Richards W G, Ricciardi T N, Moore J W
Department of Psychology, University of Massachusetts, Amherst 01003.
Behav Brain Res. 1991 Aug 29;44(2):195-204. doi: 10.1016/s0166-4328(05)80024-5.
Spinal trigeminal nucleus pars oralis (SpoV) is anatomically linked to brain circuitry thought to subserve unconditioned and conditioned nictitating membrane responses in rabbit. Single-unit recording from SpoV and adjacent reticular formation obtained during conditioning from awake, behaving animals revealed modulation of unit firing related to CS, US, and CR occurrence. SpoV participates directly in the unconditioned response and probably relays US information to other brain areas subserving conditioning. The presence of CR-related activity suggests that SpoV may participate in the CR motor output pathway, and may also provide CR-related information to cerebellum. Sensory convergence and CR-related activity in reticular formation mark this structure as a candidate locus of primary neuronal plasticity in this example of conditioning.
三叉神经脊束核吻侧部（SpoV）在解剖学上与被认为参与兔子非条件和条件性瞬膜反应的脑回路相连。在清醒、行为中的动物进行条件反射期间，从SpoV和相邻网状结构进行的单单位记录显示，与条件刺激（CS）、非条件刺激（US）和条件反应（CR）的出现相关的单位放电受到调制。SpoV直接参与非条件反应，并且可能将US信息传递给其他参与条件反射的脑区。CR相关活动的存在表明，SpoV可能参与CR运动输出通路，并且还可能向小脑提供CR相关信息。网状结构中的感觉汇聚和CR相关活动表明，在这个条件反射例子中，该结构是主要神经元可塑性的候选位点。
