Gaillard F
J Physiol (Paris). 1984;79(3):139-44.
Small field (less than 10 degrees) monocular neurons were electrophysiologically recorded from the rostral part of the frog's optic tectum. When tested with conventional stimuli, these neurons displayed rather common properties. Two main groups could nevertheless be defined. In group I neurons (30%), habituation to repetitive stimulations was present but the responses never disappeared completely. These neurons also showed brief OFF-ON responses to light spot stimulations. Group II neurons (70%) only responded to the first presentations of moving targets. Responses to light spot stimulation were different: 25% of them (group IIa) showed OFF-ON responses, 19% (group IIb) presented only OFF responses and 26% (group IIc) gave no response. The receptive fields had no null region and extended about equally in all directions. There was no correlation between RF diameters and response types. Small field visual neurons represented approximately 37.7% of the whole neuronal population. The problem of their place in the usually used classification is discussed.
从小青蛙视顶盖前部电生理记录到小视野（小于10度）单眼神经元。当用传统刺激进行测试时，这些神经元表现出相当常见的特性。然而，可以定义两个主要组。在第一组神经元（30%）中，存在对重复刺激的习惯化，但反应从未完全消失。这些神经元对光斑刺激也表现出短暂的开-关反应。第二组神经元（70%）仅对移动目标的首次呈现做出反应。对光斑刺激的反应不同：其中25%（IIa组）表现出开-关反应，19%（IIb组）仅表现出关反应，26%（IIc组）无反应。感受野没有盲区，在各个方向上的扩展大致相同。感受野直径与反应类型之间没有相关性。小视野视觉神经元约占整个神经元群体的37.7%。讨论了它们在常用分类中的位置问题。
