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Neuroscience serving archaeologists : unprecedented deciphering prehistoric graphic expressions.

​A unique interdisciplinary collaboration between archaeologists and researchers of NeuroSpin (GIN, Bordeaux University/CEA/CNRS) offers for the first time analysis elements  of the symbolism of prehistoric traces found on ancient Paleolithic engravings. These abstract patterns are analyzed by the same brain areas than those that recognize objects and also activate a well-known left hemisphere area involved in the treatment of written language.

Published on 3 July 2019


The earliest human graphic productions, consisting of abstract patterns engraved on a variety of media, date to the Lower and Middle Palaeolithic. They are associated with anatomically modern and archaic hominins. The nature and significance of these engravings are still under question. To address this issue, we used functional magnetic resonance imaging to compare brain activations triggered by the perception of engraved patterns dating between 540 000 and 30 000 years before the present with those elicited by the perception of scenes, objects, symbol-like characters and written words. The perception of the engravings bilaterally activated regions along the ventral route in a pattern similar to that activated by the perception of objects, suggesting that these graphic productions are processed as organized visual representations in the brain. Moreover, the perception of the engravings led to a leftward activation of the visual word form area. These results support the hypothesis that these engravings have the visual properties of meaningful representations in present-day humans, and could have served such purpose in early modern humans and archaic hominins.

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