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¹Sağlık Bilimleri Üniversitesi İzmir Tıp Fakültesi, Beyin ve Sinir Cerrahisi Kliniği, İzmir, Türkiye
²Şişli Kolan International Hastanesi, Beyin ve Sinir Cerrahisi Kliniği, İstanbul, Türkiye The superior longitudinal fasciculus (SLF) is a fiber bundle that surrounds the Sylvian fissure, connecting the frontal, parietal, occipital, and temporal lobes of the cerebral cortex. Upon the removal of the cerebral cortex, short association fibers (U-fibers) become visible. Deeper within these fibers lies the long association fibers. SLF, along with the arcuate fasciculus (AF), constitutes the most superficial association fibers. The SLF is comprised of frontoparietal connecting fibers and can be divided into three segments. SLF I is located in the superior frontal gyrus, connecting the superior part of the precuneus to the anterior part of the superior frontal gyrus and runs in the same direction as the cingulum above it. SLF II is situated in the middle frontal gyrus, connecting the angular gyrus to the middle and inferior frontal gyrus"s middle section, as well as linking the opercular and triangular gyrus regions. SLF III is located in the inferior frontal gyrus and, running inferolaterally to SLF II, connects the supramarginal gyrus to the middle and anterior sections of the inferior frontal gyrus. Dissection of the fibers from lateral to medial reveals SLF II and III. Demonstrating SLF I requires medial hemisphere dissection as the initial step of decortication, the process of removing the cerebral cortex. Subsequently, association fibers (U-fibers) are observed just beneath the cortex. When U-fibers are removed, SLF II fibers, which run in an anterior-posterior axis in the frontoparietal region, become apparent without damage. After the observation of SLF II, dissection towards the frontal operculum reveals SLF III fibers. Anahtar Kelimeler : White matter, SLF, Fiber dissection