1 Department of Psychology, University of California, San Diego, USA.
2 Japan Society for the Promotion of Science, Tokyo, Japan; Research Institute of Electrical Communication, Tohoku University, Sendai, Japan; Department of Psychology, University of California, San Diego, USA.
3 Department of Psychological and Brain Sciences, Dartmouth College, Hanover, NH, USA; Laboratoire Psychologie de la Perception, Université Paris Descartes, France.
An orbiting ray pattern produces an unexpected gray disk. Here we demonstrate this visual effect and its possible insights into visual temporal integration.