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EEG-Hat with Candle-like Microneedle Electrode.

Takumi Kawana, Yuri Yoshida, Yuta Kudo

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |January 18, 2020
    PubMed
    Summary

    The novel EEG-Hat, a wearable electroencephalogram device, features adjustable, hair-separating microneedle electrodes. This innovation enables comfortable and effective brainwave measurement on hairy scalps, advancing healthcare technology.

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    Area of Science:

    • Biomedical Engineering
    • Neuroscience
    • Wearable Technology

    Background:

    • Current wearable electroencephalogram (EEG) devices lack adjustability for diverse head shapes and struggle with measurements on hairy scalps.
    • These limitations hinder the development of advanced, everyday healthcare technologies.
    • Addressing these issues is crucial for broader EEG application in daily life.

    Purpose of the Study:

    • To develop an adjustable, hat-type EEG device capable of measuring brain activity on hairy scalps without manual hair separation.
    • To overcome the limitations of existing wearable EEG systems.

    Main Methods:

    • Designed and fabricated the EEG-Hat, incorporating candle-like dry microneedle electrodes and a novel shutter-like mechanism for hair separation.
    • Quantified the electrode pressing force and the degree of hair separation required for effective signal acquisition.

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  • Tested the EEG-Hat's ability to measure EEG signals from three distinct hairy scalp locations.

    • Main Results:

    • The EEG-Hat demonstrated adjustability to different head sizes and shapes.
    • The integrated shutter-like structures successfully separated hair, enabling EEG measurement without manual intervention.
    • EEG signals were successfully acquired from three hairy scalp areas using the fabricated EEG-Hat.

    Conclusions:

    • The EEG-Hat effectively addresses key limitations of current wearable EEG devices, namely adjustability and hair interference.
    • This technology holds significant potential for advancing wearable healthcare solutions and facilitating widespread EEG monitoring.
    • The device enables non-invasive brainwave measurement on hairy scalps, paving the way for new diagnostic and monitoring applications.