Abstract
We show that it is possible for chaotic systems to display the main features of stochastic and coherence resonance. In particular, using the mapped clock oscillators (MCO) which emulate the transmembrane voltage activities in excitable cells, operating in a chaotic regime and in the presence of noise, can exhibit coherence resonance and stochastic resonance. Certain firing frequencies become more regular for some optimal values of noise intensity. The effect of noise in different coupling pathways using the MCO model of neuronal dynamic is investigated. We found that the effect of coherence resonance and stochastic resonance are more prominent if noise is presented in the pathways for field coupling or gap junction coupling. This leads to the speculation that stochastic resonance could enhance the intrinsic 4-8Hz rhythms in CAS neurons.
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