ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2011
Relationships between hippocampal sharp waves, ripples, and fast gamma oscillation: influence of dentate and entorhinal cortical activity.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 188 papers.
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Who cites it
188 citing papers in PubMed, 306 citations in OpenAlex.
- Spontaneous fast gamma activity in the septal hippocampal region correlates with spatial learning in humans.Behavioural brain research · 2014Trial
- Integrating neural decoding, memristive materials, and adaptive control frameworks for next-generation hippocampal memory prosthetics.iScience · 2026Review
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- Dentate gyrus interneurons modulate winner-take-all network dynamics in freely behaving mice.Neuron · 2026Article
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- Sharp wave-ripple clusters enhance hippocampal-neocortical engagement for memory consolidation.bioRxiv : the preprint server for biology · 2026Article
- Global coincident bursts of high frequency oscillations across the human cortex coordinate large-scale memory processing.Nature communications · 2026Article
- Hippocampal ripple diversity organizes neuronal reactivation dynamics in the offline brain.Neuron · 2025Article
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- Spatiotemporal patterns differentiate hippocampal sharp-wave ripples from interictal epileptiform discharges in mice and humans.Nature communications · 2025Article
- Mouse Hippocampal Sharp-Wave Ripple Dataset Curated From Public Neuropixels Datasets.Scientific data · 2025Article
- Ripple contributions to human memory: making the spiking content count.Nature reviews. Neuroscience · 2025Review
- REM sleep prefrontal ripple chains mediate distinct cortical-hippocampal reactivation patterns compared to NREM ripples.bioRxiv : the preprint server for biology · 2025Article
- Testosterone and 17β-estradiol regulate hippocampal area CA3 sharp waves in male and female rats.Cell reports · 2025Article
- Memory processing by hippocampal adult-born neurons.Neurobiology of learning and memory · 2025Review
- Modulation of Hippocampal Sharp-Wave Ripples by Behavioral States and Body Movements in Head-Fixed Rodents.eNeuro · 2025Article
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- Multi-Shank 1024 Channels Active SiNAPS Probe for Large Multi-Regional Topographical Electrophysiological Mapping of Neural Dynamics.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Opposite serotonergic modulation of sharp waves in the dorsal and ventral hippocampus.Frontiers in synaptic neuroscience · 2025Article
128 more citing papers are in PubMed but not listed here.
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
Abstract
Hippocampal sharp waves (SPWs) and associated fast ("ripple") oscillations (SPW-Rs) in the CA1 region are among the most synchronous physiological patterns in the mammalian brain. Using two-dimensional arrays of electrodes for recording local field potentials and unit discharges in freely moving rats, we studied the emergence of ripple oscillations (140-220 Hz) and compared their origin and cellular-synaptic mechanisms with fast gamma oscillations (90-140 Hz). We show that (1) hippocampal SPW-Rs and fast gamma oscillations are quantitatively distinct patterns but involve the same networks and share similar mechanisms; (2) both the frequency and magnitude of fast oscillations are positively correlated with the magnitude of SPWs; (3) during both ripples and fast gamma oscillations the frequency of network oscillation is higher in CA1 than in CA3; and (4) the emergence of CA3 population bursts, a prerequisite for SPW-Rs, is biased by activity patterns in the dentate gyrus and entorhinal cortex, with the highest probability of ripples associated with an "optimum" level of dentate gamma power. We hypothesize that each hippocampal subnetwork possesses distinct resonant properties, tuned by the magnitude of the excitatory drive.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.