The inferior longitudinal fasciculus (ILF) is traditionally considered one of the major occipitotemporal association tracts.

Some authors denied its existence because of the unclear results obtained in non-human brains.

[3][4] Using diffusion tensor imaging (DTI), several authors have confirmed the presence of this constant longitudinal pathway in humans.

[5][6][7][8][9] Some other studies of the ILF[10][11][12][13] based on Klingler's dissection method (a type of white matter blunt dissection, providing reliable data on the anatomy of major fibre bundles[14] and, in some cases, additional tractography[13][15] 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.

Based on these recent findings ILF can be described as a multi-functional white matter pathway involved in visually guided behavior (See Herbet et al. for review[28]).