Middle Longitudinal Fasciculus in the Human Brain from Fiber Dissection

Igor Lima Maldonado (1, 2, 3) , Ilyess Zemmoura (1, 4) , Christophe Destrieux (1, 4)

1 iBraiN - Imaging, Brain & Neuropsychiatry
2 UFBA - Universidade Federal da Bahia
3 LE STUDIUM - LE STUDIUM
4 CHRU Tours - Centre Hospitalier Régional Universitaire de Tours

Although the Middle Longitudinal Fasciculus (MdLF) is not part of the insular lobe, it penetrates the temporal opercu-lum, which is manipulated or partially removed during surgical approaches to the insula. We present a comprehensive description of that fascicle and its anatomical relationships with neighboring structures that have been described in previous chapters. It has been hypothesized that MdLF plays a role in attention and language processing, however studies with peroperative subcor-tical electrostimulation or temporal lobectomies did not demonstrate permanent language deficits following resection of its anterior segment. The MdLF has close relationships to adjacent bundles, such as the arcuate fasciculus and the inferior fronto-occipital fasciculus that are required to be recognized and differentiated for adequate interpretation of tractography images and surgical planning.

Mots clés: anatomy; fiber bundles; middle longitudinal fascicu- lus; temporal operculum; middle longitudinal fasciculus

Domaines: Neurosciences [q-bio.NC]

Igor Lima Maldonado, Ilyess Zemmoura, Christophe Destrieux. Middle Longitudinal Fasciculus in the Human Brain from Fiber Dissection. Island of Reil (Insula) in the Human Brain, Springer International Publishing, pp.71-75, 2018, ⟨10.1007/978-3-319-75468-0_6⟩. ⟨hal-02539621⟩