Spontaneous waves in the dentate gyrus of slices from the ventral hippocampus.

@article{Colgin2004SpontaneousWI,
  title={Spontaneous waves in the dentate gyrus of slices from the ventral hippocampus.},
  author={Laura Lee Colgin and Don Kubota and Fernando A. Brucher and Yousheng Jia and Erin Branyan and Christine M. Gall and Gary Lynch},
  journal={Journal of neurophysiology},
  year={2004},
  volume={92 6},
  pages={
          3385-98
        }
}
Spontaneous negative-going potentials occurring at an average frequency of 0.7 Hz were recorded from the dentate gyrus of slices prepared from the temporal hippocampus of young adult rats. These events (here termed "dentate waves") in several respects resembled the dentate spikes described for freely moving rats during immobile behaviors and slow-wave sleep. Action potentials were observed on the descending portion of the in vitro waves and, as expected from this, whole cell recordings… 
View on PubMed
jn.physiology.org
19 Citations
Highly Influential Citations
3
Background Citations
12
Methods Citations
1
Results Citations
4

19 Citations

Citation Type

Citation Type

Origins of an Intrinsic Hippocampal EEG Pattern
TLDR
The results indicate that constitutive release from the mossy fiber terminal boutons regulates the incidence of SPWs and their contribution to information processing in hippocampus.
Title Origins of an Intrinsic Hippocampal EEG Pattern
TLDR
The results indicate that constitutive release from the mossy fiber terminal boutons regulates the incidence of SPWs and their contribution to information processing in hippocampus.
Perisomatic-targeting interneurons control the initiation of hippocampal population bursts
TLDR
This experiment showed that induced spiking activity of an individual perisomatic-targeting interneuron can both suppress and subsequently enhance local sharp wave generation, suggesting that interneurons may play an integral part in the local information processing that takes place in the hippocampus.
The hippocampal CA3 region can generate two distinct types of sharp wave‐ripple complexes, in vitro
TLDR
It is suggested that the hippocampus can generate dynamic changes in its activity stemming from the same excitatory and inhibitory circuits, and so, might provide the cellular and network basis for an input‐specific and activity‐dependent information transmission.
Relationships between Hippocampal Sharp Waves, Ripples, and Fast Gamma Oscillation: Influence of Dentate and Entorhinal Cortical Activity
TLDR
It is hypothesized that each hippocampal subnetwork possesses distinct resonant properties, tuned by the magnitude of the excitatory drive, which would explain the high frequency of ripple oscillations in the CA1 region.
Slow gamma rhythms in CA3 are entrained by slow gamma activity in the dentate gyrus.
TLDR
Investigation of slow and fast gamma rhythms in paired recordings from DG and CA3 in freely moving rats found that slow gamma rhythms, as opposed to fast Gamma rhythms, were particularly prominent in DG, and directional causal influences between DG andCA3 were investigated by Granger causality analysis.
Properties of in vivo interictal spike generation in the human subiculum.
TLDR
The results indicate that multiple spike generator mechanisms exist in the human epileptic subiculum suggesting a complex network interplay between medial and lateral temporal structures during interictal epileptic activity.
Beta2 oscillations (23–30 Hz) in the mouse hippocampus during novel object recognition
TLDR
The results suggest that hippocampal beta2 activity is associated with a dynamic network state tuned for novelty detection and which may allow new learning to occur.
Blockade of NMDA receptors enhances spontaneous sharp waves in rat hippocampal slices
Spatial coherence and stationarity of local field potentials in an isolated whole hippocampal preparation in vitro
TLDR
It is found that the isolated hippocampal LFP recordings represent a single signal and may be regarded as a unitary circuitry, and there is a finely tuned inverse relationship between temporal variability in the hippocampal isolate’s L FP recordings and their spatial coherence.
...
1
2
...

References

SHOWING 1-10 OF 61 REFERENCES
Hippocampal sharp waves: Their origin and significance
Endogenous waves in hippocampal slices.
TLDR
Evidence that sharp waves occur spontaneously in appropriately prepared rat hippocampal slices is described and various lines of evidence indicate that they are propagated by the CA3 associational system.
Dentate EEG spikes and associated interneuronal population bursts in the hippocampal hilar region of the rat.
TLDR
It is suggested that dentate spike-associated synchronized bursts of hilar-region interneurons provide a suppressive effect on the excitability of the CA3-CA1 network in the intact brain.
Spontaneous EEG spikes in the normal hippocampus. I. Behavioral correlates, laminar profiles and bilateral synchrony.
Feed‐forward and feed‐back activation of the dentate gyrus in vivo during dentate spikes and sharp wave bursts
TLDR
This work has investigated the cellular‐synaptic generation of DSs and SPWs by intracellular recording from granule cells, pyramidal cells, and interneurons in anesthetized rats and found DSs were associated with large depolarizing potentials in granules, but they rarely discharged action potentials.
Cellular and network mechanisms underlying spontaneous sharp wave-ripple complexes in mouse hippocampal slices.
TLDR
Extracellular and intracellular recordings revealed a surprisingly strong inhibition of most CA1 pyramidal cells during SPW-R, suggesting strong separation between members and non-members of the network may serve to ensure a high signal-to-noise ratio in information processing during sharp wave-ripple complexes.
Phasic boosting of medial perforant path-evoked granule cell output time-locked to spontaneous dentate EEG spikes in awake rats.
TLDR
Dentate spikes may function to intermittently boost excitatory transmission in the entorhinal cortex-dentate gyrus-CA3 circuit and demonstrate enhancement of perforant path-evoked granule cell output time-locked to DSs.
Cellular bases of hippocampal EEG in the behaving rat
Long‐term potentiation is impaired in rat hippocampal slices that produce spontaneous sharp waves
TLDR
Results suggest the possibility that SPWs in the hippocampus constitute a neural mechanism for forgetting, and single stimulation pulses delivered intermittently in a manner similar to the SPW pattern interfered with LTP to a similar degree as spontaneous SPWs.
Generation of Theta and Gamma Rhythms in the Hippocampus
  • L. S. Leung
  • Biology
    Neuroscience & Biobehavioral Reviews
  • 1998
...
1
2
3
4
5
...