Brain-to-Brain Connectivity through the simultaneous recording of neuroelctric

There is general agreement, in the field of Social Neurosciences, about the influence exerted by other individuals on cognitive processes established during experimental tasks involving an interaction between subjects. The recent field of simultaneous multi-subjects recordings (“hyperscanning”) during specific interaction tasks allows to study the neurophysiological basis of such interaction, taking into account, for the first time, the causal relations between the brain activations in the involved subjects, providing information that cannot be achieved by the separate analysis of each experimental subject. However, ss for today, an approach to the estimation of functional connectivity specifically developed to describe a system made of different interacting subjects is completely lacking. As a consequence, we lack a modeling framework giving an interpretative and physiological meaning to the statistical causality obtained empirically from the brain activations of different subjects when interacting, and disappearing when such interactions are disrupted. In summary, we lack a specific modeling that can help us to ascribe a meaningful and physiologically plausible interpretation to the brain-to-brain causality we obtain in the statistical sense.