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Discrete Dynamics in Nature and Society
Volume 2014, Article ID 173894, 8 pages
http://dx.doi.org/10.1155/2014/173894
Research Article

Noise and Synchronization Analysis of the Cold-Receptor Neuronal Network Model

1Institute for Cognitive Neurodynamics, School of Science, East China University of Science and Technology, Shanghai 200237, China
2School of Information Science and Technology, Civil Aviation University of China, Tianjin 300300, China

Received 27 January 2014; Accepted 25 May 2014; Published 15 June 2014

Academic Editor: Wenwu Yu

Copyright © 2014 Ying Du et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper analyzes the dynamics of the cold receptor neural network model. First, it examines noise effects on neuronal stimulus in the model. From ISI plots, it is shown that there are considerable differences between purely deterministic simulations and noisy ones. The ISI-distance is used to measure the noise effects on spike trains quantitatively. It is found that spike trains observed in neural models can be more strongly affected by noise for different temperatures in some aspects; meanwhile, spike train has greater variability with the noise intensity increasing. The synchronization of neuronal network with different connectivity patterns is also studied. It is shown that chaotic and high period patterns are more difficult to get complete synchronization than the situation in single spike and low period patterns. The neuronal network will exhibit various patterns of firing synchronization by varying some key parameters such as the coupling strength. Different types of firing synchronization are diagnosed by a correlation coefficient and the ISI-distance method. The simulations show that the synchronization status of neurons is related to the network connectivity patterns.