著者

湊川 徹 町塚 博文 稲守 徹 西村 善彦

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Ear Research Japan (ISSN:02889781)

巻号頁・発行日

vol.19, no.1, pp.77-79, 1988 (Released:2011-08-11)

参考文献数

6

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Developmental anatomy of the tympanic membrane and its relation with the malleus handle was studied using fetal temporal bone specimens. During 16th week of gestation the intermediate mesodermal layer which consist of two laminas-radial layer laterally and circular layer medialy-originate around the tympanic ring as loose connective tissue. The inner circular layer hold the malleus handle and fuses with the periosteum (or perichondrium). The outer radial layer which is thicker than the outer circular layer contains copious blood vessels. After 30th week of gestation conjunction between malleus handle and inner circular layer become loose and lost except outer surface of the malleus handle. Only at the tip of the malleus periosteum is thick and hold by the circular layer which seems to become the umbo.

著者

涌谷 治夫 稲守 徹 森 裕司 町塚 博文 雲井 健雄

出版者

The Society of Practical Otolaryngology

雑誌

耳鼻咽喉科臨床 補冊 (ISSN:09121870)

巻号頁・発行日

vol.1986, no.4, pp.9-14, 1986

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Thirty-five normal subjects were stabirographically studied using a force plate on the rolling platform. The rolling was controled manually between 0 and 0.6 Hz applied at random. The upper limit of power spectrum and phase shif between rolling and body movements were measured.<BR>These parameters were similar to the results of constant rolling of above 0.2 Hz and were influenced by the rolling of above 0.2 Hz in the random rolling.<BR>As the rolling was controled manually, the power spectrum of rolling was not stable and the content of random rolling changed at every measurment. The motor of rolling platform made noise during acceleration and deceleration allowing the subjects know the rythm of rolling.<BR>These problem indicated that this technique was not adequate for the prevention of forecasting behavior.