Emonet-Dénand F, Laporte Y, Tristant A
Brain Res. 1980 Jun 9;191(2):551-4. doi: 10.1016/0006-8993(80)91304-9.
The responses of primary and secondary endings of de-efferented soleus spindles to small amplitude periodic stretches superimposed on slow ramp stretches have been studied. For primary endings, the responses become progressively larger especially during the last period of the ramp whereas for secondary endings, after an initial period of moderate growth, the amplitude of the responses display a relative reduction precisely when the responses of the primary endings are the largest. These differences can be interpreted in terms of progressive increase in stiffness of the striated polar portions of the intrafusal muscle fibers.
已对去传入比目鱼肌梭的初级和次级末梢对叠加在缓慢斜坡拉伸上的小幅度周期性拉伸的反应进行了研究。对于初级末梢，反应逐渐变大，尤其是在斜坡的最后阶段，而对于次级末梢，在最初适度增长阶段之后，恰好在初级末梢反应最大时，反应幅度呈现相对减小。这些差异可以根据肌梭内肌纤维横纹状极部刚度的逐渐增加来解释。
