Fast and Slow Videos of the Attention and Perception Test (video) University of Tokyo Share Print E-Mail Loading video... Caption In a recent visual perception study by University of Tokyo researchers, volunteers would push a button and then at some unpredictable length of time afterwards (between 50 and 800 milliseconds) two images would briefly flash onscreen. Volunteers then had to report the color (black or white) and orientation (left or right diagonal lines) of the two images they had seen. This video shows a slowed-down version of the test and the almost actual speed of the test. Volunteers performed up to 2,000 individual trials of the test. Credit Images by Ryohei Nakayama Usage Restrictions CC-BY Images by Ryohei Nakayama Share Print E-Mail 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.