“I used to build up to sensation,” the British painter Bridget Riley has explained, “accumulating tension until it released a perceptual experience.” Riley creates energy with stripes, circles, triangles, and rhomboids, geometries that move like murmurations—form and color freed from the figurative. She describes the result as uninhibited “pure sight.” In this display—her largest survey in the United States in the last 20 years—Riley herself has selected the works on view. On the ground floor, her monochrome paintings from the 1960s greet museum-goers. Upstairs, her passion for color is unleashed. Recognizable works will be juxtaposed with lesser known pieces. —Elena Clavarino