I didn't feel any after affects other than I did have some muscle twitching for about a week later and a couple tiny bruises. Usually over in around 30-60mins, maybe a little longer if they test more than one side. These tests can be somewhat uncomfortable, there are worse things, but they are worth it because they can provide valuable info. They give you repeated, brief electrical shocks to the nerve which this little device and check the time it takes for the muscle to contract in response to the electrical pulse is recorded. Nerve conduction testing is also often done at the same time as an EMG. THey are checking the state of the muscle and its innervating nerve. The doctor observes the electrical activity while inserting the electrode. THe EMG part is done by inserting tiny needle electrodes through the skin into the muscle tissue at various points they are testing (for example when they test for a pinched nerve in the neck that is causing arm symptoms the needles go in your arm and probably wrist). For patients who would like to learn more about electromyography, or for physicians who would like to schedule a test for a patient, please contact the Brigham and Women’s Hospital Neuromuscular Service at (617) 732-8046. EMGs usually have 2 parts, the EMG (Electromyography) or the NCV (Nerve Conduction Velocity) I think you mean they told you that you are having an EMG to test for a problem in your c-spine ? If not the tests are the same, but the spots they test change.
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