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Related Experiment Video

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Recording Horizontal Saccade Performances Accurately in Neurological Patients Using Electro-oculogram
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Eye-tracking capabilities of low-cost EOG system.

Vicente Acuña O, Pablo Aqueveque, Esteban J Pino

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |January 9, 2015
    PubMed
    Summary

    This study introduces a low-cost eye tracking system using electrooculography (EOG) for measuring eye movements. Horizontal gaze tracking proved more accurate than vertical, offering potential for affordable assistive technologies.

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    Area of Science:

    • Biomedical Engineering
    • Ophthalmology
    • Human-Computer Interaction

    Background:

    • Accurate eye tracking is crucial for research and assistive technologies.
    • Existing systems can be expensive and complex.
    • A need exists for cost-effective and accessible eye tracking solutions.

    Purpose of the Study:

    • To design and implement a low-cost eye tracking system.
    • To measure the rotational angle and gaze direction of the eye.
    • To evaluate the system's performance in healthy individuals.

    Main Methods:

    • Developed an electrooculography (EOG) circuit using simple, readily available components.
    • Utilized regular all-purpose contact electrodes for data acquisition.
    • Analyzed EOG signals to determine horizontal and vertical eye movement angles.

    Main Results:

    • The system successfully acquired horizontal and vertical eye movement data.
    • Horizontal angle measurements demonstrated significantly higher accuracy compared to vertical measurements.
    • Performance limitations in vertical tracking were identified.

    Conclusions:

    • The developed low-cost EOG system provides a viable method for measuring eye rotation.
    • Horizontal eye movement tracking is more precise than vertical tracking with this design.
    • Further improvements are needed to enhance vertical measurement accuracy for comprehensive gaze tracking.