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Measured electric field E and estimated neural membrane depolarization ∆Vm of the polyphasic pulses with Gaussian amplitude envelope with fundamental frequency of approximately (a) 30 kHz, (b) 25 kHz, (c) 20 kHz, (d) 15 kHz, (e) 10 kHz, and (f) 7.5 kHz. The initial module voltage VCref was selected so that the coil current during hard commutation did not exceed 6 kA.
