Study of emission cochleogram in patients with acoustic neuromas.

DOI Open Access

Bibliographic Information

Other Title
  • 聴神経腫よう症例のＥｍｉｓｓｉｏｎ　ｃｏｃｈｌｅｏｇｒａｍに関する検討

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Description

The emission cochlegram was investigated in 11 cases of surgically proven unilateral acoustic neuroma. Stimulus sounds were tone-bursts with the duration of 3ms at 5 frequencies between 1kHz and 4kHz. The results obtained were as follows;<br>1) The emission cochleograms showed similar configurations in the unaffected ears, but showed various configurations in the tumor-bearing ears.<br>2) The averaged emission cochleogram of the unaffected ears showed the high-tone abrupt loss type of configuration, while that of the tumor-bearing ears showed the high-tone gradual loss type due to the elevation of pseudothreshold between 1kHz and 2kHz.<br>3) The comparison between pure tone audiogram and emission cochleogram could enable to speculate the pathophysiology of hearing loss in each case of acoustic neuromas.<br>4) The pathophysiology of hearing loss might differ on the different cochlear partitions in some tumor-bearing ears.

Journal

  • AUDIOLOGY JAPAN

    AUDIOLOGY JAPAN 33 (2), 169-176, 1990

    Japan Audiological Society

Keywords

Details 詳細情報について

  • CRID
    1390001204838576768
  • NII Article ID
    130003711805
  • DOI
    10.4295/audiology.33.169
  • ISSN
    18837301
    03038106
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • Abstract License Flag
    Disallowed

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