Une étude lie la droiterie humaine à la bipédie et au développement cérébral

19 mai 2026

Rapporté par l'IA

Des chercheurs de l'Université d'Oxford ont découvert que la marche debout et le développement d'un cerveau plus volumineux sont probablement à l'origine de la forte préférence pour la main droite observée chez les humains modernes. Ces conclusions sont issues d'une analyse d'espèces de primates et d'homininés éteints.

Une équipe dirigée par le Dr Thomas A. Püschel a examiné des données provenant de 2 025 singes et grands singes répartis sur 41 espèces. Ils ont utilisé la modélisation bayésienne pour tester des facteurs tels que la taille du cerveau et le rapport entre la longueur des bras et celle des jambes, un indicateur de la locomotion bipède. Une fois ces caractéristiques intégrées, les humains n'apparaissaient plus comme une exception évolutive parmi les primates.

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mercredi 20 mai 2026 22h29

Une étude lie la droiterie humaine à la bipédie et au développement cérébral

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