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Science 10 October 1969:
Vol. 166. no. 3902, pp. 240 - 243
DOI: 10.1126/science.166.3902.240
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Articles

Current-Voltage Relations during Illumination: Photoreceptor Membrane of a Barnacle

H. Mack Brown 1, Robert W. Meech 1, Hiroyuki Koike 1, and Susumu Hagiwara 1

1 Marine Neurobiology Facility and Division of Marine Biology, Scripps Institution of Oceanography, University of California at San Diego, La Jolla 92037

In voltage clamped photoreceptor cells of the barnacle, light-induced membrane current varied nonlinearly with membrane potential and changed sign at about + 27 millivolts (reversal potential) independently of light intensity. Instantaneous current-voltage relations were linear and intersected the voltage axis at the reversal potential. Illumination increased membrane conductance that was dependent on membrane potential, light intensity, and time.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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Science. ISSN 0036-8075 (print), 1095-9203 (online)