The behavioral results in fMRI study.

The data are shown in Mean±SD. Numbers of subjects are shown in brackets. ON.RT, the average reaction time in ongoing condition; ONp.RT, the average reaction time of ongoing trials in PM condition; PM.RT the reaction time of PM trials in PM condition; PMall.RT, the overall reaction time in PM condition. PMI.RT, the PM interference score, calculate by Onp.RT-ON.RT; ON.ACC, the average accuracy in ongoing condition; ONp.ACC, the average accuracy of ongoing trials in PM condition; PM.ACC, the accuracy of PM trials in PM condition. *, Group difference is significant when compared to healthy young adults, p<0.05; #, Group difference is significant when compared to healthy older adults, p<0.05.