Figure 4.

Schematic and photomicrographs illustrating the complexity of the uncinate fasciculus. a, Schematic illustrating vPFC axons crossing through the UF to reach other fiber tracts. Note that the medial and central parts of the UF have more crossing fibers compared with the lateral part of the tract. b–c, Axons from a cOFC injection site (*) enter the UF (b), travel a few millimeters and split into different bundles (c). Note the crossing of many fibers as the axons enter the UF in b (arrows). b., Bundle; CB, cingulum bundle; CC, corpus callosum; EC, external capsule; EmC, extreme capsule; IC, internal capsule; los, lateral orbital sulcus; mos, medial orbital sulcus; UF, uncinate fasciculus.