Firing Mode Research Articles

Diffusive field coupling-induced synchronization between neural circuits under energy balance

When charged bodies come up close to each other, the field energy is diffused and their states are regulated under bidirectional field coupling. For biological neurons, the diversity in intrinsic electric and magnetic field energy can create synaptic connection for fast energy balance and synaptic current is passed across the synapse channel; as a result, energy is pumped and exchanged to induce synchronous firing modes. In this paper, a capacitor is used to connect two neural circuits and energy propagation is activated along the coupling channel. The intrinsic field energy in the two neural circuits is exchanged and the coupling intensity is controlled adaptively using the Heaviside function. Some field energy is saved in the coupling channel and is then sent back to the coupled neural circuits to reach energy balance. Therefore the circuits can reach possible energy balance and complete synchronization. It is possible that the diffusive energy of the coupled neurons inspires the synaptic connections to grow stronger for possible energy balance.

FIRE RESISTANCE DESIGN ANALYSIS FOR STEEL CONNECTIONS USING SPECIALIZED 3D MODELING SOFTWARE

The work presents the design process, analysis and practical evaluation of nodal connections of the beam-column frame of a low-rise building in the BIM design environment for the action of active loads and emergency temperature effects of fire. A study of the use of design tools was conducted. The conduct of such studies is due to the need to increase the reliability of the steel frame in fire conditions and to update the requirements of the normative documents of the Eurocodes regardingthe fire resistance of metal structures. The standard fire mode was considered, the heating parameters ofelements connected in nodes were analyzed. A review of the theoretical foundations of the calculation of steel structures for the high-temperature effect of the working environment showed the feasibility of applying a simplified method of calculation and determination of heating parameters accordingto normative data.Simulated rod diagram of the frame with loads. An analysis of the stress-strain behavior (SSB) ofthe elements under the action of the emergency combination was carried out. 3D modeling of thenode was used for further calculation. The BIM concept is implemented by integrating Robot StructuralAnalysis PC with the IdeaStatica calculation complex. It has been established that the connection ofPC Robot Structural Analysis with the IdeaStatica calculation complex is rational for the design andcalculations of buildings and structures in 3D space and allows using the results of the temperature effect calculation to adjust the structural solution in order to reduce its metal consumption, labor costsand rationalize the reserves of bearing capacity.The presented process of designing frame nodes summarizes approaches to the development of effective structural forms. The use of information models simplified design, optimized work processes, and also made it possible to increase the complexity of nodes both at the level of the designsolution and at the level of the calculation model, taking into account the nonlinear effects of temperature influence.

Correction to: PCNN double step firing mode for image edge detection

Correction to: PCNN double step firing mode for image edge detection

The role of the locus coeruleus in shaping adaptive cortical melodies.

Neural dynamics are shaped and constrained by the projections of a small nucleus in the pons: the noradrenergic locus coeruleus (LC). Much like a bow to the brain's violin, activity in the LC lacks content specificity, but instead dynamically shapes the excitability and receptivity of neurons across the brain. In this review, we explain how the style of the bowing technique, which is analogous to different firing modes in the LC, affects distinct activity patterns in the rest of the brain. Through this analogical lens, we provide intuitive insights into how the complex activity of the LC acts to coordinate adaptive neural dynamics.

Synchronization, extreme multistability, and its control for a field coupled neurons with time delays

Neurons are connected through synapses, but it is not reasonable to equate the connection mode of synapses to an edge in the network due to synaptic plasticity whereas the magnetic field coupling can be considered to handle it. Therefore, in this paper, the interaction between HR neurons is realized by magnetic field coupling based on induction coil, and time delay is introduced to represent the lag in information transfer. First, the coexisting firing activities and synchronization behaviors in dual neuronal networks are numerically calculated, respectively, depending on the external stimulation current, coupling strength, time delays, and initial conditions. When the time delays are given, it is interesting to note that the infinite number of firing modes including chaotic firing, periodical firing, and quiescent state is induced by initial conditions. Due to the initial values, the types of synchronization consisting of complete synchronization, delayed synchronization, and asynchronization are then revealed under the framework of extreme multistability. In particular, the state of complete synchronization exhibits only quiescent state and period-1 firing when the time delay is not equal to 0. Furthermore, the linear augmentation method is conceived to control extreme multistability. It can be found that the attractors with different positions and topological structures can be controlled to the point attractors with the same shape but with different positions when the coupling strength of linear system and nonlinear system is increased. That is, the heterogeneous multistability can be successfully controlled to the homogeneous multistability, and the coupled neurons can also be achieved synchronization after control. These conclusions in this paper could be helpful in providing new insights for studying neurodynamics and applying neural circuits.

Epilepsy dynamics of an astrocyte-neuron model with ammonia intoxication

Experimental records in the cerebral cortex indicate that ammonia injection can lead to seizures. Considering that astrocytes play a vital role in mediating the uptake and absorption of ammonium ions in the extracellular space of the cortical circuit, we constructed a new astrocyte neuron coupling model, which is composed of a neuron and its astrocytes connected through the extracellular space, taking into account of the influence of extracellular ammonium ions. The numerical results verified the previous experimental observation that obtained epileptic firing modes of neurons and postsynaptic GABA reversal potential depolarization triggered by ammonia injection. In addition, we also determined the concentration–response relationship between the ammonium ion concentration and the time of entering epilepsy and predicted the threshold of the ammonium ion concentration for the onset of epilepsy.

Taming the hybrid synapse under energy balance between neurons

Biological neurons can present a variety of firing modes and adaptive regulation in the synapses is effective to encode information and propagate electric signals to other neurons. From a dynamical viewpoint, neurons and even chaotic oscillators can be regulated to reach synchronization by setting appropriate coupling intensities. From the physical aspect, these nonlinear oscillators are controlled to reach energy balance accompanied by synchronization. A quiescent neuron still contains static electric field energy and the occurrence of firing patterns (spiking, bursting, and even chaotic mode) can activate magnetic field energy because of the propagation of intracellular Calcium, sodium, potassium in neurons and channel currents. Gap junction coupling accounts for the transient electric coupling between neurons, and the chemical synapse coupling results from the magnetic field coupling when the neurotransmitter is released from the presynaptic terminal to the postsynaptic terminal. In the same functional region, the synaptic coupling intensity could be time-varying and thus neurons can be switched from different synchronous states. In this work, a hybrid synapse composed of resistor and induction coil is used to control the synchronous firing modes in neurons, which are developed from a simple neural circuit composed of one capacitor, induction coil, nonlinear resistor, external voltage source, and the coupling gain in the hybrid synapse is dependent on the energy diversity between two neurons. An adaptive law is suggested to adjust the field coupling intensity and it is confirmed that two neurons are synchronized complete until they are kept energy balanced. These results provide possible guidance to know the growth and creation mechanism for synaptic connections to neurons.

Controlling the spontaneous firing behavior of a neuron with astrocyte.

Mounting evidence in recent years suggests that astrocytes, a sub-type of glial cells, not only serve metabolic and structural support for neurons and synapses but also play critical roles in the regulation of proper functioning of the nervous system. In this work, we investigate the effect of astrocytes on the spontaneous firing activity of a neuron through a combined model that includes a neuron-astrocyte pair. First, we show that an astrocyte may provide a kind of multistability in neuron dynamics by inducing different firing modes such as random and bursty spiking. Then, we identify the underlying mechanism of this behavior and search for the astrocytic factors that may have regulatory roles in different firing regimes. More specifically, we explore how an astrocyte can participate in the occurrence and control of spontaneous irregular spiking activity of a neuron in random spiking mode. Additionally, we systematically investigate the bursty firing regime dynamics of the neuron under the variation of biophysical facts related to the intracellular environment of the astrocyte. It is found that an astrocyte coupled to a neuron can provide a control mechanism for both spontaneous firing irregularity and burst firing statistics, i.e., burst regularity and size.

Deletion of Phospholipase C β1 in the Thalamic Reticular Nucleus Induces Absence Seizures.

Absence seizures are caused by abnormal synchronized oscillations in the thalamocortical (TC) circuit, which result in widespread spike-and-wave discharges (SWDs) on electroencephalography (EEG) as well as impairment of consciousness. Thalamic reticular nucleus (TRN) and TC neurons are known to interact dynamically to generate TC circuitry oscillations during SWDs. Clinical studies have suggested the association of Plcβ1 with early-onset epilepsy, including absence seizures. However, the brain regions and circuit mechanisms related to the generation of absence seizures with Plcβ1 deficiency are unknown. In this study, we found that loss of Plcβ1 in mice caused spontaneous complex-type seizures, including convulsive and absence seizures. Importantly, TRN-specific deletion of Plcβ1 led to the development of only spontaneous SWDs, and no other types of seizures were observed. Ex vivo slice patch recording demonstrated that the number of spikes, an intrinsic TRN neuronal property, was significantly reduced in both tonic and burst firing modes in the absence of Plcβ1. We conclude that the loss of Plcβ1 in the TRN leads to decreased excitability and impairs normal inhibitory neuronal function, thereby disrupting feedforward inhibition of the TC circuitry, which is sufficient to cause hypersynchrony of the TC system and eventually leads to spontaneous absence seizures. Our study not only provides a novel mechanism for the induction of SWDs in Plcβ1-deficient patients but also offers guidance for the development of diagnostic and therapeutic tools for absence epilepsy.

A Study on the Influence of Rail Top Smoke Exhaust and Tunnel Smoke Exhaust on Subway Fire Smoke Control

The special emergency plan for subway fires in China stipulates that when a fire occurs at a train stop, it is necessary to confirm whether the fire mode of the tunnel ventilation system is implemented. Because of the setting mode of tunnel ventilation and smoke exhaust in the station track area, the smoke exhaust at the rail top and tunnel cannot operate at the same time. To study the influence of rail top smoke exhaust and tunnel smoke exhaust on subway fire smoke control when a train stops at a station, we take an island station as an example. A 1:1 full-scale numerical model is established to study the smoke spread area, temperature field distribution, and carbon monoxide concentration. The results show that when a train fire occurs in a subway station, the rail top smoke exhaust mode has the best smoke exhaust effect compared with the other three smoke exhaust modes. In this mode, the smoke diffusion in the carriage is the slowest and the available escape time of personnel is the longest. Therefore, it is recommended to adopt the rail top smoke exhaust mode in case of train fire in the subway station; that is, open the smoke exhaust outlet on the rail top for smoke exhaust, and organize personnel to evacuate to the safe position of the platform through the connecting channel and escape exit. If conditions permit, local small fans can also be added to meet the requirements of smoke exhaust. The research results can provide guidance for the emergency plan and provide strong support for promoting the improvement of the fire emergency plan.

Factors influencing the fire dynamics in open-plan compartments with an exposed timber ceiling

Fires in open plan compartments have been the subject of much research over the past decade. This article presents results from an experimental study conducted to explore factors that influence fire dynamics in open-plan compartments with an exposed timber ceiling.A reduced scale testing methodology is proposed and supported by contrasting observed fire behaviour at small scale with large-scale experiments reported in the literature. The reduced-scale experiments highlight the complexity of the fire dynamics. Factors which govern the behaviour include the ignition and self-extinction of the timber; the role that the timber plays in accelerating the transition from Mode 3 (travelling) to Mode 1 (fully developed) behaviour; the ignition and self-extinction of timber which is in a downward facing orientation; the thermal inertia of the ceiling material.Results demonstrate that: different fire modes observed in large scale compartments occur in large scale compartments with combustible timber ceilings; ceiling intrusions influence the fire; and factors that influence the response of timber in open plan compartment fires can, to a large extent, be explained by existing knowledge extracted from bench scale testing and compartment fires with non-combustible linings.

Tonic serotonergic input increases the burst firing mode and diminishes the firing rate of reticular thalamic nucleus neurons through 5-HT1A receptors activation in anesthetized rats.

The reticular thalamic nucleus (RTn) is a thin shell of GABAergic neurons that covers the dorsal thalamus that regulate the global activity of all thalamic nuclei. RTn controls the flow of information between thalamus and cerebral cortex since it receives glutamatergic information from collaterals of thalamo-cortical (TCs) and cortico-thalamic neurons. It also receives aminergic information from several brain stem nuclei, including serotonergic fibers originated in the dorsal raphe nucleus. RTn neurons express serotonergic receptors including the 5-HT1A subtype, however, the role of this receptor in the RTn electrical activity has been scarcely analyzed. In this work, we recorded in vivo the unitary spontaneous electrical activity of RTn neurons in anesthetized rats; our study aimed to obtain information about the effects of 5-HT1A receptors in RTn neurons. Local application of fluoxetine (a serotonin reuptake inhibitor) increases burst firing index accompanied by a decrease in the basal spiking rate. Local application of different doses of serotonin and 8-OH-DPAT (a specific 5-HT1A receptor agonist) causes a similar response to fluoxetine effects. Local 5-HT1A receptors blockade produces opposite effects and suppresses the effect by 8-OH-DPAT. Our findings indicate the presence of a serotonergic tonic discharge in the RTn that increases the burst firing index and simultaneously decreases the basal spiking frequency through 5-HT1A receptors activation.

Experimental Evaluation of Fire Resistance Limits for Steel Constructions with Fire-Retardant Coatings at Various Fire Conditions

The experimental evaluation of fire resistance limits for steel constructions with fire-retardant coatings consists of a lot of experiments on the heating of steel structures of buildings by solving a heat engineering problem at various fire conditions. Building design implies the assessment of compliance of actual fire resistance limits for steel constructions with the required limits. Fire resistance limits for steel constructions are determined for “standard” temperature mode, and this can lead to overestimated fire resistance and underestimated heat influence for a real fire. Estimation of the convergence for “standard” temperature mode and possible “real” fire mode, as well as of the compliance of actual fire resistance limits with real fire conditions, was realized in the following stages: mathematical modeling of real fire development by the field model in software package Fire Dynamics Simulation (FDS) with various fire loads and mathematical modeling of steel construction heating for the standard temperature mode obtained by modeling “real” fire modes (the finite difference method of solving the Fourier heat conduction equation at external and internal nonlinearities was used for modeling the process of steel structure heating with the implementation in the ANSYS mechanical software package). Experiments of the assessment of fire-protective paint’s effectiveness were carried out for standard temperature mode and obtained by modeling “real” fire modes. The equivalent fire duration dependence on fire load type was determined. This dependence can be taken into account in determination of fire resistance limits for steel constructions in warehouse building roofing. Fire-protective paint effectiveness was estimated for “standard” temperature mode and various other temperature modes.

Оценка пожарного риска в технологическом оборудовании с электрическими нагревателями

An important role in the field of fire prevention of the electrical installations, including electrical heating equipment, is played by the research and development of the risk-based engineering methods for assessing fire safety of the objects. It is also important to find economically sound ways to ensure it. Widespread use of the electrical heating equipment in the technological processes and a significant number of fires from heaters require a fire risk assessment considering power supply and technological process control systems. Current requirements for determining fire risk of the electrical heating equipment are not effective enough. According to the statistics, the electric heaters occupy one of the first places among the electrical equipment as a cause of fires. The article describes a methodology for assessing the probability of fire hazard modes during the operation of electrical heating equipment. Events that contribute to the occurrence of a fire are considered. The most characteristic factors that cause the ignition of electrical elements of the electric heating equipment system are listed. A tree of events leading to the fire occurrence in such systems is presented. Specific features are noted concerning thermal processes in the electrical part of the equipment associated with the possibility of ignition in the electrical elements. Analytical expressions for determining the probability of fire and its components are given. Calculation is based on the reliability indicators of the system and devices elements for protective shutdown of the circuits with fire hazardous modes. The possibility is shown related to practical application of the above methodology for assessing fire risk in the equipment with electric heaters. This methodology also allows to justify the need or sufficiency of fire-fighting technical solutions.

Pupillometry and the vigilance decrement: Task-evoked but not baseline pupil measures reflect declining performance in visual vigilance tasks.

Baseline and task‐evoked pupil measures are known to reflect the activity of the nervous system's central arousal mechanisms. With the increasing availability, affordability and flexibility of video‐based eye tracking hardware, these measures may one day find practical application in real‐time biobehavioural monitoring systems to assess performance or fitness for duty in tasks requiring vigilant attention. But real‐world vigilance tasks are predominantly visual in their nature and most research in this area has taken place in the auditory domain. Here, we explore the relationship between pupil size—both baseline and task‐evoked—and behavioural performance measures in two novel vigilance tasks requiring visual target detection: (1) a traditional vigilance task involving prolonged, continuous and uninterrupted performance (n = 28) and (2) a psychomotor vigilance task (n = 25). In both tasks, behavioural performance and task‐evoked pupil responses declined as time spent on task increased, corroborating previous reports in the literature of a vigilance decrement with a corresponding reduction in task‐evoked pupil measures. Also in line with previous findings, baseline pupil size did not show a consistent relationship with performance measures. Our data offer novel insights into the complex interplay of brain systems involved in vigilant attention and question the validity of the assumption that baseline (prestimulus) pupil size and task‐evoked (poststimulus) pupil measures reflect the tonic and phasic firing modes of the locus coeruleus.

Experiments and simulations on factors affecting the stereoscopic fire flooding in heavy oil reservoirs

In-situ combustion (ISC) or fire flooding (FF) technology had been widely applicated in developing heavy oil reservoirs. Due to the complex physical and chemical processes, it is not easy to guarantee the high oil recovery. For thin layer reservoirs, vertical well mode of FF can achieve good results, but for thick layer reservoirs, the vertical producing degree of FF under vertical well pattern is low. Therefore, it is necessary to deepen the basic understanding of fire flooding under different well patterns and study the influencing factors for thick heavy oil reservoir. Stereoscopic fire flooding (SFF) mode is proposed in this paper, and the one-dimensional combustion tube and differential scanning calorimetry (DSC) experiments were introduced and designed. The heavy oil samples of G block in Liaohe oilfield in China were studied and the oxidation kinetic parameters were obtained by experiments. The applicability of oil samples for fire flooding was tested. The different fire flooding modes was compared and the influencing factors of SFF were analyzed through simulations. The results indicated that the temperature of high temperature oxidation (HTO) was above 450 °C. The CO2 content of the produced gas was more than 13% and the apparent HC atomic ratio was 1.28. DSC experiments showed the activation energy of HTO stage was 1.40 × 105 J/mol. The results indicated that the heavy oil samples can reach a high temperature combustion state. The SFF mode was simulated by CMG-STARS module based on the experimental results. The simulation results showed that SFF had better performance than FF of only vertical wells in oil recovery. The important factors of SFF, such as gas-injection rate, reservoir thickness, transverse permeability, vertical permeability, crude oil viscosity, formation dip angle and relative position of horizontal wells and the applicable conditions of SFF mode were analyzed and the optimum condition for SFF mode for each influencing factor was analyzed, and the conclusions were obtained.

DEVELOPMENT OF RESOURCE-SAVING TECHNOLOGY OF POROUS-HOLLOW CERAMIC STONES

A resource-saving technology of porous ceramic materials using low-quality non-sintering sandy loam as a basic raw material has been developed. Based on the analysis of the plastic properties of two- and three-component ceramic masses, including sandy loam, expanded clay and fuel slag in various ratios, it was found that the required level of their plasticity provides the content of the main raw material in the following range (wt%): fuel slag – 15 – 20; sandy loam – 50 – 65; expanded clay – 20 – 30. By the method of planning the experiment, the rational composition of the three-component ceramic mass was substantiated. This which contains: 62.5 wt. % sandy loam, 20 wt. % medium-sintering plastic clay as a plasticizer and 17.5 wt. % fuel slag of TPP as a porous agent. For the developed mass, the main technological properties were investigated, which made it possible to recommend the drying mode of the raw material – 60 hours, the optimal firing temperature – 950 °С. Such conditions ensure that samples are obtained without drying cracks and signs of deformation. Оn the results of dilatometric analysis of mass the rational mode of firing high-hollow semifinished products was designed. The firing mode provides for a 44-hour firing and a decrease in the heating rates in the areas of dehydration of clay minerals, direct quartz transition and intensive sintering of the mass, as well as a decrease in the cooling rate in the area of the reverse quartz transition. The proposed firing mode provides the degree of sintering and their properties necessary for ceramic materials. Based on the developed mass under the recommended drying and firing modes, porous ceramic materials with an apparent density of 1.48 g/cm3, a compressive strength of 18.2 MPa and frost resistance of 30 cycles were obtained. The developed materials belong to the group of conditionally effective, and if 50% of the voids are organized, they can be classified as effective.

STUDY OF THE INFLUENCE OF CALCIUM OXIDES IN LIGHT-FUSION RAW MATERIALS ON THE PROPERTIES OF A CERAMIC PRODUCT

One of the main problems of modern building ceramics based on low-melting raw materials is the increased CaO content in the charge. This deviation from the normative values of the technological parameters of production leads to defects - underburning / overburning, quirks, looseness, low strength. Firing mode, molding parameters, addition of additives, preparation of raw materials are the factors for solving this problem. The Alekseevsk low-melting clay and the Yarmysh (Uzbekistan) loess-like loam were investigated, the destruction of the sample structure upon absorption of moisture from the CaO air was graphically modeled, the diagrams of the dependence of the fi ring temperature on the compressive strength were plott ed, the infl uence of molding and the fi neness of grinding of raw materials on the compressive strength and the nature of the formation of ceramic defects was derived.

A Study on Transportation Functions of Disaster-Prevention Road for Post-Earthquake Building Collapse

<p>由災害案例顯示，在大規模地震下常會造成地表破壞、建物倒塌、維生管線毀壞、與道路阻斷狀況，例如1994年洛杉磯北嶺ML6.6地震、1995年日本阪神ML7.2地震、及1999年台灣921集集ML7.3地震，皆造成嚴重的建築物倒塌外，也間接引起周邊道路阻斷的情況，不僅衝擊都市機能運作外，亦導致鏈鎖性衝擊影響，災害後果顯示，地方政府需考量間接災難衝擊影響，例如震後建物倒塌引起的道路阻斷，與建物火災事件將加劇衝擊之後果，傷亡與經濟損失將高將於地震直接損失，有鑑於此，本研究藉災害衝擊鏈觀點，發展震後建物倒塌引致的道路阻斷評估模式，並利用地震情境模擬分析(中洲構造ML6.9)，有效整合震後建物起火數推估模式，發展出一套建物倒塌地震情境模擬分析程序。研究結果顯示，台南市示範區內強震區建物嚴重損壞，建物結構殘礫落下引起道路嚴重阻斷情況，尤其發生在台南市中西區老舊建物的鄰近道路，與醫療院所外部救援道路，此外震後造成建物倒塌發生三處火災事件，火災救援與傷患運輸等可能受到影響，對災害管理，強化都市防災機能，檢討防救災道路及防救災公共設施，防災應變能力，是刻不容緩之事，本研究結果可具體掌握震後道路系統阻斷情況，可協助防救災設施的情資研判，做出合理且有效決策，及面對災害防救避難規劃之參考。</p> <p> </p><p>Moderate-to-large earthquakes cause problems such as severe damage to buildings, critical infrastructure failure, and road blockages. For example, during the 1994 Northridge earthquake (ML6.6), 1995 Kobe earthquake (ML7.2), and 1999 Chi-Chi earthquake (ML7.3), strong ground motion caused the collapse of buildings and indirectly resulted in road blockages, which not only negatively affected the operation of urban functions but also triggered failures in related and connected systems, effectively amounting to a disaster cascade. Road networks are crucial in an emergency, such as the aftermath of a strong earthquake, at which time rescued people must be immediately transported to rescue staging sites, injured people must be taken to hospitals, assistance must be transported to the scene, and repair work must be conducted on damaged infrastructure. With rapid urbanization, Taiwan is becoming increasingly dependent on its transportation infrastructure. Governments must consider the disaster impact chain to reduce the harmful consequences of disasters. For instance, post-earthquake casualties and the socioeconomic impacts of fire events generally have a greater negative impact than do the losses directly caused by earthquakes. The current study developed a disaster impact chain triggered by the collapse of buildings after an earthquake. We integrated the road blocking mode and post-earthquake fire mode and developed a set of procedures and methods. The results of this research can be used as a basis for determining the damage to road systems after earthquakes, guiding the operation of disaster prevention and relief facilities, informing reasonable and effective decision-making during disasters, and serving as a reference for the government facility inspection and priority restoration work.</p> <p> </p>

Pattern selection in thermosensitive neuron network induced by noise

It is well known that the firing modes of biological neurons are sensitive to slight temperature changes in their environments. In this paper, a type of noise, which is dependent on temperature changes, is introduced to describe the effect of varying external environments. The effect of this type of noise on the mode transition of the collective dynamical behaviors of coupled thermosensitive neurons in a regular network is investigated. In the simulation, noise is imposed on the network in two ways: on the center area and on the boundary of the network. The results show that the target waves could be induced with noise being imposed on the center area of the network, and traveling waves could be generated with noise imposed on the boundary region of the network. All these results verify that noise could regulate the modes’ transitions of the collective electrical activities in the network, transforming them from synchronization to another ordered collective dynamics type (target wave or traveling wave). Furthermore, the synchronization factors for two cases are calculated, and the results confirm that noise could make network become from high order to low order, but it cannot transform it from low to high order.