MERGING OF MODALITIES IN OPTIC TECTUM - INFRARED AND VISUAL INTEGRATION IN RATTLESNAKES
MERGING OF MODALITIES IN OPTIC TECTUM - INFRARED AND VISUAL INTEGRATION IN RATTLESNAKES
复制标题
DOI：
10.1126/science.628839
复制
发表时间：
1978-01-01
期刊：
影响因子：
56.9
通讯作者：
LOOP, MS
中科院分区：
文献类型：
--
作者：
HARTLINE, PH;KASS, L;LOOP, MS
响尾蛇 [Crotalus viridis]（Crotalinae）的视顶盖包含一层位于视觉层下方的红外敏感神经元；这些间接接收来自面部凹陷器官的输入。他们对 25-70 度范围内温暖物体的出现或运动做出短暂反应。兴奋性感受野（有些有抑制区），可能使蛇能够定向或攻击猎物。红外和视觉空间顶盖图具有相似但不相同的轴；红外放大倍数大于视觉放大倍数。双模态神经元对每种模态都有感受野，反映了 2 个图谱的差异。这一发现表明，在发育过程中，IR 和视觉纤维独立展开以填充可用的顶盖位点，并且双模态神经元形成局部连接，而不考虑在两种模态之间建立空间对应关系。
The optic tectum of pit vipers [Crotalus viridis] (Crotalinae) contains a layer of IR-sensitive neurons subjacent to the visual layer; these indirectly receive input from the facial pit organs. They responded transiently to the appearance or motion of warm objects within their 25-70.degree. excitatory receptive fields (some have inhibitory regions) and presumably allow the snake to orient or strike toward prey. The IR and visual spatiotopic tectal maps had similar, but not identical, axes; the IR magnification was greater than that for vision. Bimodal neurons had receptive fields for each modality that reflected the disparity of the 2 maps. This finding suggested that during development the IR and visual fibers spread out independently to fill available tectal sites and that bimodal neurons form local connections without regard to establishing spatial correspondence between the 2 modalities.