Highlights d Rats show stronger memory for highly rewarded locations d Disruption of hippocampal SWRs only affects memory for highly rewarded locations d Hippocampal replay events are biased to trajectories associated with high reward

No abstract

Current approaches to monitor neuronal activity either allow to flexibly record from multiple widely separated brain regions (micro-drive arrays) but with a limited sampling density or to provide denser sampling at the expense of a flexible placement in multiple brain regions (neural probes). By combining these two approaches and their benefits, we present an alternative solution for flexible and simultaneous recordings from widely distributed populations of neurons in freely behaving rats.