The influence of membrane permeability for ions on cell behaviour in an electric alternating field

S. Despa

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

The behaviour of a cell in an electric alternating field has been investigated, taking into account the field-induced diffusion flows of ions through the membrane. The authors computed the difference in ion concentration between the internal and external sides of the membrane and the transmembrane diffusion potential induced by the external field. The authors also studied the effects of these flows on dielectric properties of a tissue in the radio frequency range. The value of the electric permittivity at low frequencies decreases gradually with the increase of membrane permeability for ions, while the electric permittivity at high frequencies is unchanged. These effects are especially important for analysis of the dielectric spectrum of a tissue or cell suspension which has undergone the influence of various physical or chemical agents, e.g. ionizing radiation or detergents.

Original languageEnglish (US)
Article number001
Pages (from-to)1399-1409
Number of pages11
JournalPhysics in Medicine and Biology
Volume40
Issue number9
DOIs
StatePublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Physics and Astronomy (miscellaneous)
  • Biomedical Engineering

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