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arXiv 2206.10000q-bio.NC
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自调谐临界性:通过时间相关性控制神经元接近其分叉点

Self Tuned Criticality: Controlling a neuron near its bifurcation point via temporal correlations

Juliane T. Moraes, Eyisto J. Aguilar Trejo, Sabrina Camargo, Silvio C. Ferreira, Dante R. Chialvo

摘要:

以前的工作表明,大型神经网络的集体活动可以通过反馈控制保持在临界点附近,最大化平均场波动的时间相关性。由于这种相关性在非线性动力系统的不稳定性附近表现得类似,因此预计该原理也应该控制低维动力系统,该系统表现出从不动点到极限环的连续或不连续分叉。在这里,我们提出的数值证据表明,一个单一的神经元的动力学可以控制在其分叉点附近。该方法在两个模型中进行了测试:一个2D通用兴奋地图和范式FitzHugh-Nagumo神经元模型。结果表明,在这两种情况下,系统都可以通过自相关函数的第一阶系数来调整控制参数,使系统自调谐到分岔点。

英文摘要:

Previous work showed that the collective activity of large neuronal networks can be tamed to remain near its critical point by a feedback control that maximizes the temporal correlations of the mean-field fluctuations. Since such correlations behave similarly near instabilities across nonlinear dynamical systems, it is expected that the principle should control also low dimensional dynamical systems exhibiting continuous or discontinuous bifurcations from fixed points to limit cycles. Here we present numerical evidence that the dynamics of a single neuron can be controlled in the vicinity of its bifurcation point. The approach is tested in two models: a 2D generic excitable map and the paradigmatic FitzHugh-Nagumo neuron model. The results show that in both cases, the system can be self-tuned to its bifurcation point by modifying the control parameter according to the first coefficient of the autocorrelation function.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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