Summary

Proceedings of the 2012 International Symposium on Nonlinear Theory and its Applications

2012

Session Number:B4L-B

Session:

Number:493

Synchronizability and dynamics of coupled neural mass oscillators

Daniel Malagarriga,  Jordi Garcia-Ojalvo,  Antonio J. Pons,  

pp.493-496

Publication Date:

Online ISSN:2188-5079

DOI:10.15248/proc.1.493

PDF download (359.9KB)

Summary:
We study the collective behavior of a system of coupled neural mass oscillators that represent the voxels of a cortical area of the brain. Each neural mass model, which describes three populations of cortical neurons linked to each other via excitatory and inhibitory connections, receives a periodic driving from subcortical structures that relay sensory inputs. We examine how the dynamics and synchronizability of the represented cortical voxels change with the inter-voxel coupling strength, for both excitatory and inhibitory coupling. Our results show that an intermediate level of excitatory coupling leads to a regime in which the dynamics is both irregular and synchronized among voxels. The results obtained shed light on how brain dynamics depends on coupling within cortical areas.

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