猫脑不同皮质区域的习惯化动态

Dynamics of habituation in different cortical regions of the cat brain.

作者信息

Chernigovskii V N, Musyashchikova S S, Mokrushin A A

出版信息

Biol Bull Acad Sci USSR. 1979 Jan-Feb;6(1):1-7.

Abstract

The dynamics of habituation in the rostral part of the parietal association region and also in the first and second somatosensory areas was studied by the evoked potentials (EP) method in cats anesthetized with chloralose (80-90 mg/kg) and immobilized with flaxedil. During repeated stimulation of the splanchnic nerve brief habituation of EP developed in the cortex. It corresponded in its basic features to habituation observed in other sensory systems. On comparison of the rates of development of habituation in the primary and secondary projection zones of the splanchnic nerve in the cortex differences were found: habituation developed more rapidly in the secondary projection zones. The functional importance of this phenomenon is discussed.

摘要

采用诱发电位（EP）方法，在以水合氯醛（80 - 90毫克/千克）麻醉并用三碘季铵酚制动的猫身上，研究了顶叶联合区前部以及第一和第二躯体感觉区的习惯化动态。在内脏神经重复刺激期间，皮层中诱发电位出现短暂的习惯化。其基本特征与在其他感觉系统中观察到的习惯化相符。比较皮层中内脏神经初级和次级投射区习惯化的发展速率时，发现存在差异：次级投射区习惯化发展得更快。文中讨论了这一现象的功能重要性。