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. 2016 Nov 24;4(22):e13039. doi: 10.14814/phy2.13039

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© 2016 The Authors. Physiological Reports published by Wiley Periodicals, Inc. on behalf of The Physiological Society and the American Physiological Society.

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Kv2.1‐IR macroclusters on α‐motoneurons significantly reduce when motor axons are stimulated. (A) Quantitative analysis of reduced Kv2.1‐IR soma macrocluster areas on lumbar α‐motoneurons following sciatic nerve stimulation with dorsal rhizotomy in all 3 rats sampled. The impact of dorsal rhizotomy on Kv2.1‐IR macrocluster areas on lumbar α‐motoneurons was quantified in 3 rats. N = the number of Kv2.1 macroclusters sampled. Significance (P < 0.05) is indicated with asterisk and determined with Mann–Whitney T‐test and data are presented ± SD. (B) Electromyography (EMG) of medial gastrocnemius (MG) muscle indicates that the injury discharge during dorsal root cuts did not cause motor output activity in the muscle. The MG nerve (MGN) itself was stimulated before and after the dorsal roots were cut to confirm EMG recordings.