Regensburg 2019 – wissenschaftliches Programm

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SOE: Fachverband Physik sozio-ökonomischer Systeme

SOE 12: Poster

SOE 12.16: Poster

Dienstag, 2. April 2019, 16:00–19:00, Poster A

Partial synchronization in 2-community networks of FitzHugh-Nagumo oscillators with empirical structural connectivities — Lukas Ramlow, •Jakub Sawicki, and Eckehard Schöll — Institute of Theoretical Physics, Technische Universität Berlin, Germany

Partial synchronization includes patterns of coexistence of a synchronized and desynchronized subgroup of oscillators. A real world phenomenon where this can be found is uni-hemispheric slow-wave sleep 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. 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.