electrode

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electrode

 [e-lek´trōd]
either of two terminals of an electrically conducting system or cell; specifically, the uninsulated portion of a lead that is in direct contact with the body.
active electrode therapeutic electrode.
calomel electrode one capable of both collecting and giving up chloride ions in neutral or acidic aqueous media, consisting of mercury in contact with mercurous chloride; used as a reference electrode in pH measurements.
depolarizing electrode an electrode that has a resistance greater than that of the portion of the body enclosed in the circuit.
hydrogen electrode an electrode made by depositing platinum black on platinum and then allowing it to absorb hydrogen gas to saturation; used in determination of hydrogen ion concentration.
indifferent electrode one larger than a therapeutic electrode, dispersing electrical stimulation over a larger area.
point electrode an electrode having on one end a metallic point; used in applying current.
therapeutic electrode one smaller than an indifferent electrode, producing electrical stimulation in a concentrated area; called also active electrode.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

e·lec·trode

(ē-lek'trōd),
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.
[electro- + G. hodos, way]
Farlex Partner Medical Dictionary © Farlex 2012

electrode

Cardiac pacing A part of an electric conductor through which a current enters or leaves; uninsulated conductive part of a pacing lead or a unipolar implantable pulse generator's casing which makes electrical contact with tissue; electrodes are used to record the electric activity of contracting muscles; electromyographic data is collected by surface electrodes, fine wire and needle electrodes. See Ring electrode, SilverBullet electrode, Tip electrode.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

e·lec·trode

(ĕ-lek'trōd)
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.
[electro- + G. hodos, way]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Electrode

Medium for conducting an electrical current-in this case, platinum wires.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

e·lec·trode

(ĕ-lek'trōd)
Device to record one of two extremities of an electric circuit; one of two poles of an electric battery or of the end of the conductors connected thereto.
[electro- + G. hodos, way]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
However, advantage of the spherical system, supplied with the reduced number of the recording electrodes, was a symmetrical distribution of local potential extrema (maxima and minima) with regard to the center of the sphere displaying the thorax surrounding the heart.
[9] Sensory NCV were normally obtained by orthodromic technique, using supramaximal stimuli by digital ring electrode on finger and recording electrode over the nerve.
For orthodromic sensory conduction of median nerve, surface recording electrode was placed 3cm proximal to the distal wrist crease and a reference electrode at 3cm proximal to recording electrode.
The electrotonic potential produced by injecting a hyperpolarizing current pulse (100 ms, 80 nA) was recorded while the distance between the current and recording electrodes, along the ventral longitudinal midline of the heart, was varied.
It is important to ensure a supramaximal stimulation keeping the cathode close to the active recording electrode. This prevents hyperpolarization effect of anode and anodal conduction block.
Both the SFN- and CN-jitters reflect a similar physiological phenomenon (variability in the arrival time of muscle fiber action potentials to the recording electrode) and clinical significance.
A recording electrode was subsequently implanted inside the animal in the region of the superficial ophthalmic ampullary cluster.
It is important to ensure a supra maximal stimulation keeping the cathode close to the active recording electrode. This prevents hyper polarization effect of anode and anodal conduction block.
The electrical response is called compound muscle action potential (CMAP), which is the summated activity of muscle fibres in the region of recording electrode innervated by the nerve.
It worked on epilepsy patients who had already had recording electrodes placed on their brains to assess the origins of their seizures, ahead of surgery.
Surface EMGdi was measured with patients in a semi-recumbent or seated position, as previously described.[9] After skin preparation, two pairs of recording electrodes (RED DOT, USA) were separately placed at the intersection point of the sixth and eighth intercostal space and the anterior axillary line.

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