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. 2017 Jan 4;18(2):323–342. doi: 10.1007/s10162-016-0608-2

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© The Author(s) 2017

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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FIG. 2 — Stimulus conditions used to evaluate the model. a Monophasic cathodic and anodic pulses. b Symmetric biphasic pulses, with either cathodic or anodic leading polarity. c Symmetric biphasic pulse with an interphase gap (IPG). d Pseudomonophasic, charge-balanced pulse with different durations of the single pulse phases. e Paired pulse stimulus for the variable probe condition with constant conditioner (first) pulse and varied probe (second) pulse. f Paired pulse stimulus for the constant level condition, with conditioner and probe pulse at the same level.