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pp.430-433
Published Date 1954/9/20
DOI https://doi.org/10.11477/mf.1492201186

 TAKAHASHI finds that, by making examination of number of children in the primary grades with use of 4CA and D9 audiometers whose losses are due to perforated ear drums or obstructive lesions of the Eustachian tube, there is a corresponding diminution of hearing in both, the speech and pure tone when that loss is due to perforated drum. But, when it is due to obstructive lesion in the Eustachian tuba the results of these two tests, speech and pure tone hearing, are more apt to be in disagreement than by being in agreement. Patients with obstructive lesions are enabled to hear speech better than those of the other group who are equally affected with a considerable amount of loss as tested by pure tone hearing but, there are greater tendency among them to misinterpret the words that are heard.


Copyright © 1954, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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