University of California - Riverside Jun 12 2026 Traumatic brain injuries (TBI) - even mild concussions - may trigger a chain reaction in the brain that disrupts neuronal communication, long-term memory, and cognition, according to University of California, Riverside research investigating how the brain's immune system responds after injury. The study, published in the Journal of Neuroinflammation , identifies a novel interaction between an innate immune receptor in the brain called toll-like