====== WHITE MATTER OF CEREBRUM  ======


  * White matter of cerebrum 
    * types of fibers in the white matter
      * association fibers ( intra hemispheric fibres)
        * features 
          * interconnect different regions of same cerebral hemisphere 
        * types 
          * short association fibers ( arcuate or U fibers ) 
          * long association fibers 
            * connect gyri of different lobes 
            * types 
              * uncinate fasciculus 
                * connects motor speech area and orbital cortex of frontal lobe 
                  * to cortex of temporal lobe 
              * cingulum or limbic association bundle 
                * thick fibers occupying cingulate and parahippocampal gyri 
                * extends from parater-minal gyrus to uncus 
                  * forming almost a circle like a girdle
              * superior longitudinal bundle 
                * longest association bundle 
                * connects frontal lobe to 
                  * occipital and temporal lobes  
              * inferior longitudinal bundle 
                * connects visual association area to 
                  * temporal lobe
              * fronto-occipital bundle 
                * commences in frontal pole 
                  * runs backwards to radiate in occipital and temporal lobes 
      * commissural fibers ( interhemispheric fibres )
        * [[:en:corpus_callosum|Corpus callosum ]]
        * Anterior commissure 
        * Posterior commissure 
        * Hippocampal commissure 
        * Habenular Commissure 
      * projection fibers
        * connect cerebral cortex to subcortical centres 
        * types 
          * corticofugal fibers 
            * go away from cortex ( cortical efferents )  
          * corticopetal fibers
            * come to cerebral cortex from other centres 
            * types 
              * present in neocortex  
                * [[:en:corona_radiata | corona radiata  ]]
                * [[:en:internal_capsule|Internal capsule]] 
              * present in allocortex 
                * fimbria 
                * [[:en:fornix | fornix  ]]