论文标题
神经元种群中预期和延迟同步之间的相位稳定性
Phase-bistability between anticipated and delayed synchronization in neuronal populations
论文作者
论文摘要
两个动态系统在发件人接收器配置中单向耦合可以与非零相位lag同步。特别是，如果接收器（r）也收到延迟的负自反馈，则系统可以表现出预期的同步（AS），其特征是负相位滞后。最近，如表明在皮质样神经元种群之间发生的，其中自反馈是由抑制突触介导的。在这种生物学上合理的情况下，从通常的延迟同步（DS，带正相滞后）到接收器种群的抑制电导率可以介导的过渡。在这里，我们表明，取决于兴奋性和抑制性突触电导之间的关系，系统还可以在预期和延迟同步之间表现出相位稳定性。此外，我们表明，接收器和突触电导的噪声量可以介导从稳定的相锁定到Bissable机制的过渡，并最终介导相堤（PD）。我们建议，我们的尖峰神经元种群模型可能对研究与BISSable感知相关的皮质区域的相位稳定性可能有用。
Two dynamical systems unidirectionally coupled in a sender-receiver configuration can synchronize with a nonzero phase-lag. In particular, the system can exhibit anticipated synchronization (AS), which is characterized by a negative phase-lag, if the receiver (R) also receives a delayed negative self-feedback. Recently, AS was shown to occur between cortical-like neuronal populations in which the self-feedback is mediated by inhibitory synapses. In this biologically plausible scenario, a transition from the usual delayed synchronization (DS, with positive phase-lag) to AS can be mediated by the inhibitory conductances in the receiver population. Here we show that depending on the relation between excitatory and inhibitory synaptic conductances the system can also exhibit phase-bistability between anticipated and delayed synchronization. Furthermore, we show that the amount of noise at the receiver and the synaptic conductances can mediate the transition from stable phase-locking to a bistable regime and eventually to a phase-drift (PD). We suggest that our spiking neuronal populations model could be potentially useful to study phase-bistability in cortical regions related to bistable perception.
