Charting the Dynamics of Neurocognitive Networks

Steven L. Bressler, Ph.D.
Professor, Center for Complex Systems & Brain Sciences, Florida Atlantic UniversityAbstract:
There has long been a dichotomy in understanding higher-order functions of the cerebral cortex. The localizationist tradition has sought to identify such functions with specific cortical areas, whereas the globalist tradition has viewed all higher-order functions as emerging from the cerebral cortex as a whole. A reconciliation of these opposing viewpoints has come with the growing realization that neurocognitive networks are of central importance to cortical function. Neurocognitive networks are composed of distributed neuronal assemblies in the cortex and sub cortical structures that dynamically engage in cooperative interactions to accomplish specific cognitive operations. A major challenge for cognitive neuroscience is to develop analytic tools for the precise characterization of the dynamics of neurocognitive networks. I will describe an approach to this characterization based on the construction of network graphs derived from autoregressive time series analysis of cortical population activity. I will also present experimental evidence from non-human primates and humans that this approach provides useful insights into the neural basis of cognitive function.

Location: Olin Hall of Engineering (OHE) - 100C (Studio C)

Audiences: Everyone Is Invited

Contact: Talyia Veal