ABSTRACT
Study of gestural organization within the central nervous system has benefited considerably from at least two sets of knowledge in the last 2 decades. The first one is the now accepted distinction between two visual systems: one devoted to spatial vision, and the other to identification of objects (Held, 1968; Schneider, 1969; Trevarthen, 1968). The second concerns, on the one hand, results obtained in the current quest for central nervous pathways involved in each of these visual systems and, on the other hand, the current progress in the related physiology of motor control (Mishkin, Ungerleider, & Macko, 1983).
