Introduction: Electrical impedance tomography (EIT) is a non-invasive technique utilized in various medical applications, including brain imaging and other neurological diseases. Recognizing the physiological and anatomical characteristics of organs based on their electrical properties is one of the main applications of EIT, as each variety of tissue structure has its own electrical characteris...

In fifty-seven resting nerve fibers of the squid Sepioteuthis sepioidea impaled from outside to inside, three potential difference (PD) levels were recorded. In twelve nerve fibers the position of the tip of the micropipette, when it was recording one of the PD levels, was labeled with carmine, and the minute spot of dye was localized histologically. The first PD level of -10 to -26 mv, was loc...

The effects on the Schwann cell electrical potential of external ionic concentrations and of K-strophanthoside were investigated. Increasing (K)(o) depolarized the cell. The potential is related to the logarithm of (K)(o) in a quasi-linear fashion. The linear portion of the curve has a slope of 45 mv/ten-fold change in (K)(o). Diminutions of (Na)(o) and (Cl)(o) produced only small variations in...

We demonstrate a new type of transistors, the electrical/optical "dual-function redox-potential transistors", which is solution processable and environmentally stable. This device consists of vertically staked electrodes that act as gate, emitter and collector. It can perform as a normal transistor, whilst one electrode which is sensitised by dye enables to generate photocurrent when illuminate...

• Over the past decade, several types of experiments characterizing the electrical properties of blood vessels have been carried out.' 2 Some of these experiments were done to determine the possible existence, magnitude, and polarity of the normal potential difference across the aortic and vena caval wall using in vivo and in vitro preparations." The first group of experiments was done in the l...

A model describing the electric double layers in clay-electrolyte systems containing particles with different surface charge densities was developed and used to calculate the film thickness of water present in a clay paste. The average water film thicknesses (-18/~) calculated by considering the clay to contain 9 groups of particles of different charge densities did not differ from those calcul...

We measured the intracellular electrical potential in oocyte and nurse cells of Drosophila follicles at different developmental stages (6-14) and determined the intrafollicular potential difference. During stages 8-10B, when intrafollicular transport is known to occur, no significant potential difference was found. During late vitellogenic stages the nurse cells assume a more positive potential...

A molecular film of pulmonary surfactant covers the hydrated lung epithelium to the air. We recently showed that the film exhibits a locally strongly variable electrical surface potential of up to several hundred millivolts. The potential arises from aligned molecular dipoles of the molecules. In the case of the complex structural organization of the phase-separated film of pulmonary surfactant...