WHAT THE FROGS EYE TELLS THE FROGS BRAIN
WHAT THE FROGS EYE TELLS THE FROGS BRAIN
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DOI：
10.1109/jrproc.1959.287207
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发表时间：
1959-01-01
影响因子：
--
通讯作者：
PITTS, WH
中科院分区：
文献类型：
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作者：
LETTVIN, JY;MATURANA, HR;PITTS, WH
本文对青蛙视神经中单个纤维的活动进行了分析。我们的方法是找出哪一种刺激在一根神经纤维中引起最大的活动，然后找出刺激中令人兴奋的部分，这样其他因素的变化对反应的影响就很小了。在过去的20年里，人们已经知道，每个纤维不是连接到视网膜上的几个视杆细胞和视锥细胞，而是连接到一个相当大的区域内的许多视杆细胞和视锥细胞。我们的结果表明，在该区域的大部分地区，不是光强本身，而是局部强度变化的模式是令人兴奋的因素。纤维有四种类型，每种类型都有不同的图案。每种类型都均匀分布在青蛙的整个视网膜上。因此，有四个不同的平行分布通道，青蛙的眼睛通过这些通道以独立于平均光照的局部模式向大脑传达视觉图像。我们描述了这些模式，并显示了通道的功能和解剖分离。这项工作是在青蛙身上做的，我们的解释只适用于青蛙。
In this paper, we analyze the activity of single fibers in the optic nerve of a frog. Our method is to find what sort of stimulus causes the largest activity in one nerve fiber and then what is the exciting aspect of that stimulus such that variations in everything else cause little change in the response. It has been known for the past 20 years that each fiber is connected not to a few rods and cones in the retina but to very many over a fair area. Our results show that for the most part within that area, it is not the light intensity itself but rather the pattern of local variation of intensity that is the exciting factor. There are four types of fibers, each type concerned with a different sort of pattern. Each type is uniformly distributed over the whole retina of the frog. Thus, there are four distinct parallel distributed channels whereby the frog''s eye informs his brain about the visual image in terms of local pattern independent of average illumination. We describe the patterns and show the functional and anatomical separation of the channels. This work has been done on the frog, and our interpretation applies only to the frog.