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. 1977 Jul;74(7):3068-72.
doi: 10.1073/pnas.74.7.3068.

Nonlinear analysis of cat retinal ganglion cells in the frequency domain

J D Victor, R M Shapley, B W Knight

Nonlinear analysis of cat retinal ganglion cells in the frequency domain

J D Victor et al. Proc Natl Acad Sci U S A. 1977 Jul.

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.

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