Dr. Todd Freeborn: Tissue Bioimpedance Collection, Processing, and Health Applications @TSP21

Associate Professor Todd Freeborn (Department of Electrical and Computer Engineering, The University of Alabama, USA) Abstract: The passive electrical impedance of biological tissues, referred to as tissue bioimpedance, is being widely investigated as a technique to identify physiological features in support of health focused applications. This type of measurement is related to the underlying tissue fluid, tissue type, and tissue geometry. As such, changes in these features are expected to alter the impedance and serve as an indicator of that underlying mechanism of change (e.g. fluid shift, tissue damage, tissue swelling). It is this potential that drives continued research focused on bioimpedance applications for patient monitoring and identification of physiological changes over time. This talk will provide an overview of bioimpedance research that explores health-focused applications, methods of measurements, and approaches to processing this data. Particular attention will be given to recent efforts at the University of Alabama to utilize fractional-order circuit models to represent tissue bioimpedance, identifying markers relevant to fatigue and injury monitoring, and developing wearable systems for bioimpedance data-collection.