蜚蠊单个棘—钟形感器冲动发放的特性

本文分析了蜚镰后胸足单个棘一钟形感器对机械位移刺激的反应模式以及冲动发放的特性.结果证明该感器是一种适应较慢的相位性触觉感受器,对触刺激有相当稳定的反应.

THE IMPULSE DISGHARCE PROPERTIES OF THE SINGLE SPINE-CAMPANIFORM SENSILLUM OF COCKROACH (PERIPLANETA AMERICANA L.)

The single spine-campaniform sensilla on the tibiae of the cockroach metathoracic Iegs were stimulated by a mechanical displacement of a probe, which was produced by a electromagnetic pusher when a square wave was fed to it. The evoked impulse discharges were recorded with two insect pins inserted near the nerve axons.In this paper we have analysed the impulse discharge properties of this sensillum,i.e., its response model, the relationships between stimulus intensity and impulses frequency, between frequencies of stmulation and impulses frequency, and the discharge property during the stimulus maintained.It was found that under this experimental conditions the impulse discharge properties were relatively stable.It is suggested that this sensillum is a phasic one with relative slow adaptation.