Direct Measurement of Specific Membrane Capacitance in Neurons
نویسندگان
چکیده
منابع مشابه
Membrane capacitance measurements revisited: dependence of capacitance value on measurement method in nonisopotential neurons.
During growth or degeneration neuronal surface area can change dramatically. Measurements of membrane protein concentration, as in ion channel or ionic conductance density, are often normalized by membrane capacitance, which is proportional to the surface area, to express changes independently from cell surface variations. Several electrophysiological protocols are used to measure cell capacita...
متن کاملDirect in situ measurement of specific capacitance, monolayer tension, and bilayer tension in a droplet interface bilayer.
Thickness and tension are important physical parameters of model cell membranes. However, traditional methods to measure these quantities require multiple experiments using separate equipment. This work introduces a new multi-step procedure for directly accessing in situ multiple physical properties of droplet interface bilayers (DIB), including specific capacitance (related to thickness), lipi...
متن کاملElectronic Supporting Information Direct in situ measurement of specific capacitance, monolayer tension, and bilayer tension in a droplet interface bilayer
Direct in situ measurement of specific capacitance, monolayer tension, and bilayer tension in a droplet interface bilayer
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In the four previous parts of this series of articles, level measurement using a floating system, using pressure instruments, using radar waves and using ultrasonic waves were discussed. The instruments offered by Indumart company applicable for each method were also recommended. In the final part of this article, level measurement using capacitance, conductivity probes, vibration forks, therma...
متن کاملCapacitance Level Measurement
A capacitor is formed when a level-sensing electrode is installed in a vessel. The metal rod of the electrode acts as one plate of the capacitor and the tank wall (or reference electrode in a non-metallic vessel) acts as the other plate. As the level of the material being measured rises, the air or gas normally surrounding the electrode is displaced by the material’s different dielectric consta...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 2000
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(00)76293-x