Finite Element Modeling for Extracellular Stimulation
Finite element modeling is an important computational tool in neural engineering to simulate neural excitation with implanted electrodes or with surface electrodes. Besides its importance for analyzing artificially generated neural activities, e.g., in the spinal cord (reference to entries “ Finite Element Models of Transcutaneous Spinal Cord Stimulation” and “ Paraspinal Magnetic and Transcutaneous Electrical Stimulation”), this technique is useful to interpret recorded electrical biosignals generated by neural or muscle tissue activities.
Neural signals propagate as transmembrane voltage along neural structures, and thereby they cause plenty of tiny currents in any active region of the nervous system. Our understanding of neural activity by means of electrode recordings, e.g., at the surfaces of the skull (EEG), the cortex (ECoG), or intracortically with microelectrodes, is supported by modeling studies that take care of the electrical properties of...
We wish to acknowledge the support of the Vienna Science and Technology Fund (WWTF), Proj. Nr. LS11-057.
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