Chaotic Interspike Intervals with Multipeaked Histogram in Neurons

In our paper, we report the findings that the interspike intervals of the injured dorsal root ganglion neurons have multipeaked histograms and the interspike intervals are chaotic. First, the symbolic analysis method presented in the paper and the nonlinear forecasting method are used to study the dynamic differences between the interspike intervals with a multipeaked histogram generated by chaos and those induced by noise in some neuron models. Then based on the dynamic differences, the interspike intervals recorded in our experiment are analyzed by the nonlinear forecasting and the symbolic analysis method. We obtain that the dynamics of our experimental interspike intervals are greatly different from those of the interspike intervals with a multipeaked histogram induced by noise, while they are similar to the dynamics of this kind of interspike intervals generated by chaos. The results show that the experimental interspike intervals with a multipeaked histogram are chaotic.

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