The Attribution of Moral Agency in the Context of Brain-Brain Interfaces: An Analysis of Collective Intentionality Based on Technological Mediation

Brain-brain interfaces, through the closed-loop coupling of cross-brain neural signals, alter the generation and maintenance of shared intentions, causing collective intentionality to assume a technologically mediated form characterized by constitutive coupling, mutual predictability, and norm internalization, thereby giving rise to the question of the attribution of moral agency. The traditional framework that takes the individual as the ultimate unit of accountability faces structural tensions: normative capacity tends toward systemic functionalization, reflective identification becomes destabilized due to the reorganization of self-boundaries and intention ownership, and responsibility attribution is transformed into an institutional problem of accountability interfaces under conditions of multi-source causal chains and systemic opacity. An ethical response need not aim at restoring "intact individual control" but should instead emphasize institutional compensation.