Electroneuronography

Electroneuronography (pronounced: e-lec-tro-neu-ron-og-raphy), often abbreviated as ENoG, is a diagnostic test used to evaluate the integrity and functionality of the facial nerve. The term is derived from the Greek words "electron" meaning amber, "neuron" meaning nerve, and "graphy" meaning writing.

History

The technique of electroneuronography was first introduced in the 1970s as a method to objectively measure facial nerve function. It has since been widely adopted in the field of otolaryngology and neurology.

Procedure

During an ENoG test, a small electrical current is applied to the facial nerve, typically at the stylomastoid foramen, and the resulting muscle response is recorded. This response, known as the compound muscle action potential (CMAP), provides information about the number of nerve fibers that are functioning.

Clinical Use

Electroneuronography is primarily used to assess the severity of facial paralysis, such as Bell's palsy or Ramsay Hunt syndrome. It can also be used to monitor the progress of nerve recovery after injury or surgery.

Related Terms

Neurophysiology: The study of the functioning of the nervous system.
Electromyography: A diagnostic procedure to assess the health of muscles and the nerve cells that control them.
Nerve conduction study: A test that measures the speed and strength of signals traveling between two or more points along a nerve.

External links

Medical encyclopedia article on Electroneuronography
Wikipedia's article - Electroneuronography

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Electroneuronography