Local field potential: Difference between revisions

Part of the [[low-pass filter]]ing giving rise to local field potentials is due to complex electrical properties of extracellular space.<ref name="Bédard 2004">{{cite journal | vauthors = Bédard C, Kröger H, Destexhe A | title = Modeling extracellular field potentials and the frequency-filtering properties of extracellular space | journal = Biophysical Journal | volume = 86 | issue = 3 | pages = 1829–1842 | date = March 2004 | pmid = 14990509 | pmc = 1304017 | doi = 10.1016/S0006-3495(04)74250-2 | arxiv = physics/0303057 | bibcode = 2004BpJ....86.1829B }}</ref> The fact that the extracellular space is not homogeneous, and is composed of a complex aggregate of highly [[Electrical resistivity and conductivity|conductive]] fluids and low-conductive and [[capacitance|capacitive]] membranes, can exert strong low-pass filtering properties. Ionic [[diffusion]], which plays an important role in membrane potential variations, can also act as a low-pass filter.