13. May 2020 : New review paper on hyperscanning research:

Czeszumski A, Eustergerling S, Lang A, Menrath D, Gerstenberger M, Schuberth S, Schreiber F, Zuluaga Rendon Z and König P (2020). Hyperscanning: a valid method to study neural inter-brain underpinnings of social interaction. doi.org/10.3389/fnhum.2020.00039. Front Hum Neurosci 14:39

Social interactions are a crucial part of human life. Understanding the neural underpinnings of social interactions is a challenging task that the hyperscanning method has been trying to tackle over the last two decades.
With a review of state-of-the-art methods to measure brain activity, discussion of different types of analyses in this field and the presentation of some selected hyperscanning studies, we aim to give a comprehensive overview of the last 20 years of hyperscanning research.