(IMAGE) Tohoku University Caption Hue selectivity results: (left) example hue selective voxels, indicated by most selective color in each voxel. (right) Average histogram of hue selective voxels in primary visual cortex (V1: one of the four areas measured in this study) as polar histogram in relative population (%). Four dotted lines indicate unique hues (pure red, blue, green and yellow). Credit Research Institute of Electrical Communication, Tohoku University Usage Restrictions None 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.