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. Author manuscript; available in PMC: 2017 Jan 31.
Published in final edited form as: Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Aug 26;72(2 Pt 1):021911. doi: 10.1103/PhysRevE.72.021911

FIG. 1.

FIG. 1

The spontaneous dynamics of model A, with voltage and threshold as functions of time. Shown are the voltage v(t) (solid line), which rises linearly with slope μ, as well as the threshold θ(t) (dashed line) for s(t)=0. When v(t)=θ(t), a spike is generated, and the voltage is decremented by θ0 while the threshold is reset to a uniform random value in the interval (θ0−D, θ0+D). Also shown are the ISIs Ij and Ij+1; note that Ij can be divided into the subintervals Uj and Vj such that Ij=Uj+Vj.