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Theta Oscillations Provide Temporal Windows for Local Circuit Computation in the Entorhinal-Hippocampal Loop
Theta oscillations are believed to play an important role in the coordination of neuronal firing in the entorhinal (EC)-hippocampal system but the underlying mechanisms are not known. WeExpand
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Cross-Frequency Phase–Phase Coupling between Theta and Gamma Oscillations in the Hippocampus
Neuronal oscillations allow for temporal segmentation of neuronal spikes. Interdependent oscillators can integrate multiple layers of information. We examined phase–phase coupling of theta and gammaExpand
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Theta Phase Segregation of Input-Specific Gamma Patterns in Entorhinal-Hippocampal Networks
Precisely how rhythms support neuronal communication remains obscure. We investigated interregional coordination of gamma oscillations using high-density electrophysiological recordings in the ratExpand
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Integration and Segregation of Activity in Entorhinal-Hippocampal Subregions by Neocortical Slow Oscillations
Brain systems communicate by means of neuronal oscillations at multiple temporal and spatial scales. In anesthetized rats, we find that neocortical "slow" oscillation engages neurons in prefrontal,Expand
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The log-dynamic brain: how skewed distributions affect network operations
We often assume that the variables of functional and structural brain parameters — such as synaptic weights, the firing rates of individual neurons, the synchronous discharge of neural populations,Expand
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Hippocampal CA1 pyramidal cells form functionally distinct sublayers
Hippocampal CA1 pyramidal neurons have frequently been regarded as a homogeneous cell population in biophysical, pharmacological and modeling studies. We found robust differences between pyramidalExpand
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Relationships between Hippocampal Sharp Waves, Ripples, and Fast Gamma Oscillation: Influence of Dentate and Entorhinal Cortical Activity
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. UsingExpand
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Preconfigured, skewed distribution of firing rates in the hippocampus and entorhinal cortex.
Despite the importance of the discharge frequency in neuronal communication, little is known about the firing-rate patterns of cortical populations. Using large-scale recordings from multiple layersExpand
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Temporal delays among place cells determine the frequency of population theta oscillations in the hippocampus
Driven either by external landmarks or by internal dynamics, hippocampal neurons form sequences of cell assemblies. The coordinated firing of these active cells is organized by the prominent “theta”Expand
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REM Sleep Reorganizes Hippocampal Excitability
Sleep is composed of an alternating sequence of REM and non-REM episodes, but their respective roles are not known. We found that the overall firing rates of hippocampal CA1 neurons decreased acrossExpand
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