The heating of metal electrodes during rapid-rate magnetic stimulation: a possible safety hazard.

作者: Bradley J. Roth , Alvaro Pascual-Leone , Leonardo G. Cohen , Mark Hallett

DOI: 10.1016/0168-5597(92)90077-O

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摘要: The temperature of electrodes and metal disks positioned close to a coil was measured during rapid-rate magnetic stimulation. rise ranged from fraction degree almost half per stimulus pulse increased with the electrical conductivity metal, square electrode radius strength, independent thickness. During brief high-frequency train, increase each added; long, train approached steady state. After ended, an on arm cooled time constant about 45 sec. A standard silver EEG surface skin did not in enough induce burn if stimulating rate below 0.4 Hz or total number stimuli less than 20. Heating reduced by cutting gaps electrode.

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