# Hippocampal Replay **Domain:** Neuroscience / Memory Consolidation **Doc Type:** Scientific Concept Node **Maturity:** Established Phenomenon, Active Interpretation **Related:** [[Sharp-Wave Ripple]], [[Generative Memory Model]], [[Long-Term Memory Substrate]] --- ## Definition **Hippocampal replay** is the reactivation of neural activity sequences associated with prior or possible experiences, often during rest or sleep. Replay is studied in learning, consolidation, planning, and the coordination of hippocampal and cortical representations. ## Evidentiary boundary Replay is not a literal recording of experience. Its sequences can be compressed, reordered, prospective, or shaped by task and internal state.