Spatio-temporal dependencies in functional connectivity in rodent cortical cultures

Matthew C Spencer, Julia H. Downes, Dimitris Xydas, Mark W. Hammond, Victor M Becerra, Benjamin J. Whalley, Kevin Warwick, Slowomir Nasuto

    Research output: Contribution to journalArticlepeer-review


    Models of functional connectivity in cortical cultures on multi-electrodes arrays may aid in understanding how cognitive pathways form and improve techniques that aim to interface with neuronal systems. To enable research on such models, this study uses both data- and model-driven approaches to determine what dependencies are present in and between functional connectivity networks derived from bursts of extracellularly recorded activity. Properties of excitation in bursts were analysed using correlative techniques to assess the degree of linear dependence and then two parallel techniques were used to assess functional connectivity. Three models presenting increasing levels of spatio-temporal dependency were used to capture the dynamics of individual functional connections and their consistencies were verified using surrogate data. By comparing network-wide properties between model generated networks and functional networks from data, complex interdependencies were revealed. This indicates the persistent co-activation of neuronal pathways in spontaneous bursts, as can be found in whole brain structures.
    Original languageEnglish
    Pages (from-to)156-163
    Number of pages8
    JournalPaladyn: Journal of Behavioral Robotics
    Issue number3
    Publication statusPublished - 2011


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