Time-dependent reorganization of the neural circuits supporting retention and retrieval, often involving interactions between the hippocampus and cerebral cortex. Whether a particular detailed episode becomes independent of the hippocampus is a further empirical question.
An account in which reactivation of recently encoded representations during offline states modifies distributed neural circuits. Coordination of hippocampal sharp-wave ripples, sleep spindles and cortical sleep slow oscillations provides a candidate timing mechanism. Reactivation, strengthened behaviour and permanent cortical storage are distinct claims requiring different evidence.
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