Reductionism in ART and Brain Science, by Eric Kandel, page 143, Zettel 132

Modern abstract art was predicated on two major advances: the liberation of form and the liberation of color. The Cubists, led by Georges Braque and Pablo Picasso, liberated form. Since then, modern art has often represented the artist’s subjective vision and state of mind rather than a naturalistic illusion of form based on the outside world. In the modern era it was largely Henri Matisse who liberated color, freeing it from form and thereby demonstrating that colors and color combinations can exert unexpectedly profound emotional effects. Once color was no longer determined by form, a color that might have seemed “wrong” in a particular figurative context would actually be right, because it was used to convey the artist’s inner vision, not to represent a particular object. Moreover, the separation of color from form is consistent with what we know about the anatomy and physiology of the prime visual system: That is form, color, movement, and depth are analyzed separately in the cerebral cortex. - Reductionism in ART and Brain Science, by Eric Kandel, page 143, Zettel 132