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Lookup NU author(s): Professor John-Paul TaylorORCiD
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In magnetic-stimulation studies where motor-evoked potentials (MEP) are measured on different occasions, accurate relocation of the stimulation site on the scalp is essential. Here a novel method of locating neural stimulation sites was tested and the reproducibility of MEPs in the human masseter assessed. The heads of the participants were immobilized in a plastic mask that incorporated a grid overlying the left cerebral hemisphere. A figure-of-eight coil was oriented with a micromanipulator. Electrodes were placed over the right masseter using a standardized method. Two discrete sites on the grid were stimulated alternately at threshold +10% whilst participants clenched their teeth. Recordings were repeated after the mask and electrodes had been removed and replaced. Within individual participants, the latency and amplitude of the MEP were reproducible between trials and when the mask and electrodes were replaced. The new method appears to be accurate and practical when recording longitudinal MEP data in the masseter.
Author(s): McMillan AS, Watson C, Walshaw C, Taylor JP
Publication type: Article
Publication status: Published
Journal: Archives of Oral Biology
Year: 1998
Volume: 43
Issue: 8
Pages: 665-668
Print publication date: 01/08/1998
ISSN (print): 0003-9969
ISSN (electronic): 1879-1506
Publisher: Pergamon
URL: http://dx.doi.org/10.1016/S0003-9969(98)00050-8
DOI: 10.1016/S0003-9969(98)00050-8
Notes: published erratum appears in Archives of Oral Biology 1999;44:296
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