From: Metacontrast masking within and between visual channels: Effects of orientation and spatial frequency contrasts Journal of Vision. 2010;10(6):12. doi:10.1167/10.6.12 Figure Legend: Individual masking data of three subjects. The target spatial frequency was always 8 cpd; the mask spatial frequency was always 1 cpd. Three orientation contrasts were used: 0° (green lines and symbols), 45° (gray lines and symbols), and 90° (red lines and symbols). Date of download: 11/6/2017 The Association for Research in Vision and Ophthalmology Copyright © 2017. All rights reserved.