Direct or Indirect? Graphical Models for Neural Oscillators

Up to now, time series analysis techniques like synchronization analysis or coherence analysis are mostly applied to bivariate data sets. If more than two signals are available, investigations based on pairwise combinations are still the most favored procedure. However, multivariate data contain more information than those inferable from multiple bivariate examinations. Direct as well as indirect influences may lead to significant inter-relations between signals. A methodology that is able to distinguish between spurious and non-spurious influences will yield deeper insights into underlying physiology. Furthermo…