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Influence of the Gaussian colored noise and electromagnetic radiation on the propagation of subthreshold signals in feedforward neural networks

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Science China(Technological Sciences) 2021年第4期64卷 847-857页

作者： GE Mengyan WANG GuoWei jia ya Department of Physics Central China Normal UniversityWuhan 430079China

Iterative methods are used to simulate the in vitro feedforward neural networks in physiological *** can be propagated to a minimum of ten ***,the discharge activity of each group will be more *** feedforward neural networks have a wide range of applications in machine learning,and the weight of synapses considerably influences the propagation of weak ***,we investigated the effect of Gaussian colored noise and electromagnetic radiation on the propagation of the subthreshold excitatory postsynaptic current signals in the input layer of the multilayer Izhikevich neural feedforward *** the absence of electromagnetic radiation,the excitatory postsynaptic current signal is stably propagated and amplified in multilayer feedforward neural networks under the optimal Gaussian colored noise strength or correlation time in the output layer of the *** with the case in which there is no electromagnetic radiation,the presence of electromagnetic radiation slightly reduces the propagation of weak ***,the time required to propagate the excitatory postsynaptic current signal to the output layer increases with the increasing feedback *** feedforward neural network considered in this study is a considerably simple *** complex structures,such as backward connection and delayed feedback,can be observed in real biological ***,the next step will be to study more complex neural models with neuron models based on the physiological experimental data and compare them with real biological ***,the study of neural networks can be combined with an experimental study about the auditory nervous system of bats to understand the biological mechanism associated with the auditory system function of bats from two perspectives.

关键词： feedforward neural network colored noise electromagnetic radiation signal propagation

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Influence of Random Potentials on the Current of the Molecular Motor Model

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Chinese Physics Letters 2001年第11期18卷 1431-1434页

作者： jia ya LI jia-rong Department of Physics Huazhong Normal UniversityWuhan 430079 Institute of Particle Physics:Huazhong Normal University Wuhan 430079

The current of the molecular motor model disturbed by random potentials, which involve the dichotomous and Ornstein-Uhlenbeck potentials, is studied using a finite-space correlation function. It is found that: (i) the amplitude and the correlation length of random potentials play opposing roles in the transport of the molecular motor model;(ii) a random potential with small amplitude and large correlation length is very useful in the molecular motor system.

关键词： function. disturbed Molecular

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Can a Correlation Ratchet Operate Under Spatial Symmetry and Temporal Symmetry ?

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Chinese Physics Letters 1998年第5期15卷 315-317页

作者： jia ya LI jia-rong Department of Physics Huazhong Normal UniversityWuhan 430079 Institute of Particle Physics Huazhong Normal UniversityWuhan 430079

The simplest imaginable ratchet system which cantains two noises correlated with each other is *** is found that(1)the correlation between noises can induce transport,even when the ratchet potential is completely symmetric in space and the driving forcing is symmetric in time,and(2)the system can exhibit a current in either direction,and the direction can be controlled by the intensity of the correlation between noises.

关键词： symmetric system intensity

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A Novel Phase Transition Phenomenon in Bistable System

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Chinese Physics Letters 1997年第4期14卷 245-247页

作者： jia ya LI jia-rong CHEN Yi-cheng Institute of Particle Physics Huazhong Normal UniversityWuhan 430070 CCAST(World Laboratory) P.O.Box 8730Beijing 100080 Department of Physics Huazhong Normal UniversityWuhan 430070

A bistable system driven by additive noise and multiplicative noise is studied,when the correlation time of the correlations between two noises is *** is found that the system undergoes a succession of two phase trans... 详细信息

关键词： noise Transition system

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Cooperative Effects of Noise and Coupling on Stochastic Dynamics of a Membrane-Bulk Coupling Model

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Communications in Theoretical Physics 2009年第3期51卷 455-459页

作者： TANG Jun jia ya YI Ming College of Science China University of Mining Technology Xuzhou 221008 China Department of Physics and Institute of Biophysics Huazhong Normal University Wuhan 430079 China

Based on a membrane-bulk coupling cell model proposed by Gomez-Marin et al. [ Phys. Rev. Lett. 98 （2007） 168303], the cooperative effects of noise and coupling on the stochastic dynamical behavior are investigated. For parameters in a certain region, the oscillation can be induced by the cooperative effect of noise and coupling. Whether considering the coupling or not, corresponding coherence resonance phenomena are observed. Furthermore, the effects of two coupling parameters, cell size L and coupling intensity k, on the noise-induced oscillation of membranes are studied. Contrary effects of noise are found in and out of the deterministic oscillatory regions.

关键词： membrane-bulk cell model coupling noise coherence resonance

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Theoretical Study on Drift of Ca^(2+)Spiral Waves Controlled by Electric Field

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Communications in Theoretical Physics 2009年第5期51卷 941-946页

作者： TANG Jun jia ya MA Jun YI Ming Department of Physics and Institute of Biophysics Huazhong Normal University Wuhan 430079 China College of Science China University of Mining and Technology Xuzhou 221008 China Department of Physics Lanzhou University of Technology Lanzhou 730050 China

Based on the Tang-Othmer Ca^2＋ model, the drift behavior of intracellular Ca^2＋ spiral waves under the influence of weak electric field is investigated. Numerical results show that the dependence of drift velocity of the spiral tip on dc electric field is similar to experimental observations in BZ system. When an ac electric field is applied, interesting resonant-drift phenomenon is observed with ω=2ω0. All results can be explained analytically using a proximate method.

关键词： Ca^2+ spiral wave tip drift electric field

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Relationship of PARG with PARP,VEGF and b-FGF in Colorectal Carcinoma

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Chinese Journal of Cancer Research 2009年第2期21卷 135-141页

作者： Ling Lin jia Li ya-lan Wang Xiao Lin Department of Pathology Molecular Medicine and Cancer Research Center Chongqing Medical UniversityChongqing 400016 China

Objective： To investigate the relationship of poly（ADP-ribose）glycohydrolase（PARG） with poly （ADP-ribose） polymerase（PARP）, vascular endothelial growth factor （VEGF） and basic fibroblast growth factor（b-FGF） in colorectal carcinoma（CRC）. Methods： Immunohistochemical analysis was used to detect PARG, PARP, VEGF and b-FGF in human colorectal carcinoma. Flow cytometry was used to detect PARG and PARP in murine CT26 cell line. Gallotannin （GLTN） was served as PARG inhibitor. Results： The individual positive rates of PARG, PARE VEGF and b-FGF were 55.81%（24/43）, 97.67%（42/43）, 79.07%（34/43） and 81.40%（35/43）, respectively, which were significantly higher than those of control group. The positive PARG was correlated to PARP（r=0.3703, P〈0.05） and b-FGF （r=0.4838, P〈0.05）. The positive PARP was correlated to VEGF （r=0.3968, P〈0.05） and b-FGF （r=0.5610, P〈0.05）. Both PARG and PARP were expressed in CT26 cells. The positive staining rates of PARG and PARP in GLTN-treated group were 7.3% and 52.38%, respectively. They were markedly reduced than those of control group （55.41% and 95.28%, P〈0.01, n=10000）. Conclusion： The data suggest that PARG expression probably plays a role for VEGF and b-FGF expression in colorectal carcinoma.

关键词： PARG PARP VEGF b-FGF Colorectal carcinoma

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Energy dependence on modes of electric activities of neuron driven by different external mixed signals under electromagnetic induction

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Science China(Technological Sciences) 2019年第3期62卷 427-440页

作者： LU LuLu jia ya XU Ying GE Mengyan yaNG Lijian ZHAN Xuan Institute of Biophysics and Department of Physics Central China Normal University

Energy supply and release play an important role in individual neuron and neural network. In this paper, the electrical activities and Hamilton energy of neuron are investigated when external mixed signals(i.e., the periodic stimulus current and the periodic electromagnetic field) are imposed on the neuron under the electromagnetic induction. As a result, the Hamilton energy is much dependent on the mode transition, the multiple electric activity modes and the numerical analysis of Hamilton energy are more complicated under various parameters. When the periodic high-low frequency electromagnetic radiation is imposed in neuron, it is found that the electrical activities are more complex, and the changing of energy is obvious. In addition, the response of electrical activity and Hamilton energy is much dependent on the changing of amplitude A, B when the external high-low frequency signal is imposed on the neuron, meanwhile, the energy of bursting state is lower than the one of spiking state. It can be used for investigation about the energy coding in the neuron even the neuron networks.

关键词： Hamilton energy electromagnetic induction electric activity multiple growing modes

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Channel noise-induced phase transition of spiral wave in networks of Hodgkin-Huxley neurons

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Chinese Science Bulletin 2011年第2期56卷 151-157页

作者： MA Jun WU Ying YING HePing jia ya Department of Physics Lanzhou University of Technology Lanzhou 730050 China Department of Physics Huazhong Normal University Wuhan 430079 China School of Science Xi'an University of Technology Xi'an 710048 China Zhejiang Institute of Modern Physics Zhejiang University Hangzhou 310027 China

The phase transition of spiral waves in networks of Hodgkin-Huxley neurons induced by channel noise is investigated in *** neurons in the networks are coupled with small-world connections,and the results are compared with the case for regular networks,in which all neurons are completely coupled with nearest-neighbor connections.A statistical variable is defined to study the collective behavior and phase transition of the spiral wave due to the channel noise and topology of the *** effect of small-world connection networks is described by local regular networks and long-range connection with certain probability *** numerical results confirm that (1) a stable rotating spiral wave can be developed and maintain robust with low p,where the breakup of the spiral wave and turbulence result from increasing the probability p to a certain threshold;(2) appropriate intensity of the optimized channel noise can develop a spiral wave among turbulent states in small-world connection networks of H-H neurons;and (3) regular connection networks are more robust to channel noise than small-world connection networks.A spiral wave in a small-world network encounters instability more easily as the membrane temperature is increased to a certain high threshold.

关键词：神经元网络信道噪声螺旋波赫胥黎小世界网络连接网络金耦合连接

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Fermi-Decay Law of Bose-Einstein Condensate Trapped in an Anharmonic Potential

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Chinese Physics Letters 2012年第4期29卷 19-22页

作者： LIU Yuan jia ya-Fei LI Wei-Dong Institute of Theoretical Physics and Department of Physics Shanxi UniversityTaiyuan 030006

The Fermi-decay law of Bose Einstein condensate,which is trapped by a cigar-shaped anharmonic trap and subjected to a weak random perturbation,is investigated by numerically calculating quantum fidelity (Loschmidt echo),to reveal the coherence loss of the *** find that there are three indispensable factors,anharmonic trap,weak random perturbation and nonlinear interaction,in charging of the Fermi-decay *** anharmonic trap creates anharmonic oscillations,and the weak random perturbation causes coherence loss by disturbing their coherent oscillations,while the nonlinear interaction enhances the loss to the Fermi-decay *** on the Fermi-decay law,some suggestions are presented to prolong the coherent time during coherently manipulating condensates.

关键词： harmonic Fermi coherent

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