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Proc Natl Acad Sci U S A. 2003 Feb 18;100(4):2065-9. Epub 2003 Feb 7.

Communication between neocortex and hippocampus during sleep in rodents.

Author information

  • 1Center for Molecular and Behavioral Neuroscience, Rutgers, State University of New Jersey, 197 University Avenue, Newark, NJ 07102, USA.

Abstract

Both neocortical and hippocampal networks organize the firing patterns of their neurons by prominent oscillations during sleep, but the functional role of these rhythms is not well understood. Here, we show a robust correlation of neuronal discharges between the somatosensory cortex and hippocampus on both slow and fine time scales in the mouse and rat. Neuronal bursts in deep cortical layers, associated with sleep spindles and delta waves/slow rhythm, effectively triggered hippocampal discharges related to fast (ripple) oscillations. We hypothesize that oscillation-mediated temporal links coordinate specific information transfer between neocortical and hippocampal cell assemblies. Such a neocortical-hippocampal interplay may be important for memory consolidation.

PMID:
12576550
[PubMed - indexed for MEDLINE]
PMCID:
PMC149959
Free PMC Article

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