BPCPPDYSOE21 – wissenschaftliches Programm
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SOE: Fachverband Physik sozio-ökonomischer Systeme
SOE 8: Partial Synchronization in Networks (Focus Session joint with DY and BP) (joint session SOE/DY)
SOE 8.1: Vortrag
Mittwoch, 24. März 2021, 09:00–09:20, SOEa
Partial synchronization as a model for uni-hemispheric sleep — •Jakub Sawicki1, Lukas Ramlow1,2, and Eckehard Schöll1,3 — 1Institute of Theoretical Physics, Technische Universität Berlin, Germany — 2Humboldt University of Berlin, Berlin, Germany — 3Potsdam Institute for Climate Impact Research, Potsdam, Germany
Uni-hemispheric slow-wave sleep is a dynamical state of the brain where one hemisphere is asleep while the other remains awake. This state can also be characterized by simultaneous but spatially separated occurrence of high and low degree of synchronization in the sleeping and the awake hemisphere, respectively. Therefore, this real world phenomenon can be described in terms of partial synchronization characterizing patterns of coexistence of synchronized and desynchronized parts of a network. Here we investigate the occurrence of partial synchronization patterns in empirical structural connectivities of the human brain. The connectivities consist of ninety regions of interest using the Automated Anatomical Labeling (AAL) Atlas, and were derived by magnetic resonance imaging (MRI) based probabilistic diffusion tractography. The local dynamics is modeled by FitzHugh-Nagumo oscillators. We demonstrate under which conditions partial synchronization patterns with respect to the brain hemispheres can be found.