Training for Conscious Perception (IMAGE) Max-Planck-Gesellschaft Caption A. Subjects are presented with geometric forms in rapid succession. After 10 milliseconds the forms were masked to render them invisible. The task of the subjects was to judge their visibility. B. Location of form and mask on the screen. C. A square and a diamond serve as the visual cues, a star as a mask. Credit PNAS Early Edition, doi: 10.1073/pnas.1009147108 Usage Restrictions This image may only be used or reproduced for editorial purposes and in connection with scientific articles on our press material, in which case such usage or reproduction is free of charge and requires no permission. Any other use, in particular for commercial purposes, requires prior permission of the author or photographer. Further enquires can be answered in the Press and Public Relations Office - simply write an e-mail to gebhard@gv.mpg.de. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.