Rubin A M, Liedgren S R, Odkvist L M, Milne A C, Fredrickson J M
Acta Otolaryngol. 1977 Nov-Dec;84(5-6):328-37. doi: 10.3109/00016487709123974.
The labyrinthine input to the vestibular nuclei was investigated in 24 awake cats. Stimulus consisted of electrical shocks given through bipolar silver wire electrodes, implanted in the utricular and lateral ampullar nerves. Throughout the vestibular nuclei, single units were recorded extracellularly with glass micropipettes filled with Fast Green. The tracts of the penetrating electrodes were identified histologically. In all four nuclei units responding to both labyrinths outnumbered unilaterally responding neurones with certain differences between the individual nuclei. Excitatory as well as inhibitory responses were observed, polysynaptic being more common than mono- or disynaptic ones. No monosynaptic contralateral responses were seen. The latency distribution of contralateral responses closely mirrored that of ipsilateral responses within each nucleus. Both excitatory and inhibitory responses fell into relatively segregated populations, based upon latency distribution. This implies separate pathways for labyrinthine input to the vestibular nuclei.
在24只清醒猫中研究了前庭核的迷路传入。刺激由通过植入椭圆囊和外侧壶腹神经的双极银丝电极施加的电休克组成。在前庭核内，用充满固绿的玻璃微电极细胞外记录单个神经元。通过组织学方法确定穿透电极的轨迹。在所有四个核中，对双侧迷路有反应的神经元数量超过单侧反应的神经元，各个核之间存在一定差异。观察到了兴奋性和抑制性反应，多突触反应比单突触或双突触反应更常见。未观察到单突触对侧反应。每个核内对侧反应的潜伏期分布与同侧反应的潜伏期分布密切相似。基于潜伏期分布，兴奋性和抑制性反应都分为相对独立的群体。这意味着前庭核的迷路传入有不同的通路。
