Cherkassky V L
Department of Movement Physiology, A.A. Bogomolets Institute of Physiology, National Academy of Sciences, Kiev, Ukraine.
Neuroscience. 1997 Jan;76(2):611-7. doi: 10.1016/s0306-4522(96)00331-4.
After-effects of preceding movement on the activity of primary spindle afferents of de-efferented cat hindlimb muscles were examined during the dynamic phases of slow linear test movements. These dynamic after-effects were compared with the static after-effects observed in the spindle activity during steady-state of the parent muscle and with hysteresis after-effects of the muscle proper. According to their pattern, the dynamic phases of the spindle and muscle reactions can be divided into two parts. During the first part (at the beginning of movement), both spindle responses and muscle state (either length or load depending on the mode of the test movement) strongly depended on the previous history of movement, being completely independent of the direction of preceding movement in the second part of the dynamic phase. These two parts were treated in terms of interaction of the movement-dependent after-effects in muscles and muscle spindle afferents. These findings allowed us to suppose that, during rather slow single-joint movements, the spindle afferents from the passive antagonist muscles can provide signals free from the effects of preceding movement.
在缓慢线性测试运动的动态阶段，研究了先前运动对去传入神经的猫后肢肌肉初级肌梭传入纤维活动的后效应。将这些动态后效应与在母肌稳态期间肌梭活动中观察到的静态后效应以及肌肉本身的滞后后效应进行了比较。根据其模式，肌梭和肌肉反应的动态阶段可分为两部分。在第一部分（运动开始时），肌梭反应和肌肉状态（取决于测试运动模式的长度或负荷）都强烈依赖于先前的运动历史，而在动态阶段的第二部分则完全独立于先前运动的方向。从肌肉和肌梭传入纤维中依赖运动的后效应的相互作用方面对这两部分进行了探讨。这些发现使我们能够推测，在相当缓慢的单关节运动期间，来自被动拮抗肌的肌梭传入纤维可以提供不受先前运动影响的信号。
