Modeling positive Granger causality and negative phase lag between cortical areas

@article{Matias2014ModelingPG,
  title={Modeling positive Granger causality and negative phase lag between cortical areas},
  author={Fernanda S. Matias and Leonardo L. Gollo and Pedro V. Carelli and Steven L. Bressler and Mauro Copelli and Claudio R. Mirasso},
  journal={NeuroImage},
  year={2014},
  volume={99},
  pages={411-8}
}
Different measures of directional influence have been employed to infer effective connectivity in the brain. When the connectivity between two regions is such that one of them (the sender) strongly influences the other (the receiver), a positive phase lag is often expected. The assumption is that the time difference implicit in the relative phase reflects the transmission time of neuronal activity. However, Brovelli et al. (2004) observed that, in monkeys engaged in processing a cognitive task… CONTINUE READING
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