernandez, Elche, Spain ; Iañez, E. ; Azorin, J.M.

This paper describes a new portable and wireless interface based on electrooculography (EOG) aimed at people with severe motor disorders. This interface allows us detecting the movement of the eyes measuring the potential between the cornea and the retina. The interface uses five electrodes placed around the eyes of the user in order to register this potential. A processing algorithm of the EOG signals has been developed in order to detect the movement of the eyes. This interface has many advantages in comparison to commercial devices. It is a cheap and small sized device with USB compatibility. It does not need power supply from the network as it works with batteries and USB supply. Several experiments have been done to test the electronics of the interface. A first set of experiments has been performed to obtain the movement of the eyes of the user processing the signals provided by the interface. In addition, the interface has been used to control a real robot arm. The accuracy and time taken have been measured showing that the user is capable of controlling the robot using only his/her eyes with satisfactory results.

Published in:

Mechatronics, IEEE/ASME Transactions on  (Volume:16 ,  Issue: 5 )