We regard any cortical areas that process visual signals beyond the mid stage as being the late stage. Whereas the early and mid stages consist of the visual cortex, in which visual signals from the eyes are processed and integrated, visual information beyond the visual cortex is processed in a more cognitive fashion. The late-stage areas include the lateral intraparietal sulcus (LIP) and dorsolateral prefrontal cortex. It has been found that LIP (Shadlen & Newsome 1996) and dorsolateral prefrontal cortex (Heekeren et al. 2004) correlate with visual decision.