This short video summarizes the various type of fibers that constitutes the white matter of brain. The commissural fibers are specifically discussed in this video. The structure of corpus callosum is widely described. Various other commissural fibers, along with their functions, are also explained in this video, such as habenular commissure and the hippocampal commissure. 0:07 Fibers in white matter of brain 0:14 Projection fibers 0:19 Association fibers 0:23 Commissural fibers 0:34 Corpus callosum 1:12 Anterior commissure 1:28 Posterior commissure 1:43 Habenular commissure 2:00 Hippocampal commissure