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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Neurosci Biobehav Rev. 2012 Aug 13;0:76–93. doi: 10.1016/j.neubiorev.2012.07.006

Figure 2. Different measures of interbrain synchronization or causal interactions in fMRI and EEG hyperscanning experiments.

Figure 2

The figure shows different modalities to estimate interbrain correlations from hyperscanning recordings A) Time correlations between different hemodynamic signals (King-Casas et al., 2005) in two groups of subjects in a neuroeconomy game (“investor” on the left, “trustee” on the right). B) Patterns of interbrain coherence during simultaneous music production between two guitarists in an EEG hyperscanning experiment (head seen from above, nose up) (Lindenberger et al., 2009). C) Functional connections estimated between two brains of participants in an EEG hyperscanning experiment involving motor recognition and coordination (Dumas et al., 2010). Statistically significant Partial directed coherence (PDC) correlation in the frequency domains between different brain regions of a group of dyads involved in a Prisoner’s Dilemma EEG hyperscanning task. The arrows indicate the direction of the interaction (Astolfi et al., 2011)