System for assisted mobility using eye movements based on electrooculography

Barea, Rafael; Boquete, Luciano; Mazo, M.; López, Elena
Year: 2002
Type of Publication: Article
Keywords: advantages; assisted mobility system; communication aid; disabled people; disadvantages; elderly; electrooculography; eye model; eye movements; eye-control method; graphic user interface; guidance strategies; handicap; human-machine interfaces; modularity; mouse compute
Journal: Neural Systems and Rehabilitation Engineering, IEEE Transactions on
Volume: 10
Number: 4
Pages: 209 -218
Month: dec.
ISSN: 1534-4320
DOI: 10.1109/TNSRE.2002.806829
Describes an eye-control method based on electrooculography (EOG) to develop a system for assisted mobility. One of its most important features is its modularity, making it adaptable to the particular needs of each user according to the type and degree of handicap involved. An eye model based on electrooculographic signal is proposed and its validity is studied. Several human-machine interfaces (HMI) based on EOG are commented, focusing our study on guiding and controlling a wheelchair for disabled people, where the control is actually effected by eye movements within the socket. Different techniques and guidance strategies are then shown with comments on the advantages and disadvantages of each one. The system consists of a standard electric wheelchair with an on-board computer, sensors and a graphic user interface run by the computer. On the other hand, this eye-control method can be applied to handle graphical interfaces, where the eye is used as a mouse computer. Results obtained show that this control technique could be useful in multiple applications, such as mobility and communication aid for handicapped persons.
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