Invited Speakers - Details

Keynote title: Multichannel surface EMG: detection techniques and signal processing
Dr. Corrado Cescon  Dr. Corrado Cescon
Lugano – Switzerland

Keynote Title:  Multichannel surface EMG: detection techniques and signal processing
Abstract: Surface EMG techniques developed considerably in the last twenty years. The methodology is now mature for selected applications in ergonomics, space, sport, and rehabilitation medicine. Multichannel surface EMG signal is rich of information concerning central and peripheral mechanisms of muscle activation, motor unit control strategies, and fatigue. The aim of the course is to provide the basis for EMG detection and signal processing, allowing the audience to learn how to apply multichannel EMG to sport science with a theoretical and practical hands-on session. Details of the workshop: Introduction to the course, presentation of SUPSI and of the research group. Basic principles of surface EMG generation. The volume conductor and the tissue filter. Single fiber potential, motor unit potential, end of fiber effect, travelling and non travelling signal components. Crosstalk. Basic principles of signal processing. Amplitude and frequency parameters of the EMG. Detection modalities and spatial filters. Information content of the EMG signal. Reduction of noise and interference. Amplitude and spectral variables. Global estimates of conduction velocity. Fractal dimension. The relationship between EMG and muscle force. Myoelectric manifestations of muscle fatigue during sustained contractions. Central and peripheral fatigue. Applications in ergonomics, sport, and rehabilitation. Types of electrodes, examples of signals, audio EMG, Spectral and detection features. EMG detection modalities and spatial filters. Needle electrodes, bipolar electrodes, arrays, grids, concentric rings, different geometries. Detection systems available on the market, amplifiers, wireless systems. Acquisition software, introduction to OTBiolab. Practical application. Introduction to multichannel EMG hardware and software. Multichannel EMG detection. Detection of the innervation zone, fiber length, propagating potentials, single MUAPs and estimation of conduction velocity. Skin preparation, application of adhesive arrays. Myoelectric manifestations of muscle fatigue during sustained contractions. Shifts in the position of innervation zone, the fatigue plot.

Brief biography

Corrado Cescon graduated in 2000 in Electronic Engineering at the Polytechnic of Turin, where he also obtained a PhD in Biomedical Engineering in 2005. From 2000 to 2011 collaborated with LISiN (Politecnico di Torino, Italy). From 2007 to 2008 he was post-doc fellow at the Center for Sensory-Motor Interaction (SMI), Aalborg University (Denmark). Since 2011 he is a researcher at SUPSI (Switzerland). His main interests are the development of algorithms for processing biomedical signals and the design of amplifiers and probes for the detection of EMG signals.