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Regular Departments
September 1962

Medical Audiology

Arch Otolaryngol. 1962;76(3):283-287. doi:10.1001/archotol.1962.00740050291014

While no major break-throughs appeared in medical audiology during 1961, many articles were exciting and some provocative. After believing for so many years that a subject's pure tone threshold improves with repetition, Loeb and Dickson1 point out that the improvement occurs only in the low tones. The reason for this, they suggest, is the subject's inability to discriminate between noises normally present in the head (which exist only at low frequencies) and an external signal in the same frequency range. The subject will have much less trouble in distinguishing a high-frequency signal because the low-frequency physiologic noise is not confused with it. Nevertheless, when the signal is low pitched, the patient learns, with practice, to discriminate it from the bodynoise in the same frequency range.

In addition to the long list of causes of hearing impairment we can now add one described by Ventry, et al.2 who showed