Analysis and simulation of the neurophonic potential in the laminar nucleus of the owl
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1
Humboldt-Universität zu Berlin, Germany
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2
RWTH Aachen, Germany
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3
BCCN Berlin, Germany
It is a challenge to understand how the brain represents temporal events. One of the most intriguing questions is how sub-millisecond representations can be achieved despite the large temporal variations at all levels of processing. Here we tackle such questions by a theoretical approach. We use the auditory system as an example and study specifically the neurophonic potential, a frequency-following potential occurring in the network formed by nucleus magnocellularis and nucleus laminaris in the brainstem of the bird. The neurophonic potential has a temporal precision below 100 microseconds. This local field potential consists of at least three spectral components. Our studies aim at revealing the origin of these spectral components. Our hypothesis is that magnocellular axons are the origin of high-frequency component of the neurophonic, whereas action potentials in the laminar neurons are the origin of the 1-2 kHz component. We present advanced analysis of in-vivo data, numerical simulations of the neurophonic, and analytical results to test this hypothesis.
Conference:
Bernstein Symposium 2008, Munich, Germany, 8 Oct - 10 Oct, 2008.
Presentation Type:
Poster Presentation
Topic:
All Abstracts
Citation:
Kuokkanen
P,
Lautemann
N,
Wagner
H and
Kempter
R
(2008). Analysis and simulation of the neurophonic potential in the laminar nucleus of the owl.
Front. Comput. Neurosci.
Conference Abstract:
Bernstein Symposium 2008.
doi: 10.3389/conf.neuro.10.2008.01.079
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Received:
17 Nov 2008;
Published Online:
17 Nov 2008.
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Correspondence:
Paula Kuokkanen, Humboldt-Universität zu Berlin, 82152 Planegg-Martinsried, Germany, p.kuokkanen@biologie.hu-berlin.de