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Transient unilateral hearing loss induced by electrocortical stimulation

From the Departments of Neurology (Drs. Sinha, Crone, and Boatman), Otolaryngology (Dr. Boatman, R. Fotta), and Neurosurgery (Dr. Lenz), Johns Hopkins University, Baltimore, MD.

Address correspondence and reprint requests to Dr. Saurabh R. Sinha, 600 North Wolfe Street, Meyer 2-147, Baltimore, MD 21287; e-mail: sasinha{at}jhmi.edu

A 32-year-old patient with seizures experienced decreased right-ear hearing during electrocortical stimulation mapping of the left lateral superior temporal gyrus. Audiometric testing under headphones confirmed a reversible, moderate unilateral hearing loss. Under binaural listening conditions, auditory comprehension was impaired at the same site, whereas word repetition, environmental sound recognition, naming, and spontaneous speech remained intact.

Supported by NIH-NIDCD grant DC005645 (D.F.B.) and NIH-NINDS grant NS40596 (N.E.C.).

Received February 24, 2004. Accepted in final form September 7, 2004.