虎皮鹦鹉腿部的赫氏小体及切断传入神经前后振动敏感性的比较研究  

LEG HERBST CORPUSCLE IN BUDGERIGAR (MELOPSITTACUS UNDULATUS) AND A COMPARATIVE STUDY OF THE VIBRATION SENSIBILITY BEFORE AND AFTER AFFERENT DENERVATION

作　　者：唐欢[1] 徐慕玲[1] 陈浩[1] 杨新宇[1] 蒋锦昌[1] 

机构地区：[1]中国科学院生物物理研究所

出　　处：《动物学报》1997年第2期140-145,共6页ACTA ZOOLOGICA SINICA

基　　金：地震科学联合基金

摘　　要：虎皮鹦鹉（Ｍｅｌｏｐｓｉｔａｃｕｓｕｎｄｕｌａｔｕｓ）腿部的赫氏小体（Ｈｅｒｂｓｔ）的分布长度约６５～８０ｍｍ，平均含１２５个感受单元。感受单元的宽度较均一，平均为３６μｍ。但感受单元的长度呈不规则分布，前、中和后段内感受单元的长度分别平均为１７３±１３μｍ、２３２±６μｍ和２５３±２７μｍ。在前兆地声优势频段内振幅３～１０μｍ的１００、１３０、１７０和２００～２５０Ｈｚ正弦振动刺激下，腿部赫氏小体传入神经切断动物的反应率比正常动物下降约７５％，基本上失去对该频段内振动刺激的敏感反应。In budgerigars, the leg Herbst corpuseles are about 6 5～8 0mm in the distribution length, and contain 125 receptor units on an average. The widths of receptor units are relatively uniform being 36μm on an average. But the lengths of receptor units present irregular distribution, and those in the anterior, middle and posterior segments are 173±13,232±6 and 253±27μm, respectively. Under sine vibration stimlations of 3～10μm at 100, 130, 170 and 200～250Hz within the dominant frequency band of the precursory geo sound, the response rates of animals with afferent nerve out off from leg Herbst corpuscle decrease about 75% as compared with those of intact animals, and the sensitive responses to vibration stimulations within the frequency band are basically lost.

关 键 词：虎皮鹦鹉 赫氏小体 传入神经 切断 振动敏感性 

分 类 号：Q959.731[生物学—动物学]