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Richard Kempter
Humboldt University of Berlin
100Publications
28H-index
3,365Citations
Publications 100
Newest
Published on Mar 1, 2019in Journal of Neurophysiology2.61
Thomas McColgan5
Estimated H-index: 5
(Humboldt University of Berlin),
Paula T. Kuokkanen6
Estimated H-index: 6
(Humboldt University of Berlin)
+ 1 AuthorsRichard Kempter28
Estimated H-index: 28
(Humboldt University of Berlin)
Synaptic currents are assumed to make a major contribution to the extracellular field potential in the brain, but it is hard to directly isolate these synaptic components. Here we take advantage of...
Published in European Journal of Neuroscience2.78
André Holzbecher (Humboldt University of Berlin), Richard Kempter28
Estimated H-index: 28
(Humboldt University of Berlin)
Published on Oct 1, 2018in Journal of Neurophysiology2.61
Martina Michalikova1
Estimated H-index: 1
(Humboldt University of Berlin),
Michiel W. H. Remme11
Estimated H-index: 11
(Humboldt University of Berlin),
Richard Kempter28
Estimated H-index: 28
(Humboldt University of Berlin)
We addressed the origin of spikelets, using compartmental models of pyramidal neurons. Comparing our simulation results with published extracellular spikelet recordings revealed an axonal origin of...
Published on Apr 1, 2018in Journal of Neurophysiology2.61
Paula T. Kuokkanen6
Estimated H-index: 6
(Humboldt University of Berlin),
Go Ashida10
Estimated H-index: 10
+ 6 AuthorsRichard Kempter28
Estimated H-index: 28
(Humboldt University of Berlin)
Extracellular field potentials (EFPs) generate clinically important signals, but their sources are incompletely understood. As a model, we have analyzed the auditory neurophonic in the barn owl’s nucleus laminaris. There the EFP originates predominantly from spiking in the afferent axons, with spectral power ≳1 kHz, while postsynaptic laminaris neurons contribute little. In conclusion, the identification of EFP sources is possible if they have different spectral components and if their activitie...
Published on Feb 16, 2018in The Journal of Neuroscience6.07
José R. Donoso5
Estimated H-index: 5
(Humboldt University of Berlin),
Dietmar Schmitz47
Estimated H-index: 47
+ 1 AuthorsRichard Kempter28
Estimated H-index: 28
(Humboldt University of Berlin)
Hippocampal ripples are involved in memory consolidation, but the mechanisms underlying their generation remain unclear. Models relying on interneuron networks in the CA1 region disagree on the predominant source of excitation to interneurons: either ‘direct9, via the Schaffer collaterals that provide feedforward input from CA3 to CA1, or ‘indirect9, via the local pyramidal cells in CA1, which are embedded in a recurrent excitatory-inhibitory network. Here, we used physiologically constrained co...
Published on Oct 2, 2017in PLOS Computational Biology
Tiziano D’Albis1
Estimated H-index: 1
,
Richard Kempter28
Estimated H-index: 28
,
Volker Steuber14
Estimated H-index: 14
Published on Sep 5, 2017in eLife7.55
Thomas McColgan5
Estimated H-index: 5
(Humboldt University of Berlin),
Ji Liu1
Estimated H-index: 1
(UMD: University of Maryland, College Park)
+ 3 AuthorsRichard Kempter28
Estimated H-index: 28
(Humboldt University of Berlin)
Extracellular field potentials (EFPs) are an important source of information in neuroscience, but their physiological basis is in many cases still a matter of debate. Axonal sources are typically discounted in modeling and data analysis because their contributions are assumed to be negligible. Here, we show experimentally and theoretically that contributions of axons to EFPs can be significant. Modeling action potentials propagating along axons, we showed that EFPs were prominent in the presence...
Published on Aug 14, 2017in bioRxiv
Bartosz Telenczuk8
Estimated H-index: 8
(CNRS: Centre national de la recherche scientifique),
Richard Kempter28
Estimated H-index: 28
(Humboldt University of Berlin)
+ 1 AuthorsAlain Destexhe60
Estimated H-index: 60
(CNRS: Centre national de la recherche scientifique)
Abstract Neurons in the primary somatosensory cortex (S1) respond to peripheral stimulation with synchronized bursts of spikes, which lock to the macroscopic 600-Hz EEG waves. The mechanism of burst generation and synchronization in S1 is not yet understood. Using models of single-neuron responses fitted to unit recordings from macaque monkeys, we show that these synchronized bursts are the consequence of correlated synaptic inputs combined with a refractory mechanism. In the presence of noise t...
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