Email updates

Keep up to date with the latest news and content from BMC Neuroscience and BioMed Central.

This article is part of the supplement: Twenty First Annual Computational Neuroscience Meeting: CNS*2012

Open Access Poster presentation

Improved conditions for the generation of beta oscillations in the subthalamic nucleus-globus pallidus network

Alex Pavlides1*, S John Hogan2 and Rafal Bogacz3

Author Affiliations

1 Bristol Centre for Complexity Sciences and Department of Computer Science, University of Bristol, Bristol, UK

2 Department of Engineering Mathematics, University of Bristol, Bristol, UK

3 Department of Computer Science, University of Bristol, Bristol, UK

For all author emails, please log on.

BMC Neuroscience 2012, 13(Suppl 1):P116  doi:10.1186/1471-2202-13-S1-P116


The electronic version of this article is the complete one and can be found online at: http://www.biomedcentral.com/1471-2202/13/S1/P116


Published:16 July 2012

© 2012 Pavlides et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Poster presentation

A key pathology in the development of Parkinson’s disease is the occurrence of persistent beta oscillations, which are correlated with the difficulty of movement initiation. We investigate the network model composed of subthalamic nucleus (STN) and globus pallidus (GP) developed by Nevado Holgado et al. [1] who identified the conditions under which this circuit could generate beta oscillations. Our work extends their analysis by deriving improved analytic stability conditions for realistic values of the synaptic transmission delay between STN and GP neurons. For the range of synaptic transmission delays measured experimentally, the improved conditions are significantly closer to the results of simulations. Furthermore, our analysis explains how changes in cortical and striatal input to the STN-GP network influence oscillations generated by the circuit. Since we have identified when a system of mutually connected populations of excitatory and inhibitory neurons can generate oscillations, our results may also find applications in the study of neural oscillations produced by assemblies of excitatory and inhibitory neurons in other brain regions.

References

  1. Nevado Holgado A, Terry J, Bogacz R: Conditions for the Generation of Beta Oscillations in the Subthalamic Nucleus-Globus Pallidus Network.

    Journal of Neuroscience 2010, 30(37):12340-12352. PubMed Abstract | Publisher Full Text OpenURL