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In Gestalt psychology, isomorphism refers to a correspondence between a stimulus array and the brain state created by that stimulus.[1] For example, in the phi phenomenon in which a pair of alternating and spatially separated patches of light create the illusion of motion, it is argued that the brain state created by this stimulus matches the brain state created by a patch of light moving between the two locations.


  1. Kohler, W. (1920/1955). Die physischen Gestalten in Ruhe und im stationaren Zustand. Abridged trans. in W.D. Ellis (Ed.), A source book of gestalt psychology. (pp. 71-88). New York: The Humanities Press. (Original work published in 1920).

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