Some Observations on the Forces Acting on Neuromasts in Fish Lateral Line Canals
Some Observations on the Forces Acting on Neuromasts in Fish Lateral Line Canals
复制标题
鱼类侧线管神经丘受力的一些观察
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
J. Gray
中科院分区：
文献类型：
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作者：
E. Denton;J. Gray
有充分的理由将对侧线系统的刺激测量为压力梯度（Denton和Gray， 1988），最有可能对侧线感觉器官有用的自然刺激是鱼自身游动运动产生的局部压力梯度和外部来源产生的局部压力梯度。在接下来的内容中，我们将假设(1)对管状神经桅杆的有效刺激将是产生丘体相对于管壁运动的刺激，(2)移动丘体的力必须通过管状神经桅杆所含的液体传递到丘体，(3)这种液体和神经桅杆丘体的位移将由沿携带神经桅杆的短段管状神经桅杆的净压力梯度引起。这种净梯度可以根据管道附近介质相对于鱼表面的局部加速度来测量（Denton和Gray， 1983）。由此可见，如果与侧线相邻的介质以与携带侧线的特定“部分”的鱼的表面完全相同的方式移动，则该部分的神经杆将不会受到刺激。当考虑外部源时，对侧线的刺激通常与声面的加速度成正比（Gray 1984; Kalmijn 1988, Chapter 9）。
There are good reasons for measuring stimuli to lateral-line systems as pressure gradients (Denton and Gray 1988), the most likely useful natural stimuli to lateral line sense organs being local pressure gradients produced by a fish’s own swimming movements and local pressure gradients produced by external sources. In what follows we shall assume that (1) the effective stimulus for a canal neuromast will be one that produces a movement of the cupula relative to the wall of the canal, (2) the force moving the cupula must be transmitted to the cupula through the liquid that the canal contains, and (3) displacements of such liquid and the cupula of the neuromast will arise from net pressure gradients along the short stretch of canal carrying the neuromast. This net gradient can be measured in terms of the local accelerations of the medium adjacent to the canal relative to the surface of the fish (Denton and Gray 1983). It follows that if the medium adjacent to the lateral line moves in exactly the same way as the surface of the fish that carries a particular “section” of lateral line, the neuromast in this section will not be stimulated. When considering an external source, the stimuli to lateral lines will often be proportional to the accelerations of the sonic surface (Gray 1984; Kalmijn 1988, Chapter 9)