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Effect on Auditory Discrimination

Diran O. Mikaelian, MD; Dickens Warfield, PhD

Arch Otolaryngol. 1970;91(4):371-375.

Abstract
Five cats were trained to discriminate auditory tonal patterns, following which a partial section of the eighth nerve was made involving 50% of the auditory fibers. After section the animals maintained their pure-tone thresholds and retained the response to tonal patterns. The present experiment suggests that in peripheral disorders of hearing with normal or near normal pure-tone audiograms and poor discrimination, the discrepancy does not arise from reduced input of information to the central nervous system as a result of reduced auditory fibers.

Author Affiliations
Beirut, Lebanon; Baltimore

From the Department of Otolaryngology, American University of Beirut, School of Medicine, Beirut, Lebanon (Dr. Mikaelian) and the Division of Otolaryngology, the Johns Hopkins University School of Medicine, Baltimore (Dr. Warfield).

Footnotes
Accepted for publication Dec 29, 1969.

Read before the Johns Hopkins Otolaryngology Alumni Scientific Program in honor of John E. Bordley, MD, September 1969, Baltimore.

Reprint requests to 406 Traylor Bldg, the Johns Hopkins University School of Medicine, Baltimore 21205 (Dr. Warfield).

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