December 1971
Volume 10, Issue 12
Articles  |   December 1971
The Retinal Response to Sinusoidal Variations in Light Intensity at Very Low Frequency
Author Affiliations
    Department of Biomedical Engineering, Rush-Presbyterian-St. Luke's Medical Center, and Bioengineering Program, University of Illinois at Chicago Circle, Chicago, Ill.
Investigative Ophthalmology & Visual Science December 1971, Vol.10, 971-978. doi:
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      J. LEVETT; The Retinal Response to Sinusoidal Variations in Light Intensity at Very Low Frequency. Invest. Ophthalmol. Vis. Sci. 1971;10(12):971-978.

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      © ARVO (1962-2015); The Authors (2016-present)

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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.


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