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Abstract
The frog retinal response to light is obtained in the frequency domain. The response is obtained by means of a capillary-type electrode at the cornea. Sinusoidal stimuli are used. The very low frequency range (0.01 to 1 Hz.) is examined. With decreasing frequency, retinal gain increases and the response is more nearly sinusoidal. The increase in sensitivity is thought to result from rod enhancement. The linear-nonlinear-linear transition occurring over the entire bandwidth of the frog retinal system is explained in terms of a two-component model.