Cattaert D, elManira A, Marchand A, Clarac F
CNRS LNF2, Marseille, France.
Neurosci Lett. 1990 Jan 1;108(1-2):81-7. doi: 10.1016/0304-3940(90)90710-q.
In an in vitro preparation of the crayfish thoracic locomotor system, intracellular recordings have been performed from terminals of a leg joint coxo-basipodite chordotonal organ (CB). In the terminals, some depolarizing events are observed which display all the characteristics of the primary afferent depolarizations (PADs). PADs reduce the amplitude of orthodromic sensory spikes, and thus correspond to a presynaptic inhibition. PADs are tonic in a tonic preparation, and phasic (phase locked) in a rhythmic preparation. A control of the incoming information from the CB could thus be performed by the central nervous system during fictive locomotion.
在小龙虾胸段运动系统的体外制备中，已从腿部关节基节-底节弦音器（CB）的终端进行了细胞内记录。在这些终端中，观察到一些去极化事件，它们表现出初级传入去极化（PADs）的所有特征。PADs降低了顺向感觉尖峰的幅度，因此对应于突触前抑制。在紧张性制备中，PADs是持续性的，而在节律性制备中是相位性的（相位锁定）。因此，在虚拟运动期间，中枢神经系统可以对来自CB的传入信息进行控制。
