Gunnar Svaetichin (1915-1981) mastered high impedance microelectrode techniques while studying neurophysiology in the Karolinska Institute with Ragnar Granit (nobel prize, 1967)

Gunnar Svaetichin (1915-1981) mastered high impedance microelectrode techniques while studying neurophysiology in the Karolinska Institute with Ragnar Granit (nobel prize, 1967). These enabled intracellular recording of light responses from retinal interneurons, a field that he founded. It was an imaginative area to pursue in the 1940’s. He is the discoverer of S-potentials, now known to be retinal horizontal cell responses, and discovered both color opponent and non opponent types. The discovery of neural color opponency ranks with the most significant findings in color vision in the 20th century (292). The later decades of his career were spent at the Venezuelan Institute for Scientific Research.

From: S-Potentials and Horizontal Cells

Cover of Webvision
Webvision: The Organization of the Retina and Visual System [Internet].
Kolb H, Fernandez E, Nelson R, editors.
Salt Lake City (UT): University of Utah Health Sciences Center; 1995-.

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