Skip to main content
. Author manuscript; available in PMC: 2008 Jun 5.
Published in final edited form as: Curr Biol. 2007 Jun 5;17(11):989–993. doi: 10.1016/j.cub.2007.05.005

Figure 1. Stimuli used in the behavioral and fMRI experiments.

Figure 1

Behavioral and fMRI responses to the lightness effect caused by the “Illusory” Craik-O'Brien (CO) stimulus were measure and compared with responses to the “Real” condition in which flanks physically differed. The response to the “Illusory” stimulus was also compared with that to the “Control” stimulus that caused a weak lightness effect. Luminance profile along a horizontal cross-section is shown below each stimulus.