Electromyography Overview

Electromyography Guide

RightHealthRIGHTHEALTH

  • Summary
  • Definition
  • Considerations
  • Other Names
  • How the Test is Performed
  • How the Test will Feel
  • How to Prepare for the Test
  • Normal Results
  • Risks
  • What Abnormal Results Mean
  • Why the Test is Performed

Definition

Electromyography is a test that assesses the health of the muscles and the nerves controlling the muscles.


Other Names

EMG; Myogram


How the Test is Performed

For an EMG, a needle electrode is inserted through the skin into the muscle. The electrical activity detected by this electrode is displayed on an oscilloscope, and may be heard through a speaker.

After placement of the electrodes, you may be asked to contract the muscle (for example, by bending your arm). The presence, size, and shape of the wave form -- the action potential -- produced on the oscilloscope provide information about the ability of the muscle to respond when the nerves are stimulated.


Keep reading...

Encyclopedia: Electromyography

Wikipedia.orgWIKIPEDIA.ORG

Electromyography is a technique for evaluating and recording physiologic properties of muscles at rest and while contracting. EMG is performed using an instrument called an electromyograph, to produce a record called an electromyogram. An electromyograph detects the electrical potential generated by muscle cells when these cells contract, and also when the cells are at rest. The electrical source is the muscle membrane potential of about -70mV. Measured EMG potentials range...


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Electromyography?
hi, i need some help on demonstrating the electrical activity of a contracting muscles and...

try this: http://en.wikipedia.org/wiki/Electromyography

Asked by Young_city - 13 months ago

Where can I find electromyography course in Toronto?
I am going to study electromyography , so please tell me where can I find...

The Toronto Western Hospital is home to Canada's largest neuroscience center and busiest IOM department. These are just a few of the many of topics that will be covered in the...

Asked by for2000 - 32 months ago

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  • what is electromyography? - 17 replies

    What is electromyography? on electromyography and motor units. Do you understand that the nervous system transmits...

    Jan 07, 2008

  • electromyography EMG Forums - 9 replies

    Has any one made a sort of VI to measure EMG signals ? Electromyography (EMG) measures the response Has any one made a sort of VI to measure EMG signals ? Electromyography (EMG) measures the ...

    Jun 06, 2008

  • Emg - Electromyography - 7 replies

    Hey out there, I'm not sure if I'm posting in the right place...but here goes. I've had diffuse... neuralgia / neuropathy since about 5 weeks after I was exposed to the infection that ...

    Nov 25, 2007

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