Origin of dentate projections to areas 9 and 46. Sections through the middle of the dentate nucleus are shown after injections into area 9m (left), area 9l (middle), or area 46 (right). The rostrocaudal distribution of labeled neurons in the dentate for each case is shown at the bottom of the figure, with the locations of the sections shown above indicated by thearrows.DN, Dentate nucleus;R, rostral; C, caudal.