The Relationship Between Synchronization Among Neuronal Populations and Their Mean Activity Levels

摘要

In the past decade the importance of synchronized dynamics in the brain has emerged form both empirical and theoretical perspectives. Fast dy- namic synchronous interactions of an oscillatory or nonoscillatory nature may constitute a form of temporal coding that underlies feature bind- ing and perceptual synthesis. The relationship between synchronization among neuronal populations and the population firing rates addresses two important issues: the distinction between rate coding and synchro- nization coding models of neuronal interactions and the degree to which empirical measurements of population activity, such as those employed by neuroimaging, are sensitive to changes in synchronization.