See Also: Granit, Ragnar Arthur(encyclopedia)
Frisch, Ragnar (Anton Kittil)(encyclopedia)
Granit(medicine)
Granit's loop(medicine)
Strawberry-Banana Granité(recipes)
Dox, Arthur(medicine)
Arthur(dictionary)
Morte d'Arthur, Le(dictionary)
Honegger, Arthur(encyclopedia)
Harden, Sir Arthur(encyclopedia)

Granit, Ragnar Arthur (sh)




born Oct. 30, 1900, Helsinki, Fin.
died March 12, 1991, Stockholm, Swed.

Finnish-born Swedish physiologist.

His "dominator-modulator" theory states that in addition to the retina's three kinds of cone cells, which respond to different colours, certain optic-nerve fibres (dominators) respond either to the whole spectrum or to specific colours (modulators). He also proved that light inhibits as well as stimulates optic-nerve impulses; other research helped determine the nerve pathways and processes by which receptors in muscles coordinate muscle action. He shared a 1967 Nobel Prize with George Wald and Haldan Keffer Hartline.