Vision for action is not veridical

We agree with Schenk and McIntosh that the human brain can better be described in terms of task-specific functional networks than in terms of a division between (dorsal) egocentric vision for action and (ventral) viewpoint-independent vision for perception. However, by concentrating on the lack of experimental support for the latter division, the authors neglect an important reason for postulating that there is a separate vision-for-action system: needing veridical metric information to guide one's actions. We argue that considering this reason would support the authors' conclusion because the visual information that guides our actions does not have to be veridical. © 2009 Psychology Press.