Simulation of Code Spectrum and Code Flow of Cultured Neuronal Networks

Figure 4

Integrate-and-fire model without leakage but with fluctuation in the parameters of neuron . Each neuron has an inherent accepting period and output delay time . These parameters vary with time within certain ranges and , respectively. Neuron integrates weighted input spikes during the accepting period for the th firing, and after the refractory period ends, it decides whether the integrated value exceeds zero for firing at every time point. If so, it outputs the th output spike with delay time . That is, , and likewise, .