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Nature 217, 28-31 (6 January 1968) | doi:10.1038/217028a0; Received 5 December 1967

Discrete Potentials in the Dark-adapted Eye of the Crab Limulus

JOHN E. DOWLING

  1. Wilmer Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, and Marine Biological Laboratory, Woods Hole, Massachusetts
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Two types of discrete depolarizing potentials are recorded intracellularly from thoroughly dark-adapted visual cells of small Limuli stimulated with dim light. The larger type of discrete potential seems Co be associated with the generation of nerve impulses in the eye in these conditions.