Dr. Vojko Jazbinšek: Biomagnetic and biolectric forward and inverse computations
Povzetek:
Biomagnetic and biolectric forward and inverse computations
Dr. Vojko Jazbinšek, Inštitut za matematiko, fiziko in mehaniko, Ljubljana
Ionic currents in biological organisms produce electric potential differences on the surface and weak, but measurable magnetic fields outside the organism. The biomagnetic and biolectric inverse problem is the search for the unknown internal sources by analysis of the external field data. In order to solve the inverse problem, the solution of the forward problem, i.e. the relation between the current sources and the electric and magnetic fields they generate has to be known. In principle, the full inverse problem is strictly insoluble as there can always exist current distributions which give no external signal. In practice, in order to render the problem soluble, one has to choose appropriate models for the source and the biological object as a conductor.
In this talk I will briefly review the basic mathematical and physical concepts of the forward and inverse problems and discuss several cases from simple experiments on single biological cells to more complex system of the human heart.
