Commissural and Associative Pathways

Transverse or commissural fibers unite the two hemispheres association fibers connect different structures in the same hemisphere. Most commissural and associative pathways are well visible on cross-sectional MRI cuts. In this chapter, the main pathways are drawn on 3D MRI reformatted images. MR tractography can nowadays directly identify many of them. Corpus Callosum (see also p. 24) The corpus callosum is the biggest interhemispheric commissure, containing fibers that reach all aspects of the...