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Tinnitogram and its localising value

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Summary

81 cases of tinnitus were studied in order to find out the site of lesion. Tinnitus matching is helpful in objective assesment of tinnitus. Frequency of tinnitus is not helpful in differentiating cryptogenic from vibratory tinnitus. Coincidence of tinnitus frequency at the brows of the dip in the AC threshold curve is suggestive of cochlear lesion. Maskability indicates endorgan lesion and carries with it a better prognosis. Monotone or othe varieties of tinnitus can be masked with multiple tones in a good number of cases yielding a TINNITOGRAM. Inordinate discrepancy between the tinnitogram, AC threshold curve and the loudness of tinnitus suggests the presence of recruitment.

Endorgan lesion responds better to treatment than the ones associated with retrocochlear lesions, and hence this endeavour to localise the lesion is helpful in prognostication. Treatment and the audiological assesment regard to the effects of different types of treatment would be dealt with elsewhere.

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Authors and Affiliations

  1. All India Institute of medical Sciences, Ansari Nagar, New Delhi-16

    P. Ghose

  2. G.S.V.M., Medical College, Kanpur, U.P.

    D. S. Sardana

Authors
  1. P. Ghose
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  2. D. S. Sardana
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Ghose, P., Sardana, D.S. Tinnitogram and its localising value. Ind. J. Otol. 22, 24–30 (1970). https://doi.org/10.1007/BF03047733

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  • DOI: https://doi.org/10.1007/BF03047733

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