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Sorting through it all: how post-learning replay reflects the prioritisation of experiences

Since the initial demonstration of Tambini et al (Neuron 2010) that patterns of brain activity that characterise an experience persist into post-encoding rest periods, we have continued to explore and characterise hippocampal and cortical encoding states that are reactivated during rest, other task periods and moments of behavioural salience. These replays promote memory stability as evidenced by later behaviour indices of memory access. I will present our most recent work providing evidence that replay also serves as an opportunity for the brain to prioritise and, thus, reorganise preceding experiences and is sensitive to reward and frequency.