Taming desynchronized bursting with delays in the Macaque cortical network  

作　　者：王青云 Murks Aleksandra Perc Matjaz 陆启韶 

机构地区：[1]Department of Dynamics and Control,Beihang University [2]Department of Physics,Faculty of Natural Sciences and Mathematics,University of Maribor

出　　处：《Chinese Physics B》2011年第4期117-122,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 10972001,10702023 and 10832006);Matjaz Perc individually acknowledges support from the Slovenian Research Agency (Grant No. Z1-2032)

摘　　要：Inhibitory coupled bursting Hindmarsh-Rose neurons are considered as constitutive units of the Macaque corti- cal network. In the absence of information transmission delay the bursting activity is desynchronized, giving rise to spatiotemporally disordered dynamics. This paper shows that the introduction of finite delays can lead to the synchro- nization of bursting and thus to the emergence of coherent propagating fronts of excitation in the space-time domain. Moreover, it shows that the type of synchronous bursting is uniquely determined by the delay length, with the transi- tions from one type to the other occurring in a step-like manner depending on the delay. Interestingly, as the delay is tuned close to the transition points, the synchronization deteriorates, which implies the coexistence of different bursting attractors. These phenomena can be observed by different but fixed coupling strengths, thus indicating a new role for information transmission delays in realistic neuronal networks.Inhibitory coupled bursting Hindmarsh-Rose neurons are considered as constitutive units of the Macaque corti- cal network. In the absence of information transmission delay the bursting activity is desynchronized, giving rise to spatiotemporally disordered dynamics. This paper shows that the introduction of finite delays can lead to the synchro- nization of bursting and thus to the emergence of coherent propagating fronts of excitation in the space-time domain. Moreover, it shows that the type of synchronous bursting is uniquely determined by the delay length, with the transi- tions from one type to the other occurring in a step-like manner depending on the delay. Interestingly, as the delay is tuned close to the transition points, the synchronization deteriorates, which implies the coexistence of different bursting attractors. These phenomena can be observed by different but fixed coupling strengths, thus indicating a new role for information transmission delays in realistic neuronal networks.

关 键 词：synchronization BURSTING information transmission delay Macaque cortical network inhibitory coupling 

分 类 号：Q42[生物学—神经生物学]