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Light Adaptation in Retinal Rods of the Newt

  • S. Forti
  • A. Menini
  • G. Rispoli
  • L. Spadavecchia
  • V. Torre
Part of the NATO ASI Series book series (NSSA, volume 194)

Abstract

It is known that guanosine 3’5’-cyclic monophosphate (cyclic GMP) is the internal transmitter of phototransduction (Caretta and Cavaggioni, 1983; Fesenko et al., 1985; Yau and Nakatani, 1985b; Haynes et al., 1986; Zimmermann and Baylor, 1986) and that Ca2+ is not a positive transmitter (Matthews et al., 1985; Lamb et al., 1986) as originally proposed (Hagins, 1972). Moreover, it is known that the light-sensitive channels present in the plasma membrane outer segments of rod are activated by cyclic GMP in a cooperative way (Fesenko et al., 1985; Haynes et al., 1986; Zimmermann and Baylor, 1986).

Keywords

Outer Segment Light Adaptation Slow Stage Tiger Salamander Internal Transmitter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • S. Forti
    • 1
    • 2
  • A. Menini
    • 1
    • 3
  • G. Rispoli
    • 1
  • L. Spadavecchia
    • 1
    • 3
  • V. Torre
    • 1
  1. 1.Dipartimento di FisicaUniversita’ di GenovaItaly
  2. 2.IRSTPovo, TrentoItaly
  3. 3.Istituto di Cibernetica e BiofisicaC.N.R.GenovaItaly

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