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Article
June 1971

Diagnostic Significance of PB Word Functions

Author Affiliations

Houston
From the Department of Otolaryngology, Division of Audiology and Speech Pathology, Baylor College of Medicine, and the Methodist Hospital, Houston.

Arch Otolaryngol. 1971;93(6):573-580. doi:10.1001/archotol.1971.00770060875006
Abstract

Performance-Intensity (PI) functions for phonetically balanced (PB) words were compared in 41 patients with presumably cochlear disorder and 16 patients with retrocochlear disorder. The PI functions of all of 10 eighth nerve disorders and three of six brain stem disorders showed a pronounced rollover phenomenon. After reaching a maximum the PI function declined substantially with further increase in speech level. Implications of the phenomenon for differential diagnosis of cochlear and retrocochlear disorders are discussed.

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