Young E D
Brain Res. 1980 Oct 27;200(1):23-37. doi: 10.1016/0006-8993(80)91091-4.
Electrical stimulation in the dorsal acoustic stria (DAS) and the posterior and dorsal part of the ventral cochlear nucleus (VCN) was used to identify the response properties of efferent axons from the dorsal cochlear nucleus (DCN) in unanesthetized, decerebrate cats. Responses recorded in the DCN of this preparation can be divided into two broad classes, type II/III and type IV. Results of previous studies suggest that one subclass of type II/III units, those without spontaneous activity, are inhibitory interneurons terminating on type IV cells. Most type IV units (34/43) could be antidromically activated from the DAS and most units which could be activated from the DAS were of this type (34/39), suggesting that type IV responses are recorded from the projection cells of the DCN. Few type II/III cells without spontaneous activity could be activated from the DAS (1/30). A few cells of this type (6/32) could be antidromically stimulated from regions of the posterior AVCN or dorsal PVCN through which axon collaterals of some small cell interneurons of the DCN have been reported to pass. No type IV cells could be activated from the VCN (0/22). Thus the results are consistent with some type II/III responses originating in DCN interneurons. Spontaneously active type II/III units had intermediate properties.
在未麻醉的去大脑猫中，通过对背侧听纹（DAS）以及腹侧耳蜗核（VCN）后部和背侧部分进行电刺激，来确定来自背侧耳蜗核（DCN）的传出轴突的反应特性。在此准备状态下，在DCN中记录到的反应可分为两大类，即II/III型和IV型。先前研究结果表明，II/III型单位的一个亚类，即那些没有自发活动的单位，是终止于IV型细胞的抑制性中间神经元。大多数IV型单位（34/43）可通过DAS进行逆向激活，并且大多数可从DAS激活的单位属于此类型（34/39），这表明IV型反应是从DCN的投射细胞记录到的。很少有没有自发活动的II/III型细胞可从DAS激活（1/30）。这类细胞中的少数（6/32）可通过后腹侧耳蜗核（AVCN）或背侧蜗后核（PVCN）区域进行逆向刺激，据报道，DCN的一些小细胞中间神经元的轴突侧支会通过这些区域。没有IV型细胞可从VCN激活（0/22）。因此，结果与一些起源于DCN中间神经元的II/III型反应一致。具有自发活动的II/III型单位具有中间特性。
