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This article is part of the supplement: Abstracts from the Twenty Second Annual Computational Neuroscience Meeting: CNS*2013

Open Access Poster presentation

Mathematical model of the thalamo-cortical loop by dysfunction in schizophrenia

Nils Rosjat*, Silvia Daun-Gruhn and Svitlana Popovych

Author Affiliations

Emmy-Noether Research Group of Computational Biology, Department of Animal Physiology, University of Cologne, 50674 Cologne, Germany

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BMC Neuroscience 2013, 14(Suppl 1):P320  doi:10.1186/1471-2202-14-S1-P320


The electronic version of this article is the complete one and can be found online at: http://www.biomedcentral.com/1471-2202/14/S1/P320


Published:8 July 2013

© 2013 Rosjat 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

Preceding experimental results suggest that disturbances of auditory information processing within the thalamocortical loop are a core issue relating schizophrenia [1]. Wide differences between schizophrenia patients and healthy controls were found in phase-locking of cortex EEG. We derive a phenomenological mathematical model based on coupled phase oscillators with continuous distributed frequencies to describe the neural activity of the thalamocortical loop. Concerning phase-locking effects observed we examine the influence of the bidirectional coupling strengths between the thalamic and the cortical area. We widen this approach to a model consisting of a thalamic area coupled to three cortical areas, each modeled by a set of nonidentical phase oscillators. At the investigation of our model we use Ott-Antonsen theory [2] and Pikovsky-Rosenblum reduction methods [3]. The results derived from our mathematical model coincide with the experimental data obtained by EEG measurements. The model provides that modifying the coupling strength from the thalamic region to a cortical region effects the duration of phase synchronization and while modifying the coupling back to the thalamic region affects the strength of synchronization in this cortical area. Thus it supports the view that the coupling between the thalamic region and cortical regions is the responsible mechanism for dysfunction of the thalamo-cortical loop in schizophrenia.

References

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