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Related Experiment Video

Updated: Jun 18, 2026

In Vivo Electrophysiological Measurements on Mouse Sciatic Nerves
11:07

In Vivo Electrophysiological Measurements on Mouse Sciatic Nerves

Published on: April 13, 2014

Artifact on electromyography produced by an implanted sacral nerve stimulator.

Peter O'carroll1, Tulio E Bertorini, Sue Maccarino

  • 1University of Tennessee Health Science Center, Memphis, TN; and daggerWesley Neurology Clinic, Memphis, TN 38163, USA. pocarrol@utmem.edu

Journal of Clinical Neuromuscular Disease
|December 4, 2009
PubMed
Summary

Electromyography revealed unusual "dive bomber" sounds in a patient with muscle cramps. This artifact was traced to a sacral nerve stimulator used for bladder incontinence.

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Area of Science:

  • Neurology
  • Biomedical Engineering

Background:

  • Nerve conduction studies and electromyography (EMG) are diagnostic tools for neuromuscular disorders.
  • Muscle cramps can be debilitating and require accurate diagnosis.

Observation:

  • A patient presented with muscle cramps, undergoing EMG testing.
  • EMG recordings showed spontaneous activity with fluctuating amplitude, described as a "dive bomber" sound.

Findings:

  • The observed abnormal EMG activity was identified as an artifact.
  • The artifact originated from an implanted sacral nerve stimulator device.

Implications:

  • This case highlights the importance of considering device-related artifacts in EMG.
  • Awareness of sacral nerve stimulator artifacts can prevent misdiagnosis of neurological conditions.

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Last Updated: Jun 18, 2026

In Vivo Electrophysiological Measurements on Mouse Sciatic Nerves
11:07

In Vivo Electrophysiological Measurements on Mouse Sciatic Nerves

Published on: April 13, 2014

An Implantable System For Chronic In Vivo Electromyography
09:52

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Published on: April 21, 2020

  • Understanding potential signal interference is crucial for accurate electrodiagnostic testing.