Cabelguen J M, Orsal D, Perret C
Brain Res. 1984 Jul 23;306(1-2):359-64. doi: 10.1016/0006-8993(84)90387-1.
In the acute decorticate cat, the discharge patterns of single spindle primary afferents from various forelimb muscles during locomotion have been examined in relation to the extrafusal activity. In a given muscle under isometric conditions, the activation of spindle primary endings was closely related to that of extrafusal muscle fibers. Since this increase in spindle discharge could occur in the absence of detectable electromyographic activity in the parent muscle, it resulted, at least to some extent from an enhanced activity in gamma efferents. The data are discussed in relation to previous studies of forelimb efferent activity and hindlimb fusimotor control in the same preparation.
在急性去皮质猫中，已经研究了在运动过程中来自各种前肢肌肉的单根梭内初级传入纤维的放电模式与肌梭外活动的关系。在等长条件下的特定肌肉中，梭内初级末梢的激活与肌梭外肌纤维的激活密切相关。由于在母肌中没有可检测到的肌电图活动时也可能发生这种梭内放电增加，因此至少在一定程度上是由γ传出纤维活动增强所致。结合之前在同一标本中对前肢传出活动和后肢肌梭运动控制的研究对这些数据进行了讨论。
