Texte intégral
1The use of virtual endocasts allows investigation of the folding configurations of the cerebral cortex of extinct species. However, is that really possible? Our goal is to help answer this question by qualifying and quantifying the subjective identifications of the foldings on endocasts compared to their real configurations on the brain. We invited 14 paleoneurologists to manually reconstruct the foldings they could recognize in a proxy-endocast obtained from an in-vivo MRI. MRI data were obtained on a volunteer (female, 33 y/o) during a unique session with complementary sequences. The brain structures segmentation and the folding labelling were obtained with Morphologist with the T1. The MRI UTE sequence was used to segment the bone and create the proxy-endocast with the BrainVisa software. Paleoneurologists were asked to label the endocast. Their manual reconstructions were compared with the real sulci using the Dice index in conjunction with a similarity measure based on position and shape of the foldings. Results show that foldings located closer to the base of the skull are more accurately identified in location and shape than those located in the superior region of the brain, such as the Central Sulcus that was largely misidentified and positioned closer to the precentral region. Traces that appear to be foldings but are not were also identified. The nature of some of these traces remains unknown while in particular one misidentified trace corresponds to another type of structure: the parieto-occipital suture. We hope that the information presented in this work will help the palaeoanthropology community to be more careful with the identification of foldings that might be false or largely misidentified and to validate those that are generally well reconstructed, providing support and confidence in the subsequent studies that derive from them.
Haut de page
Pour citer cet article
Référence électronique
Nicole Labra, Yann Leprince, Denis Rivière, Mathieu Santin, Jean François Mangin, Lou Albessard-Ball, Amélie Beaudet, Douglas Broadfield, Emiliano Bruner, Kristian J. Carlson, Zachary Cofran, Dean Falk, Emmanuel Gilissen, Aida Gómez-Robles, Simon Neubauer, Alannah Pearson, Carolin Röding, Yameng Zhang, Aurélien Mounier et Antoine Balzeau, « Comparative study of manual identification of brain foldings in a living human brain using a proxy-endocast obtained from MRI », Bulletins et mémoires de la Société d’Anthropologie de Paris [En ligne], 35(S) | 2023, mis en ligne le 14 janvier 2023, consulté le 28 janvier 2023. URL : http://journals.openedition.org/bmsap/11242 ; DOI : https://doi.org/10.4000/bmsap.11242
Haut de page
Auteurs
UMR 7194 HNHP, MNHN, CNRS, UPVD, Département Homme et Environnement, Musée de l’Homme, Paris, France
n.labra[at]ucl.ac.uk
UNIACT, NeuroSpin, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
Baobab, NeuroSpin, CEA, Université Paris-Saclay
Centre de NeuroImagerie de Recherche – CENIR, ICM – Institut du Cerveau et de la Moelle épinière, Hôpital Pitié-Salpêtrière, Paris, France
Articles du même auteur
NeuroSpin, CEA, Université Paris-Saclay
UMR 7194 HNHP, MNHN, CNRS, UPVD, Département Homme et Environnement, Musée de l’Homme, Paris, France ; PalaeoHub, Department of Archaeology, University of York, York, United Kingdom
Articles du même auteur
-
The frontal sinuses during human evolution
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
Frontal sinus variation in large samples of extant species of the genera Pan, Gorilla and Homo
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
34(S) | 2021
-
Variation des sinus frontaux chez les espèces actuelles des genres Pan, Gorilla et Homo
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
33 (2) | 2021
Department of Archaeology, University of Cambridge, Cambridge, United Kingdom
Articles du même auteur
-
The frontal sinuses during human evolution
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
Morphological variation and species concept in palaeoanthropology: comments on Australopithecus from southern Africa
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
34 (2) | 2022
-
The endocast of Border Cave 1 (South Africa) and its implication in the evolutionary history of the human brain
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
34(S) | 2021
-
One or more Australopithecus species at Sterkfontein (South Africa)? How to interpret morphological diversity within the fossil record
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
33(S) | 2021
Department of Cell Biology, University of Miami, Miami, Florida, USA
Centro Nacional de Investigación sobre la Evolución Humana, Burgos, Spain
Evolutionary Studies Institute, University of the Witwatersrand, Palaeosciences Centre, Johannesburg, Wits, South Africa ; Department of Integrative Anatomical Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
Articles du même auteur
Anthropology Department, Vassar College, Poughkeepsie, New York, USA
Florida State University, Tallahassee, Florida, USA
Department of African Zoology, Royal Museum for Central Africa, Tervuren, Belgium
Articles du même auteur
-
Bone mineral density of human femurs from a documented age series (Schoten, Belgium, 19th-20th centuries)
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
PaleoBRAIN: bringing the brain of Homo erectus and Neandertals back to life
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
34(S) | 2021
Department of Anthropology, University College London, London, United Kingdom
Articles du même auteur
Institute of Anatomy and Cell Biology, Johannes Kepler University Linz, Austria
School of Archaeology and Anthropology, Australian National University, Canberra, Australia
Paleoanthropology, Institute for Archaeological Sciences and Senckenberg Centre for Human Evolution and Paleoenvironment, Eberhard Karls University of Tübingen, Tübingen, Germany
Articles du même auteur
Institute of Cultural Heritage, Shandong University, Qingdao, Shandong, China
UMR 7194 HNHP, MNHN, CNRS, UPVD, Département Homme et Environnement, Musée de l’Homme, Paris, France ; Turkana Basin Institute, Nairobi, Kenya
Articles du même auteur
-
Applying cladistics to geometric morphometrics data. Application on genus Pongo, Gorilla, Pan and Homo
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
The frontal sinuses during human evolution
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
Prediction of ancestral morphologies of the femur of the hominins using phylogenetic modeling
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
Evolution of the calvarium of the hominins from the end of the Middle Pleistocene to the emergence of Homo sapiens: a study using geometric morphometrics
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
Populational affinities in pre-colonial West Africa: the case of the Iroungou burial cave (Gabon, 14th-15th centuries CE)
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
How to define humanity? A theoretical and empirical perspective
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
34 (2) | 2022
- Tous les textes...
UMR 7194 HNHP, MNHN, CNRS, UPVD, Département Homme et Environnement, Musée de l’Homme, Paris, France ; Department of African Zoology, Royal Museum for Central Africa, Tervuren, Belgium
Articles du même auteur
-
The frontal sinuses during human evolution
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
Study of the links between laterality and dexterity in humans in a perspective to better understanding the evolution of human dexterity
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
Explore the relationship between the brain and the endocast in living humans
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
Evolution of the calvarium of the hominins from the end of the Middle Pleistocene to the emergence of Homo sapiens: a study using geometric morphometrics
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
Anatomie comparée et diversité du système veineux diploïque dans le genre Homo
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
-
Accroissement de l’asymétrie de l’endocrâne humain dans le contexte des changements évolutifs chez les hominidés
Paru dans
Bulletins et mémoires de la Société d’Anthropologie de Paris,
35(S) | 2023
- Tous les textes...
Haut de page