Schöll Eckehard, Hiller Gerald, Hövel Philipp, Dahlem Markus A
Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany.
Philos Trans A Math Phys Eng Sci. 2009 Mar 28;367(1891):1079-96. doi: 10.1098/rsta.2008.0258.
The influence of time delay in systems of two coupled excitable neurons is studied in the framework of the FitzHugh-Nagumo model. A time delay can occur in the coupling between neurons or in a self-feedback loop. The stochastic synchronization of instantaneously coupled neurons under the influence of white noise can be deliberately controlled by local time-delayed feedback. By appropriate choice of the delay time, synchronization can be either enhanced or suppressed. In delay-coupled neurons, antiphase oscillations can be induced for sufficiently large delay and coupling strength. The additional application of time-delayed self-feedback leads to complex scenarios of synchronized in-phase or antiphase oscillations, bursting patterns or amplitude death.
在FitzHugh-Nagumo模型的框架下，研究了两个耦合可兴奋神经元系统中时间延迟的影响。时间延迟可能出现在神经元之间的耦合中或自反馈回路中。在白噪声影响下，瞬时耦合神经元的随机同步可通过局部时间延迟反馈进行有意控制。通过适当选择延迟时间，同步可以增强或抑制。在延迟耦合神经元中，对于足够大的延迟和耦合强度，可以诱导出反相振荡。时间延迟自反馈的额外应用会导致同相或反相振荡同步、爆发模式或振幅死亡等复杂情况。
