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    Area of Science:

    • Rehabilitation Engineering
    • Biomedical Engineering
    • Neuroscience

    Background:

    • Functional electrical stimulation (FES) is a key rehabilitation technique for individuals with motor paralysis.
    • Accurate electrode placement at muscle motor points (MPs) is critical for effective FES.
    • Current methods for electrode placement often rely on anatomical knowledge, which can be imprecise.

    Purpose of the Study:

    • To develop and validate a novel electrode selection system for FES.
    • To quantitatively evaluate electrode effectiveness using a current-joint angle characteristic model.
    • To improve the precision and efficacy of electrode placement in FES applications.

    Main Methods:

    • Development of a current-joint angle characteristic model to predict joint angle response to stimulation current.
    • Implementation of a novel electrode selection system based on this model.
    • Conducting an electrode selection experiment using a 64-channel electrode array.

    Main Results:

    • The proposed system quantitatively evaluates electrode effectiveness.
    • Selected electrodes demonstrated performance equivalent to or superior to those identified through anatomical exploration.
    • The system effectively guides the selection of appropriate electrode placements for FES.

    Conclusions:

    • The developed current-joint angle characteristic model provides a quantitative method for assessing stimulation electrodes.
    • The novel electrode selection system is effective for FES control.
    • This approach enhances the precision of electrode placement, improving rehabilitation outcomes for motor paralysis.