https://doi.org/10.1140/epjb/e2010-00073-x
Noise-induced synchronization in bidirectionally coupled type-I neurons
1
Potsdam Institute for Climate Impact Research, Telegrafenberg, 14412 Potsdam, Germany
2
Advanced Centre for Research in High Energy Materials (ACRHEM),
University of Hyderabad, Central University PO, Gachi Bowli, Hyderabad - 500 046, India
3
School of Physics, University of Hyderabad, Central University PO, Gachi Bowli, Hyderabad - 500 046, India
Corresponding authors: janaki05@gmail.com jbsp@uohyd.ernet.in
Received:
4
June
2009
Revised:
22
November
2009
Published online:
9
March
2010
We present here some studies on noise-induced order and synchronous firing in a system of bidirectionally coupled generic type-I neurons. We find that transitions from unsynchronized to completely synchronized states occur beyond a critical value of noise strength that has a clear functional dependence on neuronal coupling strength and input values. For an inhibitory-excitatory (IE) synaptic coupling, the approach to a partially synchronized state is shown to vary qualitatively depending on whether the input is less or more than a critical value. We find that introduction of noise can cause a delay in the bifurcation of the firing pattern of the excitatory neuron for IE coupling.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2010