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[PDF] Reactivation of hippocampal ensemble memories during sleep. | Semantic Scholar

@article{Wilson1994ReactivationOH,
  title={Reactivation of hippocampal ensemble memories during sleep.},
  author={Mathew Wilson and Bruce L. McNaughton},
  journal={Science},
  year={1994},
  volume={265 5172},
  pages={
          676-9
        },
  url={https://api.semanticscholar.org/CorpusID:890257}
}

Recordings from large ensembles of hippocampal "place cells" in three rats showed that cells that fired together when the animal occupied particular locations in the environment exhibited an increased tendency to fire together during subsequent sleep, in comparison to sleep episodes preceding the behavioral tasks.

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Dynamics of the hippocampal ensemble code for space.

Parallel recording methods outlined here make possible the study of the dynamics of neuronal interactions during unique behavioral events, which suggests that new spatial information creates conditions in the hippocampal circuitry that are conducive to the synaptic modification presumed to be involved in learning.