猫视网膜神经节细胞在频域中的非线性分析。
Nonlinear analysis of cat retinal ganglion cells in the frequency domain.
作者信息
Victor J D, Shapley R M, Knight B W
出版信息
Proc Natl Acad Sci U S A. 1977 Jul;74(7):3068-72. doi: 10.1073/pnas.74.7.3068.
Abstract
We have analyzed the responses of cat retinal ganglion cells to luminosity gratings that are modulated in time by a sum of sinusoids. A judicious choice of the component temporal frequencies permits a separation of the linear and second-order nonlinear components. Y cell responses show harmonic generation and intermodulation distortion over a wide frequency range. These nonlinear components predominate over the linear components for certain types of spatial stimuli. Nonlinear components in X cells are greatly diminished in comparison. The character of the nonlinear responses provides strong constraints on prospective models for the nonlinear pathway of the Y cell.
摘要
我们分析了猫视网膜神经节细胞对由正弦波总和随时间调制的亮度光栅的反应。对组成时间频率的明智选择允许分离线性和二阶非线性成分。Y细胞反应在很宽的频率范围内表现出谐波产生和互调失真。对于某些类型的空间刺激，这些非线性成分比线性成分占主导。相比之下，X细胞中的非线性成分大大减少。非线性反应的特征对Y细胞非线性通路的前瞻性模型提供了强有力的限制。
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