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Estimating thumb–index finger precision grip and manipulation potential in extant and fossil primates

Feix, Thomas, Kivell, Tracy L., Pouydebat, Emmanuelle, Dollar, Aaron M. (2015) Estimating thumb–index finger precision grip and manipulation potential in extant and fossil primates. Interface, 12 (106). ISSN 1742-5689. (doi:10.1098/rsif.2015.0176) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1098/rsif.2015.0176

Abstract

Primates, and particularly humans, are characterized by superior manual dexterity compared with other mammals. However, drawing the biomechanical link between hand morphology/behaviour and functional capabilities in non-human primates and fossil taxa has been challenging. We present a kinematic model of thumb–index precision grip and manipulative movement based on bony hand morphology in a broad sample of extant primates and fossil hominins. The model reveals that both joint mobility and digit proportions (scaled to hand size) are critical for determining precision grip and manipulation potential, but that having either a long thumb or great joint mobility alone does not necessarily yield high precision manipulation. The results suggest even the oldest available fossil hominins may have shared comparable precision grip manipulation with modern humans. In particular, the predicted human-like precision manipulation of Australopithecus afarensis, approximately one million years before the first stone tools, supports controversial archaeological evidence of tool-use in this taxon.

Item Type: Article
DOI/Identification number: 10.1098/rsif.2015.0176
Uncontrolled keywords: grasping, Australopithecus, Neanderthal, manipulation, kinematic model, primates
Subjects: Q Science
Q Science > QM Human anatomy
Divisions: Faculties > Social Sciences > School of Anthropology and Conservation
Faculties > Social Sciences > School of Anthropology and Conservation > Biological Anthropology
Depositing User: Tracy Kivell
Date Deposited: 24 Apr 2015 22:01 UTC
Last Modified: 29 May 2019 14:27 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/48050 (The current URI for this page, for reference purposes)
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