Reentry is a neural structuring of the brain, which is characterized by the ongoing bidirectional exchange of signals along reciprocal axonal fibers linking two or more brain areas.^[1] It is hypothesized to allow for widely distributed groups of neurons to achieve integrated and synchronized firing,^[2] which is proposed to be a requirement for consciousness, as outlined by Gerald Edelman and Giulio Tononi in their book A Universe of Consciousness.^[3]