Measuring spectrally-resolved information transfer
Fig 3
Algorithm to determine whether information transfer exists from an identified information source scale to an identified target scale. (A) Results from the initial analysis using Algorithm I indicating significant information transfer emanating from one scale (source scale j) and significant information reception at a target scale (target scale r). (B) To test if the information send from the source scale is indeed the information that is received at the target scale do the following: scramble the target at the relevant scale N times and note the values. For each such scrambled target then apply algorithm I for the source, i.e. scramble the relevant source scale K times and note the distribution of the
values. Compute the drop in mTE obtained for the n − th target shuffling with respect to the median
of the distribution of source-and-target shuffled
values,
. (C) Statistically test the original target drop
against the distribution of the
. A significantly larger value of
indicates that information send by the source scale is indeed received by the target scale.