Selective suppression of hippocampal ripples impairs spatial memory

Nat Neurosci. 2009 Oct;12(10):1222-3. doi: 10.1038/nn.2384. Epub 2009 Sep 13.

Abstract

Sharp wave-ripple (SPW-R) complexes in the hippocampus-entorhinal cortex are believed to be important for transferring labile memories from the hippocampus to the neocortex for long-term storage. We found that selective elimination of SPW-Rs during post-training consolidation periods resulted in performance impairment in rats trained on a hippocampus-dependent spatial memory task. Our results provide evidence for a prominent role of hippocampal SPW-Rs in memory consolidation.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Action Potentials / physiology
  • Analysis of Variance
  • Animals
  • Behavior, Animal
  • Biophysics
  • Electric Stimulation / methods
  • Electroencephalography / methods
  • Evoked Potentials / physiology*
  • Hippocampus / cytology
  • Hippocampus / physiology*
  • Male
  • Maze Learning / physiology
  • Memory Disorders / physiopathology*
  • Nerve Net / physiology
  • Neural Inhibition / physiology*
  • Neurons / physiology
  • Online Systems
  • Rats
  • Rats, Long-Evans
  • Space Perception / physiology*
  • Spectrum Analysis / methods