| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6203782 | Vision Research | 2011 | 7 Pages |
Achromatic second-order (contrast) Mach bands can be perceived near the contrast ramp between two contrast levels. In this study we show that a repertoire of chromatic second-order Mach bands is also clearly perceived, under equal-luminance conditions (minimum motion technique). The results show that chromatic and achromatic second-order stimuli yield significant perceived second-order Mach bands, with approximately the same relative magnitude. At high spatial frequencies the effect is more prominent for achromatic second-order Mach bands stimuli than for chromatic second-order stimuli. The effect of the chromatic second-order Mach bands is smaller for complementary pairs of colors than for non-complementary pairs of colors. We suggest that the effect of second-order Mach bands is an expression of the mechanism of second-order induction.
⺠A large repertoire of perceived chromatic second-order Mach bands has been found. ⺠The chromatic and achromatic second-order stimuli yield the same effect magnitude. ⺠The high spatial frequencies yield more prominent effect than achromatic stimuli. ⺠The effect is smaller for complementary pairs of colors than for non-complementary. ⺠The effect might be an expression of the contrast-contrast induction mechanism.
