Hyperscanning refers to obtaining simultaneous neural recordings from more than one person (Montage et al., 2002), that can be used to study interactive situations. In particular, hyperscanning with Electroencephalography (EEG) is becoming increasingly popular since it allows researchers to explore the interactive brain with a high temporal resolution. Notably, there is a 40-year gap between the first instance that simultaneous measurement of EEG activity was mentioned in the literature (Duane and Behrendt, 1965), and the first actual description of an EEG hyperscanning setup being implemented (Babiloni et al., 2006). To date, specific EEG hyperscanning devices have not yet been developed and EEG hyperscanning setups are not usually described with sufficient detail to be easily reproduced. Here, we offer a step-by-step description of solutions to many of these technological challenges. Specifically, we describe and provide customized implementations of EEG hyperscanning setups using hardware and software from different companies: Brain Products, ANT, EGI, and BioSemi.
• Necessary details to set up a functioning EEG hyperscanning protocol are provided.
• The setups allow independent measures and measures of synchronization between the signals of two different brains.
• Individual electrical Ground and Reference is obtained in all discussed systems.