Krasne F B, Wine J J
J Exp Biol. 1975 Oct;63(2):433-50. doi: 10.1242/jeb.63.2.433.
Extrinsic systems were shown to control the excitability of the neurones which mediate tail-flip escape in the crayfish. Restraint suppresses the escape mediated by giant fibres and some, but not all, categories of non-giant mediated escape; autotomy of claws increases the excitability of non-giant mediated escape without affecting the lateral giant reflex. The effects of restraint on the lateral giant reflex result from inhibition rather than reduced facilitation. The inhibition descends from thoracic and higher levels, and the lateral giant escape command neurone appears to be its primary target. Inhibition may serve to shift the control of escape behaviour from short latency 'reflex' systems to more flexible 'voluntary' ones which can produce responses at times most opportune for successful escape.
外在系统被证明可控制介导小龙虾尾部翻转逃逸的神经元的兴奋性。束缚会抑制由巨纤维介导的逃逸以及部分（但并非全部）非巨纤维介导的逃逸类别；钳爪自切会增加非巨纤维介导的逃逸的兴奋性，而不影响外侧巨纤维反射。束缚对外侧巨纤维反射的影响源于抑制而非促进作用的减弱。这种抑制作用来自胸部及更高水平，外侧巨纤维逃逸指令神经元似乎是其主要靶点。抑制作用可能有助于将逃逸行为的控制从潜伏期短的“反射”系统转移到更灵活的“自主”系统，后者能够在最有利于成功逃逸的时机做出反应。
