electro-, electr-, electri-

1. A graphic record of the electric activity of a muscle either spontaneous or in response to artificial electric stimulation.
2. A record of eye movements when reading, obtained by measuring the potential difference between an electrode placed at the center of the forehead and one placed at the temple.

A machine used for producing a graphical tracing of the electrical activity picked up via electrodes inserted into muscle tissue.

It consists of an amplifier, an electrically activated trace-drawing pen, and a moving strip of paper.

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. An 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.

A sub-atomic particle with a negative quantized charge.

A flow of electrical current consists of the unidirectional (on average) movement of many electrons. The more mobile electrons are in a given material, the greater its electrical conductance (or equivalently, the lower its resistance).

Electrons are the primary charge carriers in electric currents.

Producing insensibility to pain with the use of electrical current.

Diagnosis of disease states by recording the spontaneous electrical activity of tissues or organs or by the response to stimulation of electrically excitable tissue.

1. An electromyography in which the nerve of the muscle under study is stimulated by application of an electric current.
2. A method of measuring changes in a peripheral nerve by combining electromyography of a muscle with electrical stimulation of the nerve trunk carrying fibers to and from the muscle.

1. Relating to devices, systems, or circuits that employ components; such as, vacuum tubes, integrated circuits, or transistors in their design; an electronic sensor. 2. Using, or accessed through a computer or computer network; for example, internet electronic banking.

1. Simple electronic tags that can be turned on or off. 2. A system that uses tags that can only be turned on or off to indicate check-out or check-in status. Both electromagnetic and RF systems are of this type.

A serial, created by the Auto-ID Center, that will complement barcodes.

The EPC has digits to identify the manufacturer, product category and the individual item.

A reference to any broken or unwanted electrical or electronic appliances which have become items of concern because many components of such varied equipment are considered toxic and are not biodegradable.