Kniazev A N
Zh Evol Biokhim Fiziol. 1978 Jan-Feb;14(1):93-5.
Naked tungsten microelectrodes were introduced through the chitinous wall close to the cell body of the receptor cells of trichoid hair sensillae, and responses to airpuffs, and rectangular, and trapezoidal displacements of the hair were recorded. Receptors of dorsal zone are activated during lateral deflection, those of ventral zone--during medial deflection and receptors of medial and lateral zones--during deflection to the cercal base. Sensitivity of receptors to the air-puffs is a function of hair length, the largest hairs being most sensitive. During trapezoidal displacement of the hair with different velocities of the slope, discharge frequency of the dynamic response is a function of velocity and angle in the range of angles up to 3-5 degrees (fig. 1). Discharge frequency of the stationary phase (corresponding to the plateau of the stimulus) is mainly a function of velocity in the range up to 6 degrees (fig. 2). The presence of sensillae with different hair length, and hence sensitivity, and definite directionality of receptors in different hair length, and hence sensitivity, and definite directionality of receptors in different zones may provide a basis for amplitude, velocity and direction discrimination of air-puffs or low-frequency mechanical stimulation by the cercal system of crickets.
将裸钨微电极穿过靠近毛状感受器受体细胞胞体的几丁质壁，并记录对气吹、毛发的矩形和梯形位移的反应。背区的感受器在侧向偏转时被激活，腹区的感受器在内侧偏转时被激活，内侧和外侧区的感受器在向尾基部偏转时被激活。感受器对气吹的敏感性是毛发长度的函数，最长的毛发最敏感。在毛发以不同斜率速度进行梯形位移时，动态反应的放电频率是速度和角度在高达3 - 5度范围内的函数（图1）。稳定期（对应于刺激的平台期）的放电频率主要是速度在高达6度范围内的函数（图2）。存在具有不同毛发长度因而敏感性不同的感受器，以及不同区域中感受器明确的方向性，这可能为蟋蟀尾须系统对气吹或低频机械刺激的幅度、速度和方向辨别提供基础。
