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Related Concept Videos

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Electroconvulsive therapy (ECT), or shock therapy, remains a critical biomedical intervention for severe, treatment-resistant depression. While its origins can be traced back to Hippocrates' observations that malaria-induced convulsions alleviated mental illness, modern ECT has evolved significantly from its earlier, more primitive applications. First introduced in 1938 by Ugo Cerletti and his colleagues, ECT involves inducing controlled seizures using electrical currents. In its early...
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Related Experiment Video

Updated: Jun 14, 2025

MRI-guided Focused Ultrasound Thalamotomy for Patients with Medically-refractory Essential Tremor
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Tremor Suppression Using Functional Electrical Stimulation.

Zahra Habibollahi, Yue Zhou, Mary E Jenkins

    IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society
    |September 2, 2024
    PubMed
    Summary
    This summary is machine-generated.

    Functional electrical stimulation (FES) shows promise for reducing Parkinson's disease tremor. This study found FES effectively suppressed tremors in most participants, but adaptive control is needed for real-time parameter adjustment.

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    Area of Science:

    • Biomedical Engineering
    • Neuroscience
    • Rehabilitation Technology

    Background:

    • Parkinson's disease (PD) and essential tremor are common causes of pathological tremor in older adults.
    • Traditional tremor treatments have limitations, increasing interest in non-invasive methods like functional electrical stimulation (FES).
    • Optimal FES parameters for sustained tremor suppression require further investigation.

    Purpose of the Study:

    • To evaluate the efficacy of out-of-phase functional electrical stimulation (FES) for reducing resting wrist tremor in Parkinson's disease (PD) patients.
    • To investigate the impact of varying FES amplitude and pulse count on tremor suppression and participant comfort.
    • To explore the need for adaptive control in FES for tremor management.

    Main Methods:

    • 14 participants with PD underwent 30-second out-of-phase FES trials.
    • Stimulation amplitude and pulse count were systematically varied, while frequency and pulse width remained constant.
    • Each condition was repeated three times per participant to assess tremor suppression.

    Main Results:

    • Functional electrical stimulation (FES) resulted in overall tremor suppression for 11 out of 14 participants.
    • Three participants did not exhibit average positive effects from the applied FES parameters.
    • Variability in tremor suppression was observed across participants, suggesting individual responses to FES parameters.

    Conclusions:

    • Functional electrical stimulation (FES) demonstrates effectiveness in suppressing tremors associated with Parkinson's disease (PD).
    • Individual responses to FES parameters vary, highlighting the need for personalized treatment approaches.
    • An adaptive control system is recommended to dynamically adjust FES parameters in real-time for optimal and sustained tremor suppression.