Cited by 486Neural dynamics and brain functionMemory and Neural MechanismsNeuroscience and Neuropharmacology Research

Hippocampal network patterns of activity in the mouse

Buzsáki, G., Buhl, D.L., Harris, K.D., Csicsvari, J., Czéh, B., Morozov, A.·2003·Neuroscience

Abstract

Genetic engineering of the mouse brain allows investigators to address novel hypotheses in vivo. Because of the paucity of information on the network patterns of the mouse hippocampus, we investigated the electrical patterns in the behaving animal using multisite silicon probes and wire tetrodes. Theta (6-9 Hz) and gamma (40-100 Hz) oscillations were present during exploration and rapid eye movement sleep. Gamma power and theta power were comodulated and gamma power varied as a function of the theta cycle. Pyramidal cells and putative interneurons were phase-locked to theta oscillations. During immobility, consummatory behaviors and slow-wave sleep, sharp waves were present in cornu ammonis region CA1 of the hippocampus stratum radiatum associated with 140-200-Hz "ripples" in the pyramidal cell layer and population burst of CA1 neurons. In the hilus, large-amplitude "dentate spikes" occurred in association with increased discharge of hilar neurons. The amplitude of field patterns was larger in the mouse than in the rat, likely reflecting the higher neuron density in a smaller brain. We suggest that the main hippocampal network patterns are mediated by similar pathways and mechanisms in mouse and rat.

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Crossref · 10.1016/s0306-4522(02)00669-3

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  • Movement or arousal results in pronounced suppression of thalamocortical high voltage spindles.

    “Movement or arousal results in a pronounced suppression of this thalamocortical rhythm”

    From Waking state: rapid variations modulate neural and behavioral responses (2015) · cites this paper as Buzsaki et al., 2003

  • Transitions from locomotion to quiescence, or from externally oriented to internally oriented movements, are associated with a rapid decrease of hippocampal theta activity.

    “Transitions from locomotion to quiescence, or from externally oriented movements (e.g. exploration) towards internally oriented movements (e.g. grooming, consuming) are associated with a rapid decrease of theta activity in the hippocampus”

    From Waking state: rapid variations modulate neural and behavioral responses (2015) · cites this paper as Buzsaki et al., 2003

  • The amplitude envelope of the gamma oscillation was phase-locked to the theta rhythm.

    “The amplitude envelope of the gamma oscillation was phase-locked to the theta rhythm (Figures 3A,B and 4C), as it is in the biological CA1, representing cross-frequency coupling (Soltesz and Deschênes, 1993; Bragin et al., 1995; Buzsáki et al., 2003; Jensen and Colgin, 2007; Belluscio et al., 2012).”
  • Physiological patterns in hippocampal layers (deep-voltage profiles, ripple sharp wave complex, DG spikes) were observed in control animals, allowing recognition of neuronal network assemblies.

    “We observed, in agreement with Buzsáki and colleagues [21], physiological patterns in hippocampal layers that included deep-voltage profiles, the ripple sharp wave complex, and DG spikes in control animals, allowing for recognition of neuronal network assemblies (Fig. 1C–E, Fig. 2A) relevant to hippocampal function [21] and inter-ictal or seizure state.”
  • Local field potentials represent post-synaptic potential activities from synchronized neurons.

    “Because LFPs represent post-synaptic potential activities from synchronized neurons [21]”

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Authors
Buzsáki, G., Buhl, D. L., Harris, K. D., Csicsvari, J., Czéh, B., & Morozov, A.
Affiliations
  • Rutgers, The State University of New Jersey (US)
  • Columbia University (US)
Corresponding author
Buzsáki, G.
Venue
Neuroscience
Publisher
Elsevier BV
Published
2003-01
Volume
116
Issue
1
Pages
201-211
ISSN
0306-4522 (ISSN-L)
OpenAlex
W1992431848
Cited by
486
References
81
Citations by year
2026: 9 · 2025: 21 · 2024: 22 · 2023: 20 · 2022: 31 · 2021: 20 · 2020: 16 · 2019: 39 · 2018: 27 · 2017: 27 · 2016: 28 · 2015: 19 · 2014: 23 · 2013: 20 · 2012: 25
FWCI
6.03
Type
journal article
Language
en
Open access
closed
Locations
  • Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
  • National Institutes of Health (5p41rr009754-09)
  • National Institute of Mental Health (R01MH054671, MH54671)
  • National Institute of Neurological Disorders and Stroke (R01NS034994, NS-34994)
  • National Center for Research Resources (1P41RR-09754)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
hippocampal network activity, theta oscillations, gamma oscillations, sharp-wave ripples, sleep spindles, CA1 pyramidal neurons, interneurons, phase locking, hilar neurons, mouse hippocampus, mouse-rat comparison
MeSH terms
Animals, Electrophysiology, Hippocampus, Interneurons, Male, Mice, Inbred C57BL, Nerve Net, Sleep, REM, Theta Rhythm, Pyramidal Cells, Mice

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