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Simulated (red) and experimental (blue) PNS threshold curves for the HG1 coil in terms of the minimum gradient magnitude as a function of the pulse duration for trapezoidal and sinusoidal current waveforms (the pulse duration is the “ramp” part of the trapezoidal/sinusoidal waveform) applied to different combinations of gradient axis. The shaded grey region is the experimentally accessible region (determined by Gmax and Smax).
