توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱A novel model of high frequency electrical stimulation with transdermal amplitude modulated signaltransdermal
اطلاعات انتشار: کنفرانس بین المللی یافته های نوین پژوهشی درمهندسی برق و علوم کامپیوتر، سال
تعداد صفحات: ۱۰
A transcutaneous amplitude modulated signal (TAMS), in which a high frequency (210 kHz) sinusoidal carrier is modulated by a traditional rectangular pulse, was proposed as a non–invasive neurostimulation approach that can modulate bladder activity similarly to direct pudendal nerve stimulation. The use of high frequency waveforms for TES is suggested by the reduced impedance of the skin with increasing frequency Thus, it may be possible to reach deeper structures by adding high frequency components to the stimulation waveform .We implemented a multilayer volume conductor model including dispersion and capacitive effects, coupled to a cable model of a nerve fiber. We simulated voltage– and current–controlled transcutaneous stimulation, and quantified the effects of frequency on the distribution of potentials and fiber excitation. Our model suggests that high–frequency signals generate larger potentials at depth than low frequencies. However, incorporating kHz signals in the stimulation waveform does not necessarily facilitate fiber excitation<\div>

۲Computational Study of high frequency nerve stimulation with transdermal amplitude modulated signal
نویسنده(ها): ،
اطلاعات انتشار: کنفرانس بین المللی علوم و مهندسی، سال
تعداد صفحات: ۹
A transcutaneous amplitude modulated signal (TAMS), in which a high frequency (012 kHz) sinusoidal carrier is modulated by a traditional rectangular pulse, was proposed as a non–invasive neurostimulation approach that can modulate bladder activity similarly to direct pudendal nerve stimulation. The use of high frequency waveforms for TES is suggested by the reduced impedance of the skin with increasing frequency Thus, it may be possible to reach deeper structures by adding high frequency components to the stimulation waveform .We implemented a multilayer volume conductor model including dispersion and capacitive effects, coupled to a cable model of a nerve fiber. We simulated voltage– and current–controlled transcutaneous stimulation, and quantified the effects of frequency on the distribution of potentials and fiber excitation. Our model suggests that high–frequency signals generate larger potentials at depth than low frequencies. However, incorporating kHz signals in the stimulation waveform does not necessarily facilitate fiber excitation<\div>

۳Transcutaneous Electrical Stimulation with high frequency Signals: volume conductor and circuit models
اطلاعات انتشار: کنفرانس بین المللی پژوهش در علوم و تکنولوژی، سال
تعداد صفحات: ۷
Transcutaneous electrical stimulation (TES) can be used to artificially activate nerve and muscle fibers by applying electrical current pulses between electrodes placed on the skin surface. In this study we implemented a lumped parameter electrical circuit and a distributed parameter volume conductor model to quantify the distribution of potentials in the tissue, including frequency–dependent dielectric properties, during transcutaneous electrical stimulation with a very high frequency sinusoidal carrier and rectangular envelope pulse. The results suggest that incorporating high frequency components in voltage–controlled transcutaneous stimulation may make it possible to reach deeper structures in the tissue, such as nerves.<\div>
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