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Hippocampal and prefrontal processing of network topology to simulate the future

Javadi, Amir-Homayoun, Emo, Beatrix, Howard, Lorelei R., Zisch, Fiona E., Yu, Yichao, Knight, Rebecca, Pinelo Silva, Joao, Spiers, Hugo J. (2017) Hippocampal and prefrontal processing of network topology to simulate the future. Nature Communications, 8 . Article Number 14652. ISSN 2041-1723. (doi:10.1038/ncomms14652) (KAR id:61006)

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Topological networks lie at the heart of our cities and social milieu. However, it remains unclear how and when the brain processes topological structures to guide future behaviour during everyday life. Using fMRI in humans and a simulation of London (UK), here we show that, specifically when new streets are entered during navigation of the city, right posterior hippocampal activity indexes the change in the number of local topological connections available for future travel and right anterior hippocampal activity reflects global properties of the street entered. When forced detours require re-planning of the route to the goal, bilateral inferior lateral prefrontal activity scales with the planning demands of a breadth-first search of future paths. These results help shape models of how hippocampal and prefrontal regions support navigation, planning and future simulation.

Item Type: Article
DOI/Identification number: 10.1038/ncomms14652
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: Faculties > Social Sciences > School of Psychology > Cognitive Psychology
Depositing User: Amir-Homayoun Javadi
Date Deposited: 22 Mar 2017 18:51 UTC
Last Modified: 07 Oct 2020 11:10 UTC
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