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A Standardized Method for Measurement of Elbow Kinesthesia
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The electronic counting arm movement test (eCAM test).

Florian Bodranghien, Claire Martin, Caroline Ansay

    Neurological Research
    |November 22, 2014
    PubMed
    Summary
    This summary is machine-generated.

    A new electronic test, the electronic counting arm movement test (eCAM), measures pointing movements. Functional electrical stimulation (FES) improved motor performance in healthy volunteers.

    Keywords:
    FES,GravityPointing movement,Upper limbs,eCAM,

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    Area of Science:

    • Biomedical Engineering
    • Neuroscience
    • Rehabilitation Technology

    Background:

    • Characterizing fine motor skills, like visually guided pointing movements, is crucial for assessing neurological function.
    • Existing methods for evaluating successive pointing movements can be time-consuming or lack precision.

    Purpose of the Study:

    • To introduce a novel, transportable electronic platform (eCAM test) for assessing successive fast vertical visually guided pointing movements.
    • To validate the eCAM test by investigating the effects of functional electrical stimulation (FES) on motor performance in healthy individuals.

    Main Methods:

    • Development of a portable electronic platform using Arduino micro-controller and Processing software.
    • Recording pointing performance (clicks) and movement time during visually guided pointing tasks.
    • Application of low-intensity functional electrical stimulation (FES) to dominant upper limb muscles (FCR, ECR, BB, TB) at 2 and 3 mA above sensory threshold in 15 healthy volunteers.

    Main Results:

    • The eCAM test effectively recorded pointing performance and movement time.
    • Movement times were reduced when movements were performed against gravity.
    • Functional electrical stimulation (FES) demonstrated a positive impact, improving pointing performance.

    Conclusions:

    • The eCAM test is a unique, user-friendly electronic tool for rapid assessment of successive vertical pointing movements.
    • This study provides the first evidence that low-intensity FES enhances motor performance in visually guided pointing tasks.
    • The eCAM test holds potential for neurorehabilitation follow-up, prosthetic/orthotic evaluation, and analyzing FES effects in neurological disorders.