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Paul R. Kileny, PhD; John L. Kemink, MD

Arch Otolaryngol Head Neck Surg. 1987;113(10):1072-1077.

Abstract
• Electric middle-latency auditory evoked responses (EMLRs) to transtympanic promontory stimulation were obtained from 19 of 22 ears of profoundly hearing-impaired patients evaluated for cochlear implant candidacy. The EMLRs were characterized by positive polarity peaks with latencies ranging from 20 to 30 ms, with the majority of responses exhibiting peaks in the range of 26 to 30 ms. Generally, the configuration of the EMLRs closely resembled the configuration of acoustic MLRs. While in most cases, behavioral thresholds to identical promontory stimulation were slightly lower, EMLR thresholds closely approximated behavioral electrical promontory thresholds. The EMLR thresholds correlated positively with implanted thresholds and exhibited a negative correlation with implanted dynamic current ranges.

(Arch Otolaryngol Head Neck Surg 1987;113:1072-1077)

Author Affiliations
From the Department of Otolaryngology, Head and Neck Surgery, University of Michigan Hospitals, Ann Arbor.

Footnotes
Accepted for publication July 2, 1987.

Presented at the Tenth Annual Midwinter Meeting of the Association for Research in Otolaryngology, Clearwater Beach, Fla, Feb 3, 1987.

Reprint requests to Department of Otolaryngology, University of Michigan Hospitals, TC-1904, Box 0312, 1500 E Medical Center Dr, Ann Arbor, MI 48109-0312 (Dr Kileny).

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