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Nobuya Yagi, MD; Hiroaki Nakatani, MD

Arch Otolaryngol Head Neck Surg. 1987;113(4):392-396.

Abstract
• Stapedial muscle electromyograms (SEMGs), obtained by an averaging technique of electrocochleography, were studied in patients with various diseases. The latency of SEMG was prolonged in incomplete facial palsy (Bell's palsy and cerebellopontine angle tumor), with stapedial reflex (SR) of a small amplitude or without SR. In otitis media with effusion, in which SR could not be obtained, SEMGs were clearly observed and showed normal waveforms and latencies. In Meniere's disease and sensorineural hearing loss, SEMG waves had normal waveforms and latencies. These results indicate that the SEMG shows a normal waveform and latency when facial nerve function is intact, and that its latency is prolonged in incomplete paralysis of the facial nerve.

(Arch Otolaryngol Head Neck Surg 1987;113:392-396)

Author Affiliations
From the Department of Otolaryngology, Faculty of Medicine, Kyoto University (Dr Yagi), and the Department of Otolaryngology, Kochi (Japan) Medical School (Dr Nakatani).

Footnotes
Accepted for publication July 14, 1986.

Reprint requests to Department of Otolaryngology, Faculty of Medicine, Kyoto University, 54 Shogoin Kawaramachi, 606 Sakyo-ku Kyoto, Japan (Dr Yagi).

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