The distinction between dorsal and ventral visual processing streams, first proposed by
Ungerleider and Mishkin (1982) and later refined by Milner and Goodale (1995) has been
elaborated substantially in recent years, spurred by two developments. The first was
proposed in large part by Rizzolatti and Matelli (2003) and is a more detailed description of
the multiple neural circuits connecting the frontal, temporal, and parietal cortices. Secondly,
there are a number of behavioral observations that the classic “two visual systems” …