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Encyclopedia of Computational Neuroscience pp 1–6Cite as

Extracellular Potentials, Forward Modeling of

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Definition

Forward modeling of extracellular potentials refers to the calculation of electrical potentials recorded inside or outside the brain due to activity in neuronal (and, if relevant, glial) sources. This contrasts the “inverse” problem which amounts to estimating the underlying neural sources from recorded potentials.

Detailed Description

Extracellular potentials recorded inside or outside the brain are generated by transmembrane currents from cells in the vicinity of the recording electrode. To propagate from the membrane to a recording electrode inside the brain, the signal has to pass through brain tissue consisting of a tightly packed matrix of neurons and glial cells embedded in the extracellular medium (Nunez and Srinivasan 2006). A well-founded biophysical forward-modeling scheme (Rall and Shepherd 1968; Holt and Koch 1999), incorporating detailed reconstructed neuronal morphologies, allows for precise calculations of extracellular potentials – both spikes(the...

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Authors and Affiliations

  1. Department of Mathematical Sciences and Technology, Norwegian University of Life Sciences, 5003, NO-1432, Ås, Akershus, Norway

    Prof. Gaute T. Einevoll

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  1. Prof. Gaute T. Einevoll
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Correspondence to Gaute T. Einevoll .

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Editors and Affiliations

  1. Atlanta, Georgia, USA

    Dieter Jaeger

  2. Department of Biomedical Engineering, Florida International University, Miami, Florida, USA

    Ranu Jung

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Einevoll, G.T. (2013). Extracellular Potentials, Forward Modeling of. In: Jaeger, D., Jung, R. (eds) Encyclopedia of Computational Neuroscience. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-7320-6_59-1

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  • DOI: https://doi.org/10.1007/978-1-4614-7320-6_59-1

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  • Online ISBN: 978-1-4614-7320-6

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Chapter history

  1. Latest

    Extracellular Potentials, Forward Modeling of
    Published:
    01 September 2020

    DOI: https://doi.org/10.1007/978-1-4614-7320-6_59-2

  2. Original

    Extracellular Potentials, Forward Modeling of
    Published:
    07 February 2014

    DOI: https://doi.org/10.1007/978-1-4614-7320-6_59-1

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