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    Sun Run-Zhi, Wang Zhi-Zhong, Wang Mao-Sheng, Zhang Ji-Qian
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    • Response characteristics of FitzHugh-Nagumo neurons to low frequency signal have been investigated by numerical simulation. Neurons are arranged on a square-lattice and are subjected to two frequency signals. Results show that, vibrational resonance of the membrane potential can be induced by varying the amplitude of the high-frequency signal, when the control parameter is selected in the excitable region. In addition, the responses of neurons to higher harmonics of low-frequency signal have been studied, and nonlinear vibrational resonances are also found. With the increase of frequency in the low-frequency signal, the response of the system to low-frequency signal can resonate. Thus, the double resonance can occur by changing the frequency in low-frequency signal and the amplitude in high-frequency signal. Moreover, effects of electrical synapses and chemical synapses on vibrational resonance and nonlinear vibrational resonance of the neurons have also been studied. Effect of the number of neurons, which are subjected to two frequency signals in the square-lattice, on the response characteristic of the system is also studied. It is found that the response characteristic of the electrical coupling neurons is quite different from that of chemical coupling neurons.
        • Funds:Project supported by the National Natural Science Foundation of China (Grant No. 21103002), and the Natural Science Fund of Anhui Province, China (Grant No. 1508085MA15).
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      Metrics
      • Abstract views:5921
      • PDF Downloads:382
      • Cited By:0
      Publishing process
      • Received Date:27 November 2014
      • Accepted Date:10 January 2015
      • Published Online:05 June 2015

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