Reshaping the binding problem of form and motion vision

摘要

The primary visual cortex (or VI) is the first cortical processing stage in primates and receives visual information from the retina via several parallel pathways. Cortical regions beyond VI are segregated into two major streams: dorsal and ventral. The dorsal route takes information from VI to the posterior parietal cortex, while the ventral pathway takes a route from VI to the inferotemporal cortex. The ventral visual stream is tuned for object identification, while the dorsal stream is tuned to detect where objects are located and in which direction they move (Ungerleider & Mishkin, 1982; Ungerleider &Pasternak, 2003). The apparent functional separation between the two paths has created a theoretical challenge. How can the information in the two systems be brought together across cortical space: the visual binding problem (Roskies, 1999)