| Issue |
Europhys. Lett.
Volume 36, Number 4, November I 1996
|
|
|---|---|---|
| Page(s) | 313 - 318 | |
| Section | Cross-disciplinary physics and related areas of science and technology | |
| DOI | https://doi.org/10.1209/epl/i1996-00228-6 | |
| Published online | 01 September 2002 | |
Potential distribution on a neuronal somatic membrane during an action potential
Centre de Physique Théorique (UPR CNRS 7061),
CNRS - Luminy case 907, F-13288 Marseille cedex 9, France
Received:
28
May
1996
Accepted:
19
September
1996
In recent experiments, inhomogeneities in the somatic membrane potential of a firing neuron have been observed by Gogan et al. Ion channel interactions result in collective behavior which might lead to spontaneous symmetry breaking. The simulations presented in this paper show that, with a uniform distribution of ion channels, such spontaneous symmetry breaking is not to be expected. On the other hand, a nonuniform distribution of ion channels effectively leads to a nonuniform membrane potential distribution. The inhomogeneities therefore must reflect inhomogeneities in the spatial distribution of ion channels.
PACS: 87.22.Fy – Active transport processes across biological membranes; intracellular electron transport; energy transduction (including photosynthesis and oxidative phosphorylation) / 87.22.Jb – Muscle contraction, nerve conduction, synaptic transmission, memorization, and other neurophysiological processes (excluding perception processes and speech)
© EDP Sciences, 1996
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