Encyclopedia of Computational Neuroscience

Living Edition
| Editors: Dieter Jaeger, Ranu Jung

Local Field Potential Interaction with the Extracellular Medium

Living reference work entry
DOI: https://doi.org/10.1007/978-1-4614-7320-6_720-1


The local field potential (LFP) is the electric potential in the extracellular space around neurons. The LFP is generated by electric currents and charges and is also interacting in several possible ways with the extracellular medium, such as capacitive interactions, polarization, or trough ionic diffusion. These types of interaction confer specific frequency dependence of the extracellular electric potential and thus are important for correctly interpreting the LFP, as well as estimating the underlying neuronal sources (inverse problem).

Detailed Description


In contrast to the electroencephalogram (EEG) recorded at the surface of the scalp, the local field potential (LFP) is recorded by inserting microelectrodes into neural tissue, and it is recordable using a variety of electrode systems, such as metal or silicon electrodes or glass micropipettes. Early studies established that action potentials have a limited participation to EEGs or LFPs (Bremer 1938, 1949;...


Electric Parameter Ionic Diffusion Extracellular Medium Local Field Potential Macroscopic Model 
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Further Reading

  1. Koch C, Segev I (eds) (1998) Methods in neuronal modeling, 2nd edn. MIT Press, Cambridge, MAGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Unit of Neuroscience Information and ComplexityCentre national de la recherche scientifiqueGif-sur-YvetteFrance