Taylor R C
J Neurobiol. 1975 Sep;6(5):501-19. doi: 10.1002/neu.480060506.
(1) Mechanoreceptors in the crayfish antennae are divided into four functional categories: vibration (13%), bidirectional displacement (19%), unidirectional displacement (45%), and position (23%) receptors. The distribution of receptors along the length of the flagellum follows a logarithmic progression, decreasing from about 40% at the base to less than 5% at the tip. (2) Vibratory stimulation of the antennae was found to induce a traveling wave. Because of an impedance gradient along the length of the flagellum, the traveling wave moves most efficiently from base to tip. The wave was observed to travel at an average velocity of 6.0 m/sec. (3) Large deflections of the tip are not uniformly transferred to the base, but decrease logarithmically. This due to the existence of the impedance gradient. (4) Receptor output probability was found to be greatest when low frequency/high intensity stimulation was applied to the flagellar base. (5) Characteristics of large (2 cm) posterior-going deflections of the flagellar tip that are effective in producing response differences are displacement: (a) amplitude, (b) velocity, and (c) acceleration.
(1) 小龙虾触角中的机械感受器分为四个功能类别：振动感受器（13%）、双向位移感受器（19%）、单向位移感受器（45%）和位置感受器（23%）。感受器沿鞭毛长度的分布呈对数递减，从基部的约40%减少到顶端的不到5%。(2) 研究发现，触角的振动刺激会引发行波。由于沿鞭毛长度存在阻抗梯度，行波从基部到顶端的传播效率最高。观察到该波的平均传播速度为6.0米/秒。(3) 顶端的大幅度偏转不会均匀地传递到基部，而是呈对数递减。这是由于存在阻抗梯度。(4) 当对鞭毛基部施加低频/高强度刺激时，感受器输出概率最高。(5) 能有效产生反应差异的鞭毛顶端大幅度（2厘米）向后偏转的特征包括位移：(a) 幅度、(b) 速度和(c) 加速度。
