Figure 5.

Sketch of the processing in the preparation-perception- action cycle and associated brain areas as a function of time (not scaled). Obviously the same brain areas were involved in both speed- (orange) and accuracy (blue)- processing; however, the activity of some areas was more affected by either one or the other condition: the orange and blue lines depict the two main flows within speed and accuracy systems. SMA = supplementary motor area, rPFC = right prefrontal cortex, PPC = posterior parietal cortex.