Motor unit action potentials recorded with a concentric needle electrode. (A) Normal potential. (B) Long-duration polyphasic potential (shown twice). (C)

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Copyright © The McGraw-Hill Companies, Inc
Copyright © 2004 The McGraw-Hill Companies, Inc. All rights reserved.
Copyright © The McGraw-Hill Companies, Inc
Copyright © 2004 The McGraw-Hill Companies, Inc. All rights reserved.
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Motor unit action potentials recorded with a concentric needle electrode. (A) Normal potential. (B) Long-duration polyphasic potential (shown twice). (C) Short-duration, low-amplitude polyphasic potential. (Used with permission from Aminoff MJ. Electromyography in Clinical Practice. 3rd ed. New York, NY: Churchill Livingstone; 1998.) Source: Investigative Studies, Clinical Neurology, 9e Citation: Aminoff MJ, Greenberg DA, Simon RP. Clinical Neurology, 9e; 2015 Available at: http://neurology.mhmedical.com/DownloadImage.aspx?image=/data/books/1194/ami_ch2_f003.png&sec=99974780&BookID=1194&ChapterSecID=68062386&imagename= Accessed: November 01, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved

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