Dynamic Aspects of Neuronal Cooperativity: Fast Stimulus-Locked Modulations of 
Effective Connectivity

Aertsen, AMHJ; Gerstein, GL

doi:10.1007/978-3-642-84301-3_4

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Dynamic Aspects of Neuronal Cooperativity: Fast Stimulus-Locked Modulations of Effective Connectivity

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Aertsen, AMHJ
Former Department Structure and Function of Natural Nerve-Net , Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Aertsen, A., & Gerstein, G. (1991). Dynamic Aspects of Neuronal Cooperativity: Fast Stimulus-Locked Modulations of Effective Connectivity. In J. Krüger (Ed.), Neuronal Cooperativity (pp. 52-67). Berlin, Germany: Springer.

Cite as: https://hdl.handle.net/21.11116/0000-0006-A368-D

Abstract

Cooperativity among neurons is usually measured by cross-correlation of their simultaneously recorded firing activities under some appropriate stimulus condition. The ordinary ‘raw’ correlogram presents a time averaged count of (near) coincident spikes, and in general contains contributions from different origins: stimulus-induced modulations of single neuron firing rates and various types of (possibly nonstationary) interaction between the neurons. Appropriate normalization procedures are therefore essential in order to compare results from different experiments; only after such normalization may we interpret residual correlation as indicative of (possibly stimulus dependent) ‘effective connectivity’ among the neurons.