Effect of autaptic delay signal on spike-timing precision of single neuron
Xuan Ma(马璇)1, Yaya Zhao(赵鸭鸭)1, Yafeng Wang(王亚峰)2, Yueling Chen(陈月玲)3, and Hengtong Wang(王恒通)1,†
1 School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China; 2 School of Physics and Information Technology, Baoji University, Baoji 710062, China; 3 College of Information Engineering, Gansu University of Chinese Medicine, Lanzhou 730000, China
Abstract Experimental and theoretical studies have reported that the precise firing of neurons is crucial for sensory representation. Autapse serves as a special synapse connecting neuron and itself, which has also been found to improve the accuracy of neuronal response. In current work, the effect of autaptic delay signal on the spike-timing precision is investigated on a single autaptic Hodgkin-Huxley neuron in the present of noise. The simulation results show that both excitatory and inhibitory autaptic signals can effectively adjust the precise spike time of neurons with noise by choosing the appropriate coupling strength g and time delay of autaptic signal τ. The g-τ parameter space is divided into two regions: one is the region where the spike-timing precision is effectively regulated; the other is the region where the neuronal firing is almost not regulated. For the excitatory and inhibitory autapse, the range of parameters causing the accuracy of neuronal firing is different. Moreover, it is also found that the mechanisms of the spike-timing precision regulation are different for the two kinds of autaptic signals.
Fund: Project supported by the Fundamental Research Funds for the Central Universities, China (Grant No. GK201903020), the National Natural Science Foundation of China (Grant No. 12005006), and Scientific research project of Education Department of Gansu Province, China (Grant No. 2016A-049).
Corresponding Authors:
Hengtong Wang
E-mail: wanghengtong@snnu.edu.cn
Cite this article:
Xuan Ma(马璇), Yaya Zhao(赵鸭鸭), Yafeng Wang(王亚峰), Yueling Chen(陈月玲), and Hengtong Wang(王恒通) Effect of autaptic delay signal on spike-timing precision of single neuron 2023 Chin. Phys. B 32 038703
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