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Recording Horizontal Saccade Performances Accurately in Neurological Patients Using Electro-oculogram

Recording Horizontal Saccade Performances Accurately in Neurological Patients Using Electro-oculogram

Published on: March 13, 2018

Development of pointing device using DC-coupled electrooculogram.

Hirotaka Uchtiomi¹, Junichi Hori

¹Graduate School of Science and Technology, Niigata University, 8050 Ikarashi 2-nocho, Nishi-ku, Niigata 950-2181, Japan. f08f005g@mail.cc.niigata-u.ac.jp

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|December 8, 2009

Summary

This study introduces an electrooculogram (EOG)-controlled pointing device to aid communication for individuals with motor paralysis. The system accurately translates eye movements into cursor control for enhanced accessibility.

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Area of Science:

Biomedical Engineering
Assistive Technology
Neuroscience

Background:

Individuals with severe motor paralysis often face significant communication challenges.
Conditions like Guillain-Barre Syndrome and brain-stem infarction can impair verbal communication abilities.

Purpose of the Study:

To develop and validate an electrooculogram (EOG)-based pointing device for individuals with motor paralysis.
To enhance communication accessibility for patients unable to speak.

Main Methods:

Utilized DC-coupled electrooculograms (EOGs) to control a computer pointing device.
Estimated visual angle from EOG amplitude for real-time 2D cursor positioning.
Implemented a median filter to reduce eye-blink artifacts.
Corrected electrode displacement using potential gradient analysis.

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Adjusted for positional drift using head movements via the vestibule-ocular reflex.

Main Results:

The developed EOG pointing device demonstrated real-time 2D cursor control on a PC screen.
Artifact reduction and drift correction techniques improved system accuracy and reliability.
Evaluated the accuracy and operating speed of the system with human subjects.

Conclusions:

The EOG-controlled pointing device offers a viable solution for communication assistance in motor-paralyzed individuals.
The integrated artifact and drift correction methods enhance the usability of EOG-based assistive technology.
This technology has the potential to significantly improve the quality of life for those with severe communication impairments.