著者

大山 健二 富岡 幸子 高坂 知節 河本 和友 郭 安雄 沖津 卓二

出版者

Japan Audiological Society

雑誌

AUDIOLOGY JAPAN (ISSN:03038106)

巻号頁・発行日

vol.26, no.2, pp.129-132, 1983 (Released:2010-04-30)

参考文献数

7

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A hundred and three ears with tinnitus were examined neurotologically and tinnitus matching tests were carefully carried out using tinnitus sythesizer (Norwest Acoustics SG-1). Then the residual inhibition (RI) was checked with one minute masking test of Vernon.RI was detected in 67% of the ears with tinnitus, and their durations were widely distributed from 3 seconds to over 2 hours, although 78% of them were within 1 minute.No correlation was observed between the “loudness of tinnitus” and the RI duration, nor between the hearing level at the tinnitus frequency and the RI duration.Mean age of the RI positive patients was 54.0 years, which was considerably higher than that of RI negative patients (47.2 years).The great majority of the RI positive patients had high frequency (>2kHz) tonal tinnitus.Further additional work seemed to be necessary to make the RI test one of the standard tests of tinnitus.

著者

沖津 卓二 草刈 潤 富岡 幸子 伊藤 和也

出版者

耳鼻咽喉科臨床学会

雑誌

耳鼻咽喉科臨床 (ISSN:00326313)

巻号頁・発行日

vol.72, no.12, pp.1591-1597, 1979

被引用文献数

1

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Auditory brainstem electric response (ABR) is generally recorded as the potential difference between the electrode on the ear lobe and on the vertex [Lobe-Vertex recording]. Among the five waves recorded the latency and the presence or absence or Wave I and V are particularly important factors.<br>The purpose of the present study was to obtain a clear appearance of Waves I and V even at the low intensity of sound by simultaneous performance of Lobe-Vertex and Membrane-Vertex recordings. As the tone stimulus is decreased toward the subjective threshold in Lobe-Vertex recording, each wave becomes smaller, and the waves, except for Wave V are frequently undetectable near the threshold.<br>On the other hand, in the recording of the potential difference between the electrodes on the posterior marginal portion of the tympanic membrane and on the vertex [Membrane-Vertex recording], Wave I is larger and Wave V smaller than that of Lobe-Vertex recording, and the clearly detectable Wave I can be obtained by the tone stimulus near the subjective threshold. Namely, the detectability of Wave I and V depends on the site of the recording electrode and there is no statistical difference between the two recording methods regarding latencies of the two waves.<br>Typical wave patterns recorded from three patients were demonstrated: two of acoustic tumor and the other of a C-P angle tumor.<br>In one patient with an acoustic tumor and the one with an C-P angle tumor, although no waves were detected in Lobe-Vertex recording, Wave I was clearly detected in Membrane-Vertex recording.<br>In the other patient with an acoustic tumor, Waves I and V were not so clearly detected in Love-Vertex recording, but in Membrane-Vertex recording, Waves I and V were clearly detected and the prolongation of the latency interval between Waves I and V could be measured.<br>From these results, it is suggested that the simultaneous Lobe-Vertex and Membrane-Vertex recording technique in ABR is most useful for the detection of cochlear nerve and the brainstem disorders.

著者

綿貫 幸三 高坂 知節 草刈 潤 古和 田勲 西条 茂 小林 俊光 新川 秀一 飯野 ゆき子 六郷 正暁 柴原 義博 富岡 幸子 佐久間 眞弓 粟田口 敏一 三好 彰 荒川 栄一 橋本 省 大山 健二 原 晃 沖津 卓二 郭安 雄

出版者

The Oto-Rhino-Laryngological Society of Japan, Inc.

雑誌

日本耳鼻咽喉科学会会報 (ISSN:00306622)

巻号頁・発行日

vol.85, no.7, pp.766-776, 1982

被引用文献数

6

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The laryngeal cysts were treated in 14 cases in our in-patient clinic during the last 9 years and 8 months between the April 1972 and the December 1981. The laryngeal cysts at the vocal cord were excluded in this study. The clinical, histological and some other findings of these cysts were briefly described. After some considerations regarding the origin and the developing mechanism of the cysts, a new classification of the laryngeal cysts was proposed as follows. <br>Laryngeal cysts. <br>1) Retention cysts: The cysts due to stenosis of the glands, their ducts, lymph vessels or other similar structures. <br>2) Epidermoid or dermoid cysts: The cysts due to stray germs, implantation or the result of down growth with separation and eventual isolation of a fragment of epidermis or dermis. They may also due to dysontogenesis of a foetal epithelial tissue. Dermoid cysts are extremely rare. <br>3) Cysts of a special origin: Branchiogenic cysts, thyroglossal duct cysts, and cysts of laryngocele origin.