Visual threshold is set by linear and nonlinear mechanisms in the retina that mitigate noise: how neural circuits in the retina improve the signal-to-noise ratio of the single-photon response.
Visual threshold is set by linear and nonlinear mechanisms in the retina that mitigate noise: how neural circuits in the retina improve the signal-to-noise ratio of the single-photon response.
复制标题
DOI：
10.1002/bies.201100014
复制
发表时间：
2011-06
期刊：
影响因子：
4
通讯作者：
Sampath, Alapakkam P.
中科院分区：
文献类型：
--
作者：
Pahlberg, Johan;Sampath, Alapakkam P.
在感觉生物学中，一个主要的悬而未决的问题是感觉受体细胞如何在最大化信号的同时最小化噪声以设置检测阈值。这种优化可能是有问题的，因为大多数感觉系统中的信号和限制噪声的起源被认为是刺激转导。受体细胞中的信号处理可以提高信噪比。然而，神经电路可以通过汇集来自感觉受体细胞的信号并使用线性和非线性滤波机制的组合来处理它们来进一步优化检测阈值。在视觉系统中，噪声限制光检测已被假定为来自视杆细胞中的刺激转导。在这种情况下，视网膜中信噪比的进化优化已被证明在允许视觉灵敏度接近由光的量子性质设定的极限方面至关重要。在这里，我们将讨论如何减轻哺乳动物视网膜中的噪音，以实现高度敏感的夜视。
In sensory biology, a major outstanding question is how sensory receptor cells minimize noise while maximizing signal to set the detection threshold. This optimization could be problematic because the origin of both the signals and the limiting noise in most sensory systems is believed to lie in stimulus transduction. Signal processing in receptor cells can improve the signal-to-noise ratio. However, neural circuits can further optimize detection threshold by pooling signals from sensory receptor cells and processing them using a combination of linear and nonlinear filtering mechanisms. In the visual system, the noise limiting light detection has been assumed to arise from stimulus transduction in rod photoreceptors. In this context the evolutionary optimization of the signal-to-noise ratio in the retina has proven critical in allowing visual sensitivity to approach the limits set by the quantal nature of light. Here we discuss how noise in the mammalian retina is mitigated to allow for highly sensitive night vision.
登录
查看更多内容
影响因子：
5.3
作者：
Dhingra, NK;Smith, RG
通讯作者：
Smith, RG
影响因子：
16.2
作者：
Deans, MR;Volgyi, B;Paul, DL
通讯作者：
Paul, DL
影响因子：
3.4
作者：
BIALEK, W;OWEN, WG
通讯作者：
OWEN, WG
影响因子：
64.8
作者：
AHO, AC;DONNER, K;REUTER, T
通讯作者：
REUTER, T
影响因子：
16.2
作者：
Field, GD;Rieke, F
通讯作者：
Rieke, F