Dynamic causal models of neural system dynamics:current state and future extensions

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Stephan, Klaas E, Harrison, Lee M, Kiebel, Stefan J, David, Olivier, Penny, Will D. ORCID: https://orcid.org/0000-0001-9064-1191 and Friston, Karl J (2007) Dynamic causal models of neural system dynamics:current state and future extensions. Journal of Biosciences, 32 (1). pp. 129-144. ISSN 0250-5991

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Abstract

Complex processes resulting from interaction of multiple elements can rarely be understood by analytical scientific approaches alone; additional, mathematical models of system dynamics are required. This insight, which disciplines like physics have embraced for a long time already, is gradually gaining importance in the study of cognitive processes by functional neuroimaging. In this field, causal mechanisms in neural systems are described in terms of effective connectivity. Recently, dynamic causal modelling (DCM) was introduced as a generic method to estimate effective connectivity from neuroimaging data in a Bayesian fashion. One of the key advantages of DCM over previous methods is that it distinguishes between neural state equations and modality-specific forward models that translate neural activity into a measured signal. Another strength is its natural relation to Bayesian model selection (BMS) procedures. In this article, we review the conceptual and mathematical basis of DCM and its implementation for functional magnetic resonance imaging data and event-related potentials. After introducing the application of BMS in the context of DCM, we conclude with an outlook to future extensions of DCM. These extensions are guided by the long-term goal of using dynamic system models for pharmacological and clinical applications, particularly with regard to synaptic plasticity.

Item Type:	Article
Uncontrolled Keywords:	animals,bayes theorem,brain,humans,magnetic resonance imaging,neurological models,synapses
Faculty \ School:	Faculty of Social Sciences > School of Psychology
UEA Research Groups:	Faculty of Social Sciences > Research Centres > Centre for Behavioural and Experimental Social Sciences
Related URLs:	https://link.springer.com/article/10.100...
Depositing User:	Pure Connector
Date Deposited:	19 Aug 2017 05:06
Last Modified:	19 Apr 2023 22:33
URI:	https://ueaeprints.uea.ac.uk/id/eprint/64602
DOI:	10.1007/s12038-007-0012-5

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