Neurons and Near-Death Spikes
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Fig. 6 Variations of average firing rate (Hz) of the network with D and G syn a at α = 0.5, beta
waves dominate in the network. b At α = 0.8, for small values of D the beta waves dominate in
the network, but for large D values gamma waves appears (non-chaotic neurons)
Fig. 7 Irregular spiking of a non-interneuron at D = 0.05, G syn = 5.0, α = 0.5, near-death spikes
are also visible (neurons end its firing near t = 500 ms)
3.4 Average Firing Rate with the Chaotic Neurons
in the Network
Here variations of average firing rate with increase in D, G syn and α values are
explored for the system, when all the neurons of the network hold chaotic parameters.
For a particular G syn , with increase in α value, ‘F’ is increased from Delta to Theta
range, at D = 0.5 (Fig. 8). The average firing rate of the network shifted from Beta
to Theta waves (firing decreased) at α = 0.5 (Fig. 9). Here also the average firing
rate is independent of G syn , but it decreases with increase in D. When α is increased
to 0.8, average firing rate is increased, but network dynamics remained the same as
shown in Fig. 9. Then Theta and Alpha waves are visible in the network.