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Supraorbital morphology and social dynamics in human evolution

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Supraorbital morphology and social dynamics in human evolution. / Godinho, Ricardo Miguel; O'Higgins, Paul; Spikins, Penny.

In: Nature Ecology and Evolution, 09.04.2018.

Research output: Contribution to journalArticle

Harvard

Godinho, RM, O'Higgins, P & Spikins, P 2018, 'Supraorbital morphology and social dynamics in human evolution', Nature Ecology and Evolution. https://doi.org/10.1038/s41559-018-0528-0

APA

Godinho, R. M., O'Higgins, P., & Spikins, P. (2018). Supraorbital morphology and social dynamics in human evolution. Nature Ecology and Evolution. https://doi.org/10.1038/s41559-018-0528-0

Vancouver

Godinho RM, O'Higgins P, Spikins P. Supraorbital morphology and social dynamics in human evolution. Nature Ecology and Evolution. 2018 Apr 9. https://doi.org/10.1038/s41559-018-0528-0

Author

Godinho, Ricardo Miguel ; O'Higgins, Paul ; Spikins, Penny. / Supraorbital morphology and social dynamics in human evolution. In: Nature Ecology and Evolution. 2018.

Bibtex - Download

@article{c4f8e3800d50427082fecfd360e284e9,
title = "Supraorbital morphology and social dynamics in human evolution",
abstract = "Uniquely, with respect to Middle Pleistocene hominins, anatomically modern humans do not possess marked browridges, and have a more vertical forehead with mobile eyebrows that play a key role in social signalling and communication. The presence and variability of browridges in archaic Homo and their absence in ourselves have led to debate concerning their morphogenesis and function, with two main hypotheses being put forward; that browridge morphology is the result of the spatial relationship between the orbits and the braincase, and that browridge morphology is significantly impacted by biting mechanics. Here we virtually manipulate browridge morphology of an archaic hominin (Kabwe 1), showing that it is much larger than the minimum required to fulfil spatial demands and that browridge size has little impact on mechanical performance during biting. Since browridge morphology in this fossil is not driven by spatial and mechanical requirements alone, the role of the supraorbital region in social communication is a potentially significant factor. We propose that conversion of the large browridges of our immediate ancestors to a more vertical frontal in modern humans allowed highly mobile eyebrows to display subtle affiliative emotions.",
author = "Godinho, {Ricardo Miguel} and Paul O'Higgins and Penny Spikins",
note = "This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details",
year = "2018",
month = "4",
day = "9",
doi = "10.1038/s41559-018-0528-0",
language = "English",
journal = "Nature Ecology and Evolution",
issn = "2397-334X",
publisher = "Nature Publishing Group",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Supraorbital morphology and social dynamics in human evolution

AU - Godinho, Ricardo Miguel

AU - O'Higgins, Paul

AU - Spikins, Penny

N1 - This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

PY - 2018/4/9

Y1 - 2018/4/9

N2 - Uniquely, with respect to Middle Pleistocene hominins, anatomically modern humans do not possess marked browridges, and have a more vertical forehead with mobile eyebrows that play a key role in social signalling and communication. The presence and variability of browridges in archaic Homo and their absence in ourselves have led to debate concerning their morphogenesis and function, with two main hypotheses being put forward; that browridge morphology is the result of the spatial relationship between the orbits and the braincase, and that browridge morphology is significantly impacted by biting mechanics. Here we virtually manipulate browridge morphology of an archaic hominin (Kabwe 1), showing that it is much larger than the minimum required to fulfil spatial demands and that browridge size has little impact on mechanical performance during biting. Since browridge morphology in this fossil is not driven by spatial and mechanical requirements alone, the role of the supraorbital region in social communication is a potentially significant factor. We propose that conversion of the large browridges of our immediate ancestors to a more vertical frontal in modern humans allowed highly mobile eyebrows to display subtle affiliative emotions.

AB - Uniquely, with respect to Middle Pleistocene hominins, anatomically modern humans do not possess marked browridges, and have a more vertical forehead with mobile eyebrows that play a key role in social signalling and communication. The presence and variability of browridges in archaic Homo and their absence in ourselves have led to debate concerning their morphogenesis and function, with two main hypotheses being put forward; that browridge morphology is the result of the spatial relationship between the orbits and the braincase, and that browridge morphology is significantly impacted by biting mechanics. Here we virtually manipulate browridge morphology of an archaic hominin (Kabwe 1), showing that it is much larger than the minimum required to fulfil spatial demands and that browridge size has little impact on mechanical performance during biting. Since browridge morphology in this fossil is not driven by spatial and mechanical requirements alone, the role of the supraorbital region in social communication is a potentially significant factor. We propose that conversion of the large browridges of our immediate ancestors to a more vertical frontal in modern humans allowed highly mobile eyebrows to display subtle affiliative emotions.

UR - https://rdcu.be/K2gy

U2 - 10.1038/s41559-018-0528-0

DO - 10.1038/s41559-018-0528-0

M3 - Article

JO - Nature Ecology and Evolution

T2 - Nature Ecology and Evolution

JF - Nature Ecology and Evolution

SN - 2397-334X

ER -