Spatial summation of inhibitory influences in the eye of Limulus, and the mutual interaction of receptor units.
Spatial summation of inhibitory influences in the eye of Limulus, and the mutual interaction of receptor units.
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DOI：
10.1085/jgp.41.5.1049
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发表时间：
1958-05-20
期刊：
影响因子：
--
通讯作者：
RATLIFF F
中科院分区：
文献类型：
--
作者：
HARTLINE HK;RATLIFF F
侧眼受体单位（小眼）之间的抑制作用是相互叠加的。如果两组受体一起被照射，它们对附近的“测试受体”的总抑制作用（其神经冲动放电频率响应于光的减少）取决于两组受体施加的综合抑制影响。如果两组在眼睛中相距很远，它们对测试受体的总抑制作用等于它们各自产生的抑制作用的总和。如果它们靠得足够近，可以相互作用，它们共同作用时的效果通常小于它们各自作用的总和，因为每一组都抑制另一组的活动，从而减少其抑制作用。然而，测试受体，或被它照亮的一小群，可能与这两组相互作用并影响净抑制作用。对于这三组受体的不同构型，已经观察到各种定量效应。n个相互作用元素的活性由一组n个联立方程描述，这些方程与所涉及的受体元素的频率呈线性关系。应用到三个相互作用的受体或受体群方程推导，定量地解释了在使用的视网膜照明的各种实验配置中观察到的各种效应。
The inhibitory influences exerted mutually among the receptor units (ommatidia) of the lateral eye of Limulus are additive. If two groups of receptors are illuminated together the total inhibition they exert on a "test receptor" near them (decrease in the frequency of its nerve impulse discharge in response to light) depends on the combined inhibitory influences exerted by the two groups. If the two groups are widely separated in the eye, their total inhibitory effect on the test receptor equals the sum of the inhibitory effects they each produce separately. If they are close enough together to interact, their effect when acting together is usually less than the sum of their separate effects, since each group inhibits the activity of the other and hence reduces its inhibitory influence. However, the test receptor, or a small group illuminated with it, may interact with the two groups and affect the net inhibitory action. A variety of quantitative effects have been observed for different configurations of three such groups of receptors. The activity of a population of n interacting elements is described by a set of n simultaneous equations, linear in the frequencies of the receptor elements involved. Applied to three interacting receptors or receptor groups equations are derived that account quantitatively for the variety of effects observed in the various experimental configurations of retinal illumination used.
DOI：
10.1085/jgp.39.5.651
发表时间：
1956-05-20
期刊：
The Journal of general physiology
影响因子：
--
作者：
HARTLINE HK;WAGNER HG;RATLIFF F
通讯作者：
RATLIFF F
DOI：
10.1085/jgp.40.3.357
发表时间：
1957-01-20
期刊：
The Journal of general physiology
影响因子：
--
作者：
HARTLINE HK;RATLIFF F
通讯作者：
RATLIFF F