Ivazov N I
Zh Vyssh Nerv Deiat Im I P Pavlova. 1982 Jan-Feb;32(1):86-93.
In lizards Ophisaurus apodus, extinction of the motor alimentary conditioned reflex, discrimination of location of visual signals were disturbed, and the ability for reversal of the stimuli signal significance was completely lost following bilateral ablation of dorsal parts of the hippocampal cortex. Elaboration of the motor alimentary reflex was not affected. The extent of disturbances depended on the volume of hippocampectomy. The defect resulting from the bilateral lesion of the dorsal ventricular ridge (DVR) depended on the localization of the lesion. Following lesion of the lateral part of the DVR, which is the site of thalamic visual projections, in addition to disturbances of discrimination of visual signals location and of reversal of their signal significance, elaboration of a motor alimentary conditioned reflex to the location of the signal was also affected. Following a central lesion of DVR, such disturbances were less pronounced, while with medial lesions there were practically none. A conclusion has been made that disturbances of conditioned reflexes due to hippocampectomy and DVR damage, differ in their manifestation and nature: the former are similar to the defect after hippocampectomy in mammals and are, perhaps to the disturbance of the inhibition function, while the latter are primarily due to disturbance of the visual function.
在蛇蜥（Ophisaurus apodus）中，海马皮质背侧部分双侧切除后，运动性摄食条件反射的消退、视觉信号位置的辨别受到干扰，刺激信号意义的反转能力完全丧失。运动性摄食反射的形成未受影响。干扰程度取决于海马切除的范围。双侧背侧室嵴（DVR）损伤导致的缺陷取决于损伤的定位。在DVR外侧部分（丘脑视觉投射部位）损伤后，除了视觉信号位置辨别和信号意义反转受到干扰外，对信号位置的运动性摄食条件反射的形成也受到影响。在DVR中央损伤后，这种干扰不太明显，而内侧损伤时几乎没有干扰。得出的结论是，海马切除和DVR损伤导致的条件反射干扰在表现和性质上有所不同：前者类似于哺乳动物海马切除后的缺陷，可能是抑制功能受到干扰，而后者主要是由于视觉功能受到干扰。
