highly significantP < 0.0001
fMRI behavioral performances As expected, there was an highly significant main effect of working-memory load for both RT and accuracy (RT: F df(10) = 45.97, P < 0.0001; accuracy: F df(10) = 28.4, P < 0.0001) that depended on lengthened RT and reduced accuracy for progressively higher working-memory loads.