Pubols B H
Robert S. Dow Neurological Sciences Institute, Good Samaritan Hospital and Medical Center, Portland, OR 97209.
Neurosci Lett. 1990 Mar 2;110(1-2):86-90. doi: 10.1016/0304-3940(90)90792-8.
The effects of dynamic force and dynamic displacement on single unit discharge rate during ramp stimulation were examined in 10 raccoon and 8 squirrel monkey slowly adapting Type I (SAI) mechanoreceptive afferent fibers, all having receptive fields on glabrous skin of the hand. In all 18 cases, power function exponents were higher for effects of dynamic displacement than for effects of dynamic force on discharge frequency. Thus, these SAI mechanoreceptors are more sensitive to variations in dynamic displacement than to variations in dynamic force. This differential sensitivity may be explained by the fact that the relationship between dynamic force and dynamic displacement is, itself, nonlinear, dynamic displacement being a power function of dynamic force, with exponents less than 1.0.
在10只浣熊和8只松鼠猴的缓慢适应I型（SAI）机械感受传入纤维上，研究了斜坡刺激期间动态力和动态位移对单个单位放电率的影响，所有这些纤维的感受野都在手的无毛皮肤上。在所有18个案例中，动态位移对放电频率的影响的幂函数指数高于动态力对放电频率的影响的幂函数指数。因此，这些SAI机械感受器对动态位移变化的敏感性高于对动态力变化的敏感性。这种差异敏感性可能是由于动态力和动态位移之间的关系本身是非线性的，动态位移是动态力的幂函数，指数小于1.0。
