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Article
October 1954

THE CONDUCTIVE MECHANISM OF HEARING AND RECRUITMENT

AMA Arch Otolaryngol. 1954;60(4):453-458. doi:10.1001/archotol.1954.00720010465007
Abstract

INTRODUCTION  IT IS THE purpose of this paper to present to its readers a working hypothesis which may further aid in the interpretation of audiologic data. It deals with two factors which, by and large, are considered to be somewhat unrelated: the conductive mechanism of hearing and auditory recruitment.

THE CONDUCTIVE MECHANISM OF HEARING  The conductive mechanism of hearing is usually considered to consist of the outer and middle ears, along with their component parts and contents; it is my suggestion that a different, more recently described, concept be established. Rather than consider the conductive system as constituting anatomical structure, let us consider the fact that this system is far more inclusive; actually, it consists primarily of the sound-conducting media.For purposes of simplicity, the conductive mechanism of hearing can be divided into three parts: (1) air medium, (2) impedance matching mechanism, and (3) fluid medium.Air Medium.—Under normal

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