Cognitive Demands of Lower Paleolithic Toolmaking - Aix-Marseille Université Access content directly
Journal Articles PLoS ONE Year : 2015

Cognitive Demands of Lower Paleolithic Toolmaking

Dietrich Stout
  • Function : Correspondent author
  • PersonId : 971672

Connectez-vous pour contacter l'auteur
Nada Khreisheh
  • Function : Author

Abstract

Stone tools provide some of the most abundant, continuous, and high resolution evidence of behavioral change over human evolution, but their implications for cognitive evolution have remained unclear. We investigated the neurophysiological demands of stone toolmaking by training modern subjects in known Paleolithic methods ("Oldowan", "Acheulean") and collecting structural and functional brain imaging data as they made technical judgments (outcome prediction, strategic appropriateness) about planned actions on partially completed tools. Results show that this task affected neural activity and functional connectivity in dorsal prefrontal cortex, that effect magnitude correlated with the frequency of correct strategic judgments, and that the frequency of correct strategic judgments was predictive of success in Acheulean, but not Oldowan, toolmaking. This corroborates hypothesized cognitive control demands of Acheulean toolmaking, specifically including information monitoring and manipulation functions attributed to the "central executive" of working memory. More broadly, it develops empirical methods for assessing the differential cognitive demands of Paleolithic technologies, and expands the scope of evolutionary hypotheses that can be tested using the available archaeological record.
Fichier principal
Vignette du fichier
fetchObject.pdf (979.2 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

hal-01215840 , version 1 (15-10-2015)

Identifiers

Cite

Dietrich Stout, Erin Hecht, Nada Khreisheh, Bruce Bradley, Thierry Chaminade. Cognitive Demands of Lower Paleolithic Toolmaking. PLoS ONE, 2015, 10 (e0121804), ⟨10.1371/journal.pone.0121804⟩. ⟨hal-01215840⟩

Collections

CNRS UNIV-AMU INT
45 View
102 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More