needle electrode

needle electrode
a thin, cylindrical electrode with an outer shaft beveled to a sharp point, enclosing a wire or series of wires; needle electrodes are used to explore the activity of single motor or nerve units or stimulate them.

Medical dictionary. 2011.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • bipolar needle electrode — a needle electrode consisting of two insulated wires inside a single cylinder, with neither one acting as the reference electrode; variations in voltage can be noted between the areas the wires touch …   Medical dictionary

  • monopolar needle electrode — a needle electrode consisting of a single piece of stainless steel wire coated with insulating material except at the tip; it must be accompanied by another electrode as a reference …   Medical dictionary

  • single fiber needle electrode — a needle electrode with a small recording surface for the recording of individual muscle fiber action potentials. See also single fiber electromyography …   Medical dictionary

  • concentric needle electrode — a recording electrode consisting of an insulated metal wire inside a hollow stainless steel cannula; differences in potential are measured using the needle shaft as reference and the wire tip as the exploring electrode …   Medical dictionary

  • bifilar needle electrode — bipolar needle e …   Medical dictionary

  • coaxial needle electrode — concentric needle e …   Medical dictionary

  • electrode — 1. Device to record one of the two extremities of an electric circuit; one of the two poles of an electric battery or of the end of the conductors connected thereto. 2. An electrical terminal specialized for a particular electrochemical reaction …   Medical dictionary

  • Ion selective electrode — An ion selective electrode (ISE), also known as a specific ion electrode (SIE), is a transducer (or sensor) that converts the activity of a specific ion dissolved in a solution into an electrical potential, which can be measured by a voltmeter or …   Wikipedia

  • Neurotrophic electrode — The neurotrophic electrode: teflon coated gold wires extend from the back of the glass cone, while neurites (shown in blue) grow through it. The neurotrophic electrode is an intracortical device designed to read the electrical signals that the… …   Wikipedia

  • electric needle — n. a high frequency electrode in the form of a needle, used in surgery to cauterize tissue …   English World dictionary

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