Single-channel Currents Activated by Light in Limulus Ventral Photoreceptors

Overview

Journal Nature

Specialty Science

Date 1983 Jul 21

PMID 6306479

Citations 28

Authors

J BACIGALUPO

J E Lisman

Affiliations

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Abstract

Sensory stimuli alter the membrane conductance of receptor cells. Noise analysis studies in several types of receptors suggest that ionic channels mediate this change in conductance, but no direct evidence for such channels has been obtained. We have now investigated the mechanism of ion permeation underlying the light-induced conductance in the ventral photo-receptors of Limulus polyphemus by means of the patch-clamp technique and have resolved single-channel currents that are activated by light.

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