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. 2015 Mar 3;2:4. doi: 10.1186/s40673-015-0022-2

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© Huynh and Kiernan; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Plots of excitability parameters recorded from abductor pollicis brevis in a single subject obtained from automated protocol. (A) Charge-duration relationship, in which intercept on stimulus width axis gives strength-duration time constant and slope gives rheobase. (B) Threshold electrotonus for 100 ms polarizing currents, ±40% of threshold. Responses to depolarizing currents start above the line and those to hyperpolarizing currents below the line. (C) Recovery cycle following supramaximal stimulation. (D) Current-threshold relationship.