Volume 126, Number 5, June 2019
|Number of page(s)||7|
|Published online||15 July 2019|
Partial synchronization in empirical brain networks as a model for unihemispheric sleep
1 Institut für Theoretische Physik, Technische Universität Berlin - Hardenbergstraße 36, 10623 Berlin, Germany
2 Institute of Computer Science of the Czech Academy of Sciences - Pod Vodarenskou vezi 2, 18207 Prague 8, Czech Republic
3 National Institute of Mental Health - Topolová 748, 250 67 Klecany, Czech Republic
4 Department of Mathematics EAS, Aston University Birmingham - Aston Triangle, Birmingham B4 7ET, UK
Received: 1 April 2019
Accepted: 12 June 2019
We analyze partial synchronization patterns in a network of FitzHugh-Nagumo oscillators with empirical structural connectivity measured in healthy human subjects. We report a dynamical asymmetry between the hemispheres, induced by the natural structural asymmetry. We show that the dynamical asymmetry can be enhanced by introducing the inter-hemispheric coupling strength as a control parameter for partial synchronization patterns. We discuss a minimum model elucidating the modalities of unihemispheric sleep in human brain, where one hemisphere sleeps while the other remains awake. In fact, this state is common among migratory birds and mammals like aquatic species.
PACS: 05.45.Xt – Synchronization; coupled oscillators / 87.19.lj – Neuronal network dynamics / 87.19.lp – Pattern formation: activity and anatomic
© EPLA, 2019
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