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Updated: Jul 27, 2026
05:52
Measuring the Induced Membrane Voltage with Di-8-ANEPPS
Published on: November 20, 2009
[Measurements of electric membrane potentials in lymphocytes]
Acta Biologica Et Medica Germanica
|January 1, 1975
Abstract:
The interior of vital lymphocytes, as opposed to their outer environment, has a negative electric potential (rest potential), the magnitude of which depends on the potassium ion concentration of the extracellular medium. The bioelectric phenomena at the lymphocyte are determined not only by the functional state of the cell membrane, but also by the milieu of the blood cells which includes also the adsorbed proteins and lipids.
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01:21The Resting Membrane Potential
Overview
01:24Resting Membrane Potential
The relative difference in electrical charge, or voltage, between the inside and the outside of a cell membrane, is called the membrane potential. It is generated by differences in permeability of the membrane to various ions and the concentrations of these ions across the membrane.
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01:21Junction Potentials in Galvanic Cells
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01:26Applications of EMF Measurements
Electromotive force (EMF) measurements have a broad range of applications in various fields, including chemistry and physics. The electrochemical series, an arrangement of elements in order of their standard electrode potentials, can be determined through EMF measurements. Elements with lower standard potentials can reduce ions of elements with higher standard potentials.The standard cell potential, E°, allows for the calculation of the standard reaction Gibbs energy, ΔG°, and the equilibrium...