Calatinus

There are two possible scenarios: monopolar stimulation, where current flows between an electrode in one medium, and an external ground electrode; and bipolar stimulation, where current flows between an electrode in one medium, and another electrode within the same medium. Cochlear implant electrode stimulations are biphasic, with an anodic phase, and a cathodic phase, as to keep the net tissue charge at 0. So I suppose alternating current?

Hello everyone I'm working on a project regarding cochlear implants and tissue conductivity. For this project, I'd like to express how much current reaches a certain tissue when passing different sorts of other tissues. Assume an initial current \(I_0\) passing through \(n\) different tissues with resistivity \(R_n\). Assume each tissue has the same volume. Now, I suppose each time some of the current will reside in the tissue, acting as some sort of capacitor, and some will be passed onto the next tissue? I also assume that current doesn't travel in one direction in a tissue, but is always equally distributed along the tissue volume? For the sake of having an example, assume an electrode emits a voltage of \(1.0\text{ V}\), which passes a first tissue with resistivity of \(1\text{ }\Omega\text{m}\), a second tissue with resistivity of \(0.5\text{ }\Omega\text{m}\), and a third tissue with resistivity of \(2.0\text{ }\Omega\text{m}\). How much current could be passed on theoretically to a tissue further away from the third tissue? Thanks guys! Calatinus

[math]I_0[/math] \(I_0\)