Figure 3From: Colour vision in ADHD: Part 1 - Testing the retinal dopaminergic hypothesisColor stimuli. Color stimuli varied in saturation level (a) and were subtended 2â—‹ of visual angle to either left or right side (b). Luminance was kept equal for both red and blue stimuli and background. Color stimuli were modulated by a clipped Gaussian envelope to blend the edges with the background and minimize border effects.Back to article page