Artists, like neuroscientists, are masters of visual systems. Through experimentation and observation, artists have developed innovative methods for fooling the eye, enabling flat canvases to appear three-dimensional, for instance. Neuroscience—and more recently the subfield of neuroaesthetics—can help to explain the biology behind these visual tricks, many of which were first discovered by artists. “I often go to art to figure out questions to ask about science,” says Margaret Livingstone, Takeda Professor of Neurobiology at Harvard Medical School. “Artists may not study the neuroscience per se, but they’re experimentalists.”

During the 1960s, Op Art—short for “Optical art”—combined the two disciplines by challenging the role of illusion in art. While earlier painters had created the illusion of depth where there was none, Op artists developed visual effects that called attention to the distortions at play. Abstract and geometric, their works relied upon the mechanics of the spectator’s eye to warp their compositions into shimmering and shifting displays of line and color. The Museum of Modern Art announced this international artistic trend in 1965 in a seminal exhibition titled “The Responsive Eye.” Since then, neuroscientists have continued to probe the mechanisms by which the human eye responds to these mind-bending works.

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