Cited by 97Advanced Neuroimaging Techniques and ApplicationsFunctional Brain Connectivity StudiesMedical and Biological Sciences

New insights in the homotopic and heterotopic connectivity of the frontal portion of the human corpus callosum revealed by microdissection and diffusion tractography

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De Benedictis, Alessandro, Petit, Laurent, Descoteaux, Maxime, Marras, Carlo Efisio, Barbareschi, Mattia, Corsini, Francesco, Dallabona, Monica, Chioffi, Franco +1 more·2016·Human Brain Mapping

Abstract

Extensive studies revealed that the human corpus callosum (CC) plays a crucial role in providing large–scale bi‐hemispheric integration of sensory, motor and cognitive processing, especially within the frontal lobe. However, the literature lacks of conclusive data regarding the structural macroscopic connectivity of the frontal CC. In this study, a novel microdissection approach was adopted, to expose the frontal fibers of CC from the dorsum to the lateral cortex in eight hemispheres and in one entire brain. Post‐mortem results were then combined with data from advanced constrained spherical deconvolution in 130 healthy subjects. We demonstrated as the frontal CC provides dense inter‐hemispheric connections. In particular, we found three types of fronto‐callosal fibers, having a dorso‐ventral organization. First, the dorso‐medial CC fibers subserve homotopic connections between the homologous medial cortices of the superior frontal gyrus. Second, the ventro‐lateral CC fibers subserve homotopic connections between lateral frontal cortices, including both the middle frontal gyrus and the inferior frontal gyrus, as well as heterotopic connections between the medial and lateral frontal cortices. Third, the ventro‐striatal CC fibers connect the medial and lateral frontal cortices with the contralateral putamen and caudate nucleus. We also highlighted an intricate crossing of CC fibers with the main association pathways terminating in the lateral regions of the frontal lobes. This combined approach of ex vivo microdissection and in vivo diffusion tractography allowed demonstrating a previously unappreciated three‐dimensional architecture of the anterior frontal CC, thus clarifying the functional role of the CC in mediating the inter‐hemispheric connectivity. Hum Brain Mapp 37:4718–4735, 2016. © 2016 Wiley Periodicals, Inc.

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  • Post-mortem dissection with Klingler's method reveals the macroscopic organization of the human brain white matter, although this method shares some limitations of tractography in complex fiber configurations or near the cortex.

    “Currently, post-mortem dissection with Klingler’s method reveals the macroscopic organization of the human brain white matter11, 62–64, although this method shares some of the mentioned limitations of tractography in complex fiber configurations or near the cortex.”

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Research works printed but not linked: 3

  1. D ejerine J (1892): Contribution a l' etude de la d eg en erescence des fibres du corps calleux. In: Masson, editeur, Bulletin de la Soci et e de Biologie. Paris (120, boulevard Saint-Germain). p 579-585.
  2. Meynert T (1888) Psychiatrie: Clinique Des Maladies Du Cerveau Ant erieur Bas ee Sur Sa Structure, Ses Fonctions Et Sa Nutri- tion. trans. G. Cousot. Bruxelles: A. Manceaux.
  3. r De Benedictis et al. r r 4734 r 10970193, 2016, 12, · DOI

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Authors
De Benedictis, A., Petit, L., Descoteaux, M., Marras, C. E., Barbareschi, M., Corsini, F., Dallabona, M., Chioffi, F., & Sarubbo, S.
Affiliations
  • Department of Neuroscience and Neurorehabilitation Neurosurgery Unit, Bambino Gesù Children's Hospital – IRCCS 4 Piazza Sant'Onofrio Roma 00165 Italy
  • Centre National de la Recherche Scientifique (FR)
  • Université de Sherbrooke (CA)
  • Bambino Gesù Children's Hospital (IT)
  • Ospedale Santa Chiara (IT)
Venue
Human Brain Mapping
Publisher
Wiley
Published
2016-08-08
Volume
37
Issue
12
Pages
4718-4735
ISSN
  • 1065-9471 (ISSN-L)
  • 1097-0193
OpenAlex
W2502730944
Cited by
97
References
94
Citations by year
2026: 6 · 2025: 12 · 2024: 3 · 2023: 9 · 2022: 12 · 2021: 13 · 2020: 9 · 2019: 12 · 2018: 13 · 2017: 6 · 2016: 2
FWCI
9.54
Type
journal article
Language
en
Open access
Locations
  • Human Brain Mapping (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Research Information System (Università degli Studi di Trento) (submittedVersion, cc-by-nc)
  • HAL (submittedVersion, other-oa)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Anatomy › Medical and Biological Sciences
Keywords
corpus callosum, interhemispheric connectivity, superior frontal gyrus, middle frontal gyrus, inferior frontal gyrus, putamen, caudate nucleus, frontal lobe
MeSH terms
Adult, Cerebral Cortex, Corpus Callosum, Female, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Middle Aged, Neural Pathways, Microdissection, Young Adult

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