摘要
本文用电生理方法研究了电感受器的自发和诱发活动,结果是:(1)18尾鱼的126个感官的自发发放率自15—85脉冲/秒,众值为50脉冲/秒.(2)分析了正弦电刺激下反应的周期直方图和脉冲间隔直方图,确定了频率特性.频率响应曲线呈带通型,带宽为5—30Hz,最适频率在15Hz 附近.(3)向坛内注入正弦电流测量了47个感官的反应阈值,其中35个感官(占74%)的反应阈值低于0.1nA,9个感官(占19%)低于0.01nA,分别相当于水中电场强度61μV/cm 和6.1_μV/cm.
The spontaneous and evoked activity of electroreceptors were electrophysiologically studied. The results are:1. The spontaneous discharge rate ranged from 15 to 85 imp/s with a modus of 50 imp/s for 126 organs of 18 animals.2. By analysis of periodic histograms and interspike interval histograms of responses to sinusoidal electrical stimulations, the frequency response characteristic was determined . The frequency response curve shows a band pass type, the band width ranged from 5Hz to 30Hz and the best frequency is around 15Hz.3. The thresholds of responses for 47 organs were measured by injection of sinusoidal current into the ampulla. The threshold values were less than 0.1nA ( 61μV/cm) for 35 organs (74% ), and less than 0.01nA( 6.1μV/cm)for 9 organs (19% ).
出处
《地震学报》
CSCD
北大核心
1991年第3期380-386,共7页
Acta Seismologica Sinica
基金
地震科学联合基金会
