Both phases contain the same neurons (n = 171). Selectivity (SE) indicates how much the neuronal response is influenced by a color, relative to a second color when either is presented alone. Sensory interaction (SI) indicates how much the neuronal response is influenced by either color when both were displayed simultaneously. Slopes close to 0.5 indicate an equal influence of both colors. Slopes <0.5, or >0.5 indicate a weighted influence of a color. The red line indicates the regression fit. Non-informative sample neurons had a fitted slope of 0.38 (R2adj = 0.16, F(1,1366) = 258.08, p < 0.001), significantly smaller than 0.5 (CI = [0.33 0.42]). Delay neurons had a slope of 0.40, also significantly smaller than 0.5 (R2adj = 0.13, F(1,1366) = 197.51, p < .001, CI = [0.35 0.46]). This indicates that for these neurons the reference color influenced firing rate more than the probe color. This smaller slope is not related to the amount of information encoded for the individual colors (which determined the favorite location). It does however indicate that those non-informative neurons were influenced by any color at their favorite location and thereby might have been informative about if the favorite location had a color but not about what color.