The mechanics of the labyrinth otoliths
The mechanics of the labyrinth otoliths
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DOI：
10.3109/00016485009118384
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发表时间：
1950-01-01
期刊：
影响因子：
--
通讯作者：
DeVRIES, H.
中科院分区：
文献类型：
--
作者：
DeVRIES, H.
通过拍摄 X 射线照片，对一些鱼类（梭子鱼、鲈鱼、颈鳍鱼、丁鳅）迷宫中耳石的位移进行了定量测量。使用了幸存的完整头部。重力引起的位移约为0.1毫米。对于（大）球囊耳石，大约 0.005 毫米。为小椭圆囊和拉根耳石。对于所有耳石，1 达因力引起的位移约为 0.006 毫米。施加离心力来测量囊和囊的小位移。这些大加速度（11 g）并没有产生相应更大的耳石囊位移。对于耳石囊，还测量了对纤维化的响应。这些测量表明耳石的运动几乎受到严重抑制。事实证明“指示时间”约为0.02秒。对于球囊和大约 0.005 秒。对于小耳石。系数。发现耳石和上皮之间的胶状物质的内摩擦力η约为水的500倍。这也符合半规管和耳蜗的已知数据。 ||摘要作者：L. B. W. Jongkees
Quantitative measurements were made of the displacements of the otoliths in the labyrinths of some fishes (pike, perch, ruff, tench) by making X-ray photographs. Surviving intact heads were used. The displacements caused by gravitational forces were about 0.1 mm. for the (large) sacculus otoliths and about 0.005 mm. for the small utriculus and lagena otoliths. For all otoliths the displacement caused by a force of 1 dyne is about 0.006 mm. Centrifugal forces were applied to measure the small displacements of utriculus and lagena. These large accelerations (11 g) did not produce proportionally larger displacements of the sacculus otolith. For the sacculus otolith the response to fibrations was also measured. These measurements indicated that the motion of the otolith is nearly critically damped. The "time of indication" proves to be about 0.02 sec. for the sacculus and about 0.005 sec. for the small otoliths. The coeff. of internal friction [eta] of the jelly like substance between otoliths and epithelium is found to be about 500 x [eta] water. This would also fit the data known for the semicircular canals and for the cochlea. || ABSTRACT AUTHORS: L. B. W. Jongkees