![]() ![]() In this vein, we examined whether there are direction maps in V2. Evidence of functional organization for objects or faces in monkey anterior inferotemporal cortex enhances the concept that it is an area important for object vision (e.g. The presence of a hue map in V2 thin stripes reinforces the idea that thin stripes are important for processing of color information ( Xiao et al 2003, Lim et al 2009). ![]() ![]() For example, MT, an area central to motion processing, contains a well described a functional organization for direction selectivity ( Albright et al 1984, Malonek et al 1994, DeAngelis and Newsome 1999). In our view, the presence of a functional organization for a particular parameter points to features that are central to a cortical area’s defining role. We approached this by investigating possible functional organization for direction selectivity in V2. However, given the well-described anatomical projection from V2 thick stripes to MT ( Shipp and Zeki 1985 DeYoe and Van Essen 1985) and the reportedly higher proportion of directional neurons in the thick stripes (28%) than in the thin (7%) and pale (19%) stripes ( Hubel and Livingstone, 1987 Levitt et al., 1994 Shipp and Zeki., 2002 although see, Peterhans and von der Heydt 1993, Gegenfurtner et al 1996), it is apparent that the role of V2 thick stripes in motion processing deserved further investigation. This is not surprising given the little available data on motion response in V2 and the reports that indicate little directional response in Macaque monkey V2 (e.g. Traditionally, Area V2 has not been considered a central player in studies of motion processing and direction selectivity. ![]()
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