STATIC AND DYNAMIC FUSIMOTOR INTERACTION AND THE POSSIBILITY OF MULTIPLE PACE-MAKERS OPERATING IN THE CAT MUSCLE-SPINDLE

被引：26

作者：

HULLIGER, M ^{[1
]}

NOTH, J ^{[1
]}

机构：

[1] UNIV OXFORD,PHYSIOL LAB,OXFORD OX1 3PT,ENGLAND

来源：

BRAIN RESEARCH | 1979年 / 173卷 / 01期

基金：

英国医学研究理事会;

关键词：

D O I：

10.1016/0006-8993(79)91092-8

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

The interaction of static and dynamic fusimotor activation on the firing of primary muscle spindle afferents has been studied in the cat soleus muscle at constant length and during sinusoidal stretching. Cycle histogram analysis revealed summation of static and dynamic action during the peak of the afferent response to sinusoidal stretching, while static action completely occluded the dynamic effect during the trough of the response. Occlusion was complete as long as, for single fusimotor activation, the static-induced trough response exceeded the dynamic-induced one by about 25%. The investigation of inter-spike interval distributions obtained at constant muscle length revealed occlusion of dynamic by static action in 8 out of 13 cases. A model of multiple spike generation in primary spindle afferents is considered which is based on two or more pacemakers arranged in parallel, with a common pacemaker in series. © 1979.

引用

页码：21 / 28

页数：8

共 21 条

[1]

BANKS RW, 1977, J PHYSIOL-LONDON, V272, pP66

[2] IDENTIFICATION OF INTRAFUSAL MUSCLE-FIBERS ACTIVATED BY SINGLE FUSIMOTOR AXONS AND INJECTED WITH FLUORESCENT DYE IN CAT TENUISSIMUS SPINDLES [J].