SUMMATION AND INHIBITION IN THE FROGS RETINA
SUMMATION AND INHIBITION IN THE FROGS RETINA
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DOI：
10.1113/jphysiol.1953.sp004829
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发表时间：
1953-01-01
影响因子：
5.5
通讯作者：
BARLOW, HB
中科院分区：
文献类型：
--
作者：
BARLOW, HB
用Granit技术从离体青蛙的视网膜中分离出的单元具有具有中心平台的接受野，灵敏度高，直径为0.2-0.6毫米。“关闭”单元将阈下刺激覆盖整个接收野，但不受外界光线的影响。“开-关”单元通过它们的接受域对阈下刺激进行总结，但不如“关”单元完全。落在感受野之外的光有抑制作用。该税。抑制的程度与落在感受野之外的光的强度成正比。可能的功能，与青蛙的视觉行为有关，建议“关闭”和“开-关”单位。
Units isolated by Granit''s technic in the isolated frog''s retina have receptive fields with a central plateau, of high sensitivity 0.2-0.6 mm. in diam. "Off" units summate subliminal stimuli over the whole of their receptive fields, but are unaffected by light falling outside it. "On-off" units summate subliminal stimuli over their receptive fields, but rather less completely than "off" units. Light falling outside the receptive field has an inhibitory action. The amt. of inhibition is proportional to the intensity of the light falling outside the receptive field. Possible functions, related to the visual behavior of the frog, are suggested for "off" and "on-off" units.