Simeonova B A, Barmintsev V A, Luk'ianova A S, Gusel'nikov V I
Neirofiziologiia. 1980;12(2):182-91.
Evoked responses in the dogfish tectum opticum were studied during electrical stimulation of the spinal cord, its dorsal roots and ramus ophthalmicus of the facial nerve. Recordings were obtained from different depth as well as from different points on the tectum surface. Evoked responses could be detected mainly on the contralateral side of the tectum opticum either as slow positive (spinal cord stimulation) or negative-positive (facial stimulation) waves which were preceeded by one or two fast, probably, presynaptic deflections and followed by a very slow low-amplitude negative wave. The evoked responses possessed the properties of tectal postsynaptic responses, being somatotopically distributed on the surface and reversely represented in the inner part of the tectal lamina. Projections of different inputs were widely overlapped, but specific areas of maximal activity were presented. These findings evidence that the tectum opticum performs a double function: a primary projecting and an integrative centre.
在电刺激狗鱼的脊髓、其背根和面神经眼支期间，对狗鱼视顶盖的诱发反应进行了研究。记录是从视顶盖的不同深度以及表面的不同点获得的。诱发反应主要可在视顶盖的对侧检测到，表现为缓慢的正波（脊髓刺激）或负正波（面部刺激），在其之前有一或两个快速的、可能是突触前的偏转，之后是一个非常缓慢的低振幅负波。诱发反应具有顶盖突触后反应的特性，在表面呈躯体定位分布，并在顶盖板层内部呈反向代表。不同输入的投射广泛重叠，但存在最大活动的特定区域。这些发现证明视顶盖具有双重功能：一个初级投射中心和一个整合中心。
