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Safe stimulation frequencies

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  • Safe stimulation frequencies

    Dear All,

    I have recently been experimenting with a Digitimer D185 cortical
    stimulator to provide percutaneous stimulation to the quadriceps using
    electrodes placed over the proximal and distal portions of the muscle.
    Ideally I would like to apply a stimulus capability of producing a brief
    tetanic contraction (...yes this does hurt, I have tried it my self a
    number of times whilst I get the stimulus parameters right).

    On close inspection of the technical specials on the D185, I notice that
    by flipping a switch at the back to the stimulator to a "special"
    setting, the stimulator is capability of delivering stimuli at a rate of
    up to 1000pps.

    Could anyone tell me if this is safe? Could this cause peripheral nerve
    damage? What is the highest frequency that would be safe at a stimulus
    intensity capable of producing maximal twitch force (following a single

    I would greatly appreciate any input anyone may have on this.

    Kind regards,


    ************************************************** *********************
    Dr Jack Cannon
    BSocSci(Hons), GradDipEd, PhD
    Bachelor of Exercise Science Course Coordinator
    Lecturer in Motor Control and Learning
    School of Human Movement Studies
    Faculty of Education
    Charles Sturt University
    Panorama Avenue
    Bathurst 2795
    * (02) 6338 4334
    * (02) 6338 4065
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