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Cathode |
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cathode /cath·ode/ (kath´od) the electrode at which reduction occurs and to which cations are attracted.cathod´ic Cathode The negative electrode from which an electromagnetic current flows. Mentioned in: Bone Growth Stimulation cathode (kath´ōd), n a negative electrode from which electrons are emitted and to which positive ions are attracted. In radiographic tubes, the cathode usually consists of a helical tungsten filament, behind which a molybdenum reflector cup is located to focus the electron emission toward the target of the anode. cathode ray tube (CRT), n a vacuum tube in which a beam of electrons is focused to a small point on a luminescent screen and can be varied in position to form a pattern. cathode 1. the negative electrode, from which electrons are emitted and to which positive ions are attracted. 2. the electrode through which current leaves a nerve or other substance. cathode beam, cathode ray the beam of electrons, accompanied by high electrical potential which flows from the cathode to the anode in the x-ray tube and interacts with the tungsten target to produce x-rays. cathode filament the source of electrons in the cathode tube that interacts with the anode target to produce x-rays. |
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? Mentioned in | ? References in periodicals archive | |
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34) They performed a series of studies using high-voltage cathodal ES (120 pps, 10% below visible contractions) on frog and rat models and found that up to four 30-minute treatment sessions with either 30- or 60-minute rest periods between treatments curbed edema formation for up to 24 hours after injury. 11,22) In contrast, other investigators showed that pulsed monophasic cathodal stimulation (high-voltage pulsed current [HVPC]) with a pulse duration of 13 microseconds (twin peaks of 5 and 8 microseconds) limits edema in frogs and rats with either crush injury or hyperflexion injury. Thus, both hands received anodal and cathodal TWG at the same dosage of current. |
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