Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Site Tools

  • AAAS
  • Subscribe
  • Feedback

Site Search

Search Advanced

Science 31 March 1972:
Vol. 175. no. 4029, pp. 1486 - 1488
DOI: 10.1126/science.175.4029.1486
Prev | Table of Contents | Next

Articles

A Visual Pigment with Two Physiologically Active Stable States

Peter Hillman 1, Shaul Hochstein 1, and Baruch Minke 1

1 Institute of Life Sciences, Hebrew University of Jerusalem, Jerusalem, Israel

Red illumination of a Balanus amphitrite photoreceptor that has been adapted to blue light leads to prolonged depolarization in the late receptor potential. This depolarization can be switched off by further exposure to a blue stimulus. The early receptor potential in this cell is purely depolarizing or largely hyperpolarizing; the former is true if the cell has been adapted to red light, and the latter, if blue light has been used. The color-adaptation "memories" for both early and late receptor potentials appear to be permanent. The existence of two stable states for the early receptor potential directly implies a pigment with two stable states, and these apparently contribute antagonistically to the late receptor potential.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Invertebrate Color Vision and the Tuned-Receptor Paradigm.
G. S. Wasserman (1973)
Science 180, 268-275
   PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)