Effect of chromatic uncertainty on detectability of a visual stimulus.
The detectability of a brief color shift towards red or towards green of a foveally viewed yellow target is less by 25% if the observer is uncertain as to the direction of the color shift. This result matches a prediction of the theory of signal detectability: When signal parameters become uncertain, detectability declines.
D003118:Color Perception; D006801:Humans; D014792:Visual Acuity