Artificial Intelligence-based technologies such as robots are developing at an unprecedented speed in our societies, considerably impacting human lives. In order to better understand this impact, we need to investigate the effect of interacting with these technologies on human mental and social lives. This project will focus on the relationship between the sense of embodied selfhood and social joint agency in human-human versus human-humanoid robot interactions. In doing so, behavioral, physiological, self-reports and neural data will be collected during a joint task performed in dyads of either two humans or a human and a humanoid robot. The results will further our understanding of how humans are affected mentally and socially by interacting with artificial agents.