The columnar organization is a ubiquitous feature in the cerebral cortex.In this study,a neural network model simulating the cortical columns has been constructed.When fed with random pulse input with constant rate,a ...The columnar organization is a ubiquitous feature in the cerebral cortex.In this study,a neural network model simulating the cortical columns has been constructed.When fed with random pulse input with constant rate,a column generates synchronized oscillations,with a frequency varying from 3 to 43 Hz depending on parameter values.The behavior of the model under periodic stimulation was studied and the input-output relationship was non-linear.When identical columns were sparsely interconnected,the column oscillator could be locked in synchrony.In a network composed of heterogeneous columns,the columns were organized by intrinsic properties and formed partially synchronized assemblies.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.39893340-06,30170231 and 62075023)Brain-Mind Research Center in the Chinese Academy of Sciences.
文摘The columnar organization is a ubiquitous feature in the cerebral cortex.In this study,a neural network model simulating the cortical columns has been constructed.When fed with random pulse input with constant rate,a column generates synchronized oscillations,with a frequency varying from 3 to 43 Hz depending on parameter values.The behavior of the model under periodic stimulation was studied and the input-output relationship was non-linear.When identical columns were sparsely interconnected,the column oscillator could be locked in synchrony.In a network composed of heterogeneous columns,the columns were organized by intrinsic properties and formed partially synchronized assemblies.
