Tinnitus Audiogramに就て

概要

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The author masked tinnitus by pura tone and established fous types of tinnitus au- d'ograms. The tinnitus audiogram which recorded the relationship between the threshold curve of air conduction hearing and the masking curve of tinnitus showed the characteristics of tinnitus most distinctly. Curve A represents the threshold curve of airconduction and curveB, the masking curve of tinnitus. Between these types of tinnitus audiogram and the types of tinnitus classified by author according to the audiography, there were following relationships. 1)Parallel-horizontal form(Curve A and curve B run almost parallel with zero level of normal hearing)was found frequently in conductive tinnitus. 2)Parallel form(Curve A and curve Brun almost parallel, but decline in the high tone zone)was seen frequently in percep tivetinnitus. 3)High-tone convergence form(Curve A and curve B converge in the high tone zone)was seen ferquently in non-deafness tinnitus. 4)High-tone divergence form(Curve A and curve B diverge in the zone of high tone)was seen frequently in perceptive tinnitus. 5)Low-tone convergence form(Curve A and curve B converge in the low tone zone)was seen frequently in non-deafness tinnitus and conductive tinnitus. 6)lrregular form(No definite relationship between curve A and curve B)was seen frequently in perceptive tinnitus.
一般社団法人日本耳鼻咽喉科学会の論文