Fig. 2.

Median RT results for Target Discrimination Task. A. Average of Median RTs for unrewarded and rewarded trials at for equal probability blocks. Reaction times in both groups were shorter to rewarded than to non-rewarded targets. B. Average of Median RTs for unrewarded and rewarded trials for low probability and high probability trials respectively. Reaction times in both groups were shorter to rewarded than to non-rewarded targets for both probabilities, and an increase in the strength of the probability resulted in shorter RTs. The arrows indicate the trial types for which the two factors, spatial probability and reward were in conflict.