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Nat Rev Neurosci. 2016 Apr;17(4):239-49. doi: 10.1038/nrn.2016.21. Epub 2016 Mar 10.

Rhythms of the hippocampal network.

Author information

1
Center for Learning and Memory, Department of Neuroscience, The University of Texas at Austin, Austin, Texas 78712, USA.

Abstract

The hippocampal local field potential (LFP) shows three major types of rhythms: theta, sharp wave-ripples and gamma. These rhythms are defined by their frequencies, they have behavioural correlates in several species including rats and humans, and they have been proposed to carry out distinct functions in hippocampal memory processing. However, recent findings have challenged traditional views on these behavioural functions. In this Review, I discuss our current understanding of the origins and the mnemonic functions of hippocampal theta, sharp wave-ripples and gamma rhythms on the basis of findings from rodent studies. In addition, I present an updated synthesis of their roles and interactions within the hippocampal network.

PMID:
26961163
PMCID:
PMC4890574
DOI:
10.1038/nrn.2016.21
[Indexed for MEDLINE]
Free PMC Article

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