A New Type of Neuroplasticity Rewires the Brain After a Single Experience

'Neurons that fire together, wire together' — the Hebbian rule taught in every intro neuroscience course — turns out to be incomplete. Lead with what's new: a distinct plasticity mechanism operating on longer timescales can rewire the brain after a single salient experience. The reader gets a correction to a textbook claim. Mention the implications for PTSD and addiction research, where single-exposure learning has long been hard to explain.