A Bidomain Model for Neural Tissue

Bidomain models have most commonly used to simulate cardiac tissue. They have only infrequently been used to model neural tissue as they are often computationally intensive and other modeling techniques such as the core conductor model are more appropriate for studying phenomena such as propagation in neural systems. A bidomain model of an aplysia abdominal ganglion was created using COMSOL Multiphysics and used to estimate the impedance and magnetic flux density perturbations caused by external application of current to the complex. Using this model it was found that magnetic flux density changes due to changes in membrane conductivity were below the noise threshold of a 17 T system, but that it may be possible to detect changes with additional averaging or longer current injection.