Archive: Stochastik Rhein-Main

Events

Date Category Speakers Title

07.05.2019 Oberseminar Mainz, Rhein-Main-Kolloquium

Cornelia Pokalyuk ((Goethe-Universität Frankfurt/Main))

Cornelia Pokalyuk (Goethe-Universität Frankfurt/Main) TBA

Read more

15.04.2025 Rhein-Main-Kolloquium

Janina Hesse (Leibniz-Institut für Resilienzforschung, Mainz)

Oberseminar Mainz

How single cell properties can change network synchronization: The saddle-node loop bifurcation in neuron models - Neurons have traditionally been classified into two types depending on their frequency-input curve. Both types are associated with a particular dynamic transition from rest to spiking. Our work highlights a third transition, for which we found experimental evidence in hippocampal slices. For typical Hodgkin-Huxley-like neuron model, we present a universal bifurcation structure, with the separation of timescale between voltage and ion channel dynamics as one of the bifurcation parameters. We predict that the strongest changes in synchronization with small parameter changes occur at a particular co-dimension two bifurcation, the saddle-node loop bifurcation, and we present characteristics of this transition, from changes in firing rate to phase response curve and synchronization. We will conclude with a short overview over our current research on stress resilience. Read more