Contribution of the GABA shift to the transition from structural initialization to working stage in biologically realistic networks

Authors:
Andreas Herzog;Karsten Kube;Bernd Michaelis;Ana D. de Lima;Thomas Baltz;Thomas Voigt
Affiliations:
Institute of Electronics, Signal Processing and Communications, Otto-von-Guericke-University Magdeburg, 39016 Magdeburg, Germany;Institute of Electronics, Signal Processing and Communications, Otto-von-Guericke-University Magdeburg, 39016 Magdeburg, Germany;Institute of Electronics, Signal Processing and Communications, Otto-von-Guericke-University Magdeburg, 39016 Magdeburg, Germany;Department of Developmental Physiology, Institute of Physiology, Otto-von-Guericke-University Magdeburg, 39120 Magdeburg, Germany;Department of Developmental Physiology, Institute of Physiology, Otto-von-Guericke-University Magdeburg, 39120 Magdeburg, Germany;Department of Developmental Physiology, Institute of Physiology, Otto-von-Guericke-University Magdeburg, 39120 Magdeburg, Germany
Venue:
Neurocomputing
Year:
2008

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Abstract

Biological cortical neurons form functional networks through a complex set of developmental steps. A key process in early development is the transition of the spontaneous network dynamics from slow synchronous activity to a mature firing profile with complex high-order patterns of spikes and bursts. In the present modeling study we investigate the required properties of the network to initialize this transition by the shift of the chloride reversal potential, which switches the effect of the GABA synapses from depolarizing to hyperpolarizing. The simulated networks are generated by a statistical description of parameters for the neuron model and the network architecture.