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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 20:1970-1972 (11 1999)
© 1999 American Society of Neuroradiology

ARTICLE

Noninvasive Direct Stimulation of the Cochlear Nerve for Functional MR Imaging of the Auditory Cortex

Erich Hofmann^,a, Christine Preibisch^a, Christoph Knaus^a, Joachim Müller^a, Christian Kremser^a and Christian Teissl^a

^a From the Departments of Neuroradiology (E.H., C.P.) and Otorhinolaryngology (C.Kn., J.M.), University of Würzburg, Würzburg, Germany, and the Departments of Magnetic Resonance Imaging (C.Kr.) and Applied Physics (C.T.), University of Innsbruck, Innsbruck, Austria.

Summary: We herein present our preliminary experience with functional MR imaging of the direct electrical stimulation of the cochlear nerve using an MR imaging–compatible electrode placed in the external auditory meatus of five patients with binaural sensorineural hearing loss. The stimulator was placed outside the imager's bore, and the electrode produced virtually no susceptibility artifacts. In three of five patients, it was possible to activate the superior temporal gyrus during functional MR imaging. No side effects were observed.

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