Otis T S, Gilly W F
Hopkins Marine Station of Stanford University, Pacific Grove, CA 93950.
Proc Natl Acad Sci U S A. 1990 Apr;87(8):2911-5. doi: 10.1073/pnas.87.8.2911.
Recordings of stellar nerve activity were made during escape responses in living squid. Short-latency activation of the giant axons is triggered by light-flash stimulation that elicits a stereotyped startle-escape response and powerful jet. Many other types of stimuli produce a highly variable, delayed-escape response with strong jetting primarily controlled by a small axon motor pathway. In such cases, activation of the giant axons is not necessary for a vigorous escape jet. When they are utilized, the giant axons are not activated until well after the non-giant system initiates the escape response, and excitation is critically timed to boost the rise in intramantle pressure. Squid thus show at least two escape modes in which the giant axons can contribute in different ways to the control of a highly flexible behavior.
在活体鱿鱼的逃避反应过程中记录了星状神经活动。强光刺激引发刻板的惊吓逃避反应和强力喷射，从而触发巨轴突的短潜伏期激活。许多其他类型的刺激会产生高度可变的延迟逃避反应，强力喷射主要由一条小轴突运动通路控制。在这种情况下，强力逃避喷射并不一定需要巨轴突的激活。当使用巨轴突时，直到非巨轴突系统启动逃避反应后很久，巨轴突才会被激活，并且兴奋的时间非常关键，以促进外套腔内压力的升高。因此，鱿鱼至少表现出两种逃避模式，在这些模式中，巨轴突可以以不同方式对高度灵活行为的控制做出贡献。
