Cited by 55Advanced Neuroimaging Techniques and ApplicationsMedical and Biological SciencesNeurobiology of Language and Bilingualism

Anatomical variability of the arcuate fasciculus: a systematical review

Bernard, Florian, Zemmoura, Ilyess, Ter Minassian, Aram, Lemée, Jean-Michel, Menei, Philippe·2019·Surgical and Radiologic Anatomy

Abstract

Purpose The arcuate fasciculus (AF) is a white matter fibers tract that links the lateral temporal with the frontal cortex. The AF can be divided into three components: two superficial indirect short tracts (anterior and posterior) and one deep direct long tract. Both DTI and white matter dissections studies find differences regarding the anatomy of the AF, especially its cortical connections. This paper aims at providing a comprehensive anatomical classification of the AF, using the terminologia anatomica.Methods Articles (n = 478) were obtained from a systematical PRISMA review. Studies which focused on primates, unhealthy subjects, as well as studies without cortical termination description and review articles were excluded from the analysis. One hundred and ten articles were retained for full-text examination, of which 19 finally fulfilled our criteria to be included in this review.Results We classified main descriptions and variations of each segment of the AF according to fiber orientation and cortical connections. Three types of connections were depicted for each segment of the AF. Concerning the anterior segment, most of the frontal fibers (59.35%) ran from the ventral portion of the precentral gyrus and the posterior part of the pars opercularis, to the supramarginal gyrus (85.0%). Main fibers of the posterior segment of the AF ran from the posterior portion of the middle temporal gyrus (100%) to the angular gyrus (92.0%). In main descriptions of the long segment of the AF, fibers ran from both the ventral portion of the precentral gyrus and posterior part of the pars opercularis (63.9%) to the middle and inferior temporal gyrus (60.3%). Minor subtypes were described in detail in the article.Conclusion We provide a comprehensive classification of the anatomy of the AF, regarding the orientation and cortical connections of its fibers. Although fiber orientation is very consistent, cortical endings of the AF may be different from one study to another, or from one individual to another which is a key element to understand the anatomical basis of current models of language or to guide intraoperative stimulation during awake surgery.

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Crossref · 10.1007/s00276-019-02244-5

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  • The anterior segment of the arcuate fasciculus connects the posterior inferior frontal cortex with the parieto-temporal cortex.

    “the anterior segment of the arcuate fasciculus (also referred to as the third branch of the superior longitudinal fasciculus or SLF III) that connects the posterior inferior frontal cortex with the parieto-temporal cortex”

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Authors
Bernard, F., Zemmoura, I., Ter Minassian, A., Lemée, J.-M., & Menei, P.
Affiliations
  • Centre Hospitalier Universitaire d'Angers (FR)
  • Université de Tours (FR)
Corresponding author
Bernard, Florian
Venue
Surgical and Radiologic Anatomy
Published
2019-04-26
Volume
41
Issue
8
Pages
889-900
ISSN
  • 0930-1038 (ISSN-L)
  • 1279-8517
OpenAlex
W2941559924
Cited by
55
References
53
Citations by year
2026: 4 · 2025: 8 · 2024: 4 · 2023: 6 · 2022: 19 · 2021: 8 · 2020: 4 · 2019: 1
FWCI
1.20
Type
journal article
Language
en
Open access
closed
Locations
  • Surgical and Radiologic Anatomy (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Health Sciences › Medicine › Anatomy › Medical and Biological Sciences
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neurobiology of Language and Bilingualism
Keywords
arcuate fasciculus, anatomical variation, white matter tracts, cortical connectivity, fiber orientation, precentral gyrus, supramarginal gyrus, angular gyrus, middle temporal gyrus, inferior temporal gyrus, language models, awake craniotomy, intraoperative stimulation
MeSH terms
Frontal Lobe, Humans, Neural Pathways, Speech, Temporal Lobe, Wakefulness, Neurosurgical Procedures, Diffusion Tensor Imaging, Anatomic Variation, Intraoperative Neurophysiological Monitoring, White Matter

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