Loudness Recruitment Research Articles

IX. Loudness Recruitment in Hearing Impairments of Different Types and its Effect on the Intelligibility of Speech

IX. Loudness Recruitment in Hearing Impairments of Different Types and its Effect on the Intelligibility of Speech

Some Recent Work on Auditory Adaptation and its Relationship to the Loudness Recruitment Phenomenon

In the course of previous investigations, Dix, Hallpike, and Hood have concluded that the phenomenon of loudness recruitment is attributable to disordered function resulting from injury or disease of the hair cells of Corti's organ. In the present paper, an account is given of an experimental study of certain loudness changes caused by adaptation of the hair cell responses to pure tone stimulation. Two outstanding characteristics of the adapted state are defined: “on-effect normality” and “relapse.” Both resemble very closely those described by Matthews in the case of adaptation occurring the muscle stretch receptors of the frog. Further studies in a number of human subjects show that both of these characteristics are exhibited regularly by the unadapted hair cell responses of individuals suffering from degenerative changes of the hair cells. These studies appear to establish a very close similarity between “on-effect normality” occurring in the case of the adapted normal sense organ and the phenomenon of loudness recruitment, as demonstrated by the alternate binaural loudness balance procedure of Fowler in the case of the unadapted but diseased sense organ. The experimental findings are considered to favor the view that loudness recruitment is one element of a complex disturbance of cochlear function due to disease or injury of specific elements of the cochlear sensory apparatus, namely the hair cells of Corti's organ.

Recruitment of loudness in the differential diagnosis of end‐organ and nerve fibre deafness

The LaryngoscopeVolume 61, Issue 5 p. 400-414 Article Recruitment of loudness in the differential diagnosis of end-organ and nerve fibre deafness† Lee G. Eby M.D., Lee G. Eby M.D. Rochester, MinnSearch for more papers by this authorHenry L. Williams M.D., Henry L. Williams M.D. Rochester, MinnSearch for more papers by this author Lee G. Eby M.D., Lee G. Eby M.D. Rochester, MinnSearch for more papers by this authorHenry L. Williams M.D., Henry L. Williams M.D. Rochester, MinnSearch for more papers by this author First published: May 1951 https://doi.org/10.1288/00005537-195105000-00002Citations: 32 † Read at the meeting of the Middle Section of the American Laryngological, Rhinological and Otological Society, Inc., Cleveland, Ohio, Jan. 15, 1951 AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume61, Issue5May 1951Pages 400-414 RelatedInformation

Recruitment phenomenon in craniocerebral trauma; report of representative cases.

theory of loudness recruitment has been formulated by Fowler. 1 Clinically, this phenomenon is utilized to distinguish between a conduction impairment and a defect. In the words of Fowler, The recruitment of loudness with intensity enables one to diagnose obstruction from deafness. By means of the loudness balance test, it has become possible to make a quantitative determination of the degree of recoupment. results vary. Most patients with nerve deafness of undetermined origin show considerable recruitment to sounds of the higher frequency range; some patients possess this factor to a minimal extent; a few are devoid of it altogether. In acoustic trauma, the 4096 wedge is usually devoid of this phenomenon. individual with a high tone impairment frequently possesses this factor to a remarkable degree. In a series of 20 patients with degeneration of the acoustic nerve, studied by Dix, Hallpike and Hood, 2 slight loudness recruitment

On the Differential Diagnosis, by Fowler's "Loudness Recruitment" Test, of Changes in the Cochlear Nerve with Reference to the "Loudness Shock Test"

On the Differential Diagnosis, by Fowler's "Loudness Recruitment" Test, of Changes in the Cochlear Nerve with Reference to the "Loudness Shock Test"

Observations upon the Loudness Recruitment Phenomenon, with Especial Reference to the Differential Diagnosis of Disorders of the Internal Ear and VIIIth Nerve

Observations upon the Loudness Recruitment Phenomenon, with Especial Reference to the Differential Diagnosis of Disorders of the Internal Ear and VIIIth Nerve

Observations upon the Loudness Recruitment Phenomenon, with Especial Reference to the Differential Diagnosis of Disorders of the Internal Ear and VIII Nerve

Observations upon the Loudness Recruitment Phenomenon, with Especial Reference to the Differential Diagnosis of Disorders of the Internal Ear and VIII Nerve