electromyography

electromyography
1. The recording of electrical activity generated in muscle for diagnostic purposes; both surface and needle recording electrodes can be used, although characteristically the latter is employed, so that the procedure is also called needle electrode examination. 2. Umbrella term for the entire electrodiagnostic study performed in the EMG laboratory, including not only the needle electrode examination, but also the nerve conduction studies. [electro- + G. mys, muscle, + grapho, to write]
- evoked e. SYN: electrodiagnosis.

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n.
continuous recording of the electrical activity of a muscle by means of electrodes inserted into the muscle fibres. The tracing is displayed on an oscilloscope. The technique is used for diagnosing various nerve and muscle disorders and assessing progress in recovery from some forms of paralysis.

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elec·tro·my·og·ra·phy (EMG) (e-lek″tro-mi-ogґrə-fe) [electro- + myography] an electrodiagnostic technique for recording the extracellular activity (action potentials and evoked potentials) of skeletal muscles at rest, during voluntary contractions, and during electrical stimulation; performed using any of a variety of surface electrodes, needle electrodes, and devices for amplifying, transmitting, and recording the signals. electromyographic adj

Medical dictionary. 2011.

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  • electromyography — noun see electromyograph …   New Collegiate Dictionary

  • electromyography — See electromyographic. * * * Process of graphically recording the electrical activity of muscle, which normally generates an electric current only when contracting or when its nerve is stimulated. Electrical impulses are shown as wavelike… …   Universalium

  • electromyography — noun A technique for evaluating and recording the activation signal of muscles. Syn: EMG See Also: electromyogram, electromyograph …   Wiktionary

  • electromyography — n. production and study of electromyograms (graphic records of the electrical activity of muscles) …   English contemporary dictionary

  • electromyography — [ɪˌlɛktrə(ʊ)mʌɪ ɒgrəfi] noun the recording of the electrical activity of muscle tissue by means of electrodes. Derivatives electromyogram noun electromyograph noun electromyographic adjective electromyographically adverb …   English new terms dictionary

  • electromyography — n. continuous recording of the electrical activity of a muscle by means of electrodes inserted into the muscle fibres. The tracing is displayed on an oscilloscope. The technique is used for diagnosing various nerve and muscle disorders and… …   The new mediacal dictionary

  • electromyography — /əˌlɛktroʊmaɪˈɒgrəfi/ (say uh.lektrohmuy ogruhfee), /i / (say ee ) noun a method of investigating the action of muscles by tracking the electrical activity associated with this action, which makes use of electrodes either placed on the skin over… …   Australian-English dictionary

  • electromyography — noun diagnosis of neuromuscular disorders with the use of an electromyograph (Freq. 1) • Hypernyms: ↑diagnostic procedure, ↑diagnostic technique …   Useful english dictionary

  • single fiber electromyography — (SFEMG) electromyography using a needle electrode to record the action potential of one muscle fiber at a time …   Medical dictionary

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