前言研究不同发育水平动物的高级神经活动,对于解决兴奋过程与抑制过程的进化问题是相当重要的。(1923)首先在鱼头上研究了防御性条件反射,后来又有许多工作者研究了不同各类的丙栖类的条件反射。然而,由于他们采用了不同的实验方法,得到的结果也不一致。因此,有关两栖类条件反射方面的问题并未得到十分肯定的结论。加以近年来对于两栖类高级神经活动的研究和认识与鱼类相比,显然非常不 Preface Researching advanced neuronal activity in animals of different developmental levels is of considerable importance in addressing the evolutionary process of excitability and repression. (1923) first studied defensive conditional reflections on the fish head, and many workers later studied the conditioned reflections of various classes of prophylaxis. However, due to the different experimental methods they adopted, the results obtained were also inconsistent. As a result, the issue of amphibian conditioned reflections has not been conclusively confirmed. In recent years, the study and cognition of advanced neuronal activities in amphibians is obviously not very significant