The title of this piece is Though the Flower and it certainly makes you feel the movement with the illusion though it's slightly curved lines in the petals. The white highlights used on the edge of the petals, closest to the center, make it look like light is reflecting off of a glowing middle. To make such gradient coloration the Artist, Judy Chicago, sprayed this design in acrylic paint on canvas. The three colors red, blue, and white are distributed throughout the picture in a radial symmetrical pattern, making it a very design unified.

Source: Are You Experienced?: How Psychedelic Consciousness Transformed Modern Art, Pg #179
By: Ken Johnson