page_title: Inferior longitudinal fasciculus
hierarchical_section_title: Inferior longitudinal fasciculus
caption_attribution_description: Inferior longitudinal fasciculus. Association fiber running along the lateral walls of the inferior and posterior cornua of the lateral ventricle in brain.
context_page_description: The inferior longitudinal fasciculus is traditionally considered one of the major occipitotemporal association tracts. It is the white matter backbone of the ventral visual stream. It connects the ventral surface of the anterior temporal lobe and the extrastriate cortex of the occipital lobe, running along the lateral and inferior wall of the lateral ventricle.
  The existence of this fasciculus and its anatomical description have been the subject of several mutually conflicting studies. Some authors denied its existence because of the unclear results obtained in non-human brains.
  Using diffusion tensor imaging, several authors have confirmed the presence of this constant longitudinal pathway in humans.
  Some other studies of the ILF based on Klingler's dissection method
context_section_description: The inferior longitudinal fasciculus is traditionally considered one of the major occipitotemporal association tracts. It is the white matter backbone of the ventral visual stream. It connects the ventral surface of the anterior temporal lobe and the extrastriate cortex of the occipital lobe, running along the lateral and inferior wall of the lateral ventricle.
  The existence of this fasciculus and its anatomical description have been the subject of several mutually conflicting studies. Some authors denied its existence because of the unclear results obtained in non-human brains.
  Using diffusion tensor imaging (DTI), several authors have confirmed the presence of this constant longitudinal pathway in humans.
  Some other studies of the ILF based on Klingler's dissection method (a type of white matter blunt dissection, providing reliable data on the anatomy of major fibre bundles and, in some cases, additional tractography not only confirmed the classical descriptions of the direct connection between occipital and temporal regions but also sought to detail the subcomponents of this association tract.
  Four branches were consistently identified: a fusiform branch connecting the fusiform gyrus to the anterior temporal regions; a dorsolateral occipital branch connecting the superior, middle and inferior occipital gyri to the anterior temporal regions; a lingual branch connecting the lingual gyrus to the anterior part of the middle temporal gyrus; and a minor cuneal branch connecting the cuneus to the anterior mesial temporal gyri.
caption: Medial surface of right cerebral hemisphere. Some of major association tracts are depicted. Inferior longitudinal fasciculus labeled at bottom right, in red.
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