Posts Tagged 'Acheulean'

Haptic cognition

We have now published a second perspective paper on cognitive archaeology and visuospatial integration, this time particularly focused on haptic experience and prehistoric tool handling. The article reviews issues in paleoneurology, parietal evolution and body cognition, and then presents three examples of methodological approaches that can be useful to investigate hand-tool relationships: shape analysis, grasping patterns, and electrodermography. The whole perspective is intimately associated with theories in extended cognition and embodiment. It is important to take in mind that this does not precisely deal with tool-making or tool functional use, but with tool sensing. These three aspects (making, using, and sensing) are cognitively and evolutionarily related, but they are also influenced by distinct biological factors. Tool sensing is something associated with haptic feedback, body cognition and perception, and tool integration in the body scheme. Prosthetic capacity and cognitive extension deal more with sensing (for example, body-tool integration) than with mechanical issues (like, for example, manual precision). Electrodermography can reveal patterns of attention and emotional engagement during the haptic experience. All this is probably part of a powerful visuospatial sketchpad, a crucial component when taking into account the traditional models on working memory. This article is published in a volume of the series Current Topics in Behavioral Neurosciences, entitled “Processes of Visuo-spatial Attention and Working Memory”, edited by Timothy Hodgson (University of Lincoln). This week we have also published a preliminary survey on hand-tool morphometrics.

Electrodermal archaeology

After all those surveys on parietal lobes and parietal evolution, some years ago we began investigating some functions particularly associated with the parietal cortex, and generically labeled as visuospatial integration. Some visuospatial behaviors can be inferred in fossils, according to anatomical and archaeological evidence. In my lab, we are interested in aspects bridging cognition, body, and tools. In a recent paper published in Progress in Brain Research we have applied electrodermal analysis to investigate the cognitive response during a haptic experience with stone tools. Electrodermal signals have been employed here to evaluate changes in emotion and attention during stone tool manipulation, as to evidence whether different tools exert different cognitive responses when handled. New methods for cognitive archaeology!

 

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The paper is part of a volume entitled “Cerebral Lateralization and Cognition: Evolutionary and Developmental Investigations of Behavioral Biases“, edited by Gillian Forrester, William Hopkins, Kristelle Hudry and Annukka Lindell.


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