title: Orientation selectivity in detection of chromatic gratings.
abstract: Vertical and horizontal equiluminance gratings (red-green and blue-yellow at 1 or 3 cycles per degree) act independently in contrast-threshold measurements. This suggests that detection of such patterns takes place in color-sensitive neural structures with orientational specificity.
authors.forename: R F
authors.initials: RF
authors.lastname: Quick
authors.forename: R N
authors.initials: RN
authors.lastname: Lucas