Järvilehto T, Hämäläinen H, Laurinen P
Exp Brain Res. 1976 May 10;25(1):45-61. doi: 10.1007/BF00237325.
Unit activity was recorded percutaneously by microelectrodes from 69 nerve fibres innervating the hairy skin of the back of the hand in 6 awake human subjects. Twelve fibres had no receptive field on the skin, twenty-one fibres could be classified as rapidly adapting (RA) and thiry-six fibres as slowly adapting (SA) mechanoreceptive fibres. Four SA fibres has a spontaneous discharge in absence of stimulation. Mechanical thresholds of tra fibres ranged from 0.3 to 1.7 g and those of SA fibres from less than 0.1 to 1.7 g. Conduction velocities of the fibres were 22-41 m/s (RA fibres) and 10-73 m/s (SA fibres). Intensity functions of SA fibres could be described by power functions with exponents varying between 0.31-1.23. Most RA and SA fibres were entrained by vibratory stimuli. The results indicate that the receptors in the human hairy skin do not differ considerably in their characteristics from the receptors in the human glabrous skin or from animal receptors in the hairy skin.
在6名清醒的人类受试者中，通过微电极经皮记录了69条支配手背多毛皮肤的神经纤维的单位活动。12条纤维在皮肤上没有感受野，21条纤维可归类为快适应（RA）机械感受纤维，36条纤维为慢适应（SA）机械感受纤维。4条SA纤维在无刺激时具有自发放电。RA纤维的机械阈值范围为0.3至1.7克，SA纤维的阈值范围为小于0.1至1.7克。纤维的传导速度为22 - 41米/秒（RA纤维）和10 - 73米/秒（SA纤维）。SA纤维的强度函数可用指数在0.31 - 1.23之间变化的幂函数来描述。大多数RA和SA纤维被振动刺激所驱动。结果表明，人类多毛皮肤中的感受器在特性上与人类无毛皮肤中的感受器或多毛皮肤中的动物感受器没有显著差异。
