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. 2007 Oct 16;2(1):29–38. doi: 10.1007/s11571-007-9030-0

Fig. 1.

Fig. 1

Hindmarsh–Rose neuron model with Iext = 3.25. The time series of the x-component (solid line) and the z-component (dotted line) are plotted in the top graph. The axes are in arbitrary units. The bottom graph shows the phase portrait