A Nonlinearity in the Inhibitory Interactions in the Lateral Eye of Limulus

Barlow , Robert B.; Lange , G. David

doi:10.1085/jgp.63.5.579

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Article| May 01 1974

A Nonlinearity in the Inhibitory Interactions in the Lateral Eye of Limulus

Robert B. Barlow, Jr.,

Robert B. Barlow, Jr.

From the Institute for Sensory Research, Syracuse University, Syracuse, New York 13210 and the Department of Neurosciences, University of California at San Diego, La Jolla, California 92037

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G. David Lange

From the Institute for Sensory Research, Syracuse University, Syracuse, New York 13210 and the Department of Neurosciences, University of California at San Diego, La Jolla, California 92037

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Author and Article Information

Robert B. Barlow, Jr.

From the Institute for Sensory Research, Syracuse University, Syracuse, New York 13210 and the Department of Neurosciences, University of California at San Diego, La Jolla, California 92037

G. David Lange

From the Institute for Sensory Research, Syracuse University, Syracuse, New York 13210 and the Department of Neurosciences, University of California at San Diego, La Jolla, California 92037

Received: September 19 1973

Online ISSN: 1540-7748

Print ISSN: 0022-1295

1974

J Gen Physiol (1974) 63 (5): 579–589.

https://doi.org/10.1085/jgp.63.5.579

Receptor units in the eye of the horseshoe crab are more sensitive to lateral inhibition at some levels of excitation than they are at others. As a result, the steady-state inhibition of the response of a given unit is not directly proportional to the response levels of neighboring units. This effect may be represented by the introduction of a nonlinearity in the Hartline-Ratliff system of equations. The nonlinear inhibitory effect appears to increase the operating range of the receptor units.

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