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Electrophysiology & Kinesiology

ISEK-JEK Tutorials

ISEK is pleased to announce the novel ISEK- JEK Tutorials, a series of online events starting in Summer 2021. The ISEK- JEK Tutorials are based on tutorial papers published in the Journal of Electrophysiology and Kinesiology (JEK).

They are intended for students to provide technical background on some fundamental topics in Electrophysiology and Kinesiology research, and most importantly, to answer questions that trainees might have on these topics.

Each event in this series will consist of 90 minutes of live presentations and Q&A periods.

ISEK Tutorials will be recorded and available on the website.

There are no fees to participate in the ISEK – JEK Tutorials, but you must register to participate.

Webinar Recording Disclaimer


Please note that webinars are recorded. By your presence at an ISEK webinar, you consent to be photographed, filmed and/or otherwise recorded. Your registration constitutes your consent to such photography, filming and/or recording and to any use for any purpose in accordance with the Society mission and standard of conduct.  You are welcome to keep your camera off during these events, you and not the Society, is responsible for these setting options.

Upcoming Events

–Coming soon

Past Events

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An introduction into the analysis of stabilizing feedback control of walking

Stable gait, defined as gait that does not lead to falls, requires control of the body center of mass relative to the base of support. Model studies suggest that this requires active, feedback control, especially in the mediolateral direction. In older adults and in individuals with neurological or orthopedic disorders that affect walking ability falls during gait are a common cause of injuries, hospitalization and loss of independence. In this tutorial, we will discuss how gait analysis can be used to assess impairments of stabilizing feedback control of gait. We will present methods ranging from those that require limited input data (e.g. position data of markers placed on the feet and pelvis only) and relatively simple analyses to those that require full-body kinematics and musculoskeletal modeling and we will discuss what information on feedback control can be gleaned from each of these.

Presenters

Prof.dr. Jaap van Dieën

Department of Human Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences

Jaap van Dieen is professor biomechanics and head of the department of Human Movement Sciences at the Vrije Universiteit Amsterdam. His research focuses on: 1) Control of posture and gait (with a focus on trunk control): how can control be assessed, what are the determinants of control quality, how is this affected by disorders, and how can it be improved?  2) Low-back loading: how can it be assessed and how can it be reduced? 3) Measurement tools for biomechanical and neurophysiological assessment for application outside the lab. Jaap van Dieën has successfully supervised over 60 PhD students and (co-) authored over 500 papers in international scientific journals. He is currently the editor in chief of the section Biomechanics and Control of Human Movement of Frontiers in Sports and Active Living and serves on several editorial boards

Dr. Maarten Afschrift

Department of Human Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences.

Maarten Afschrift is an assistant professor at the department of Human Movement Sciences at the Vrije Universiteit Amsterdam. His research focuses on: 1) perturbation experiments and simulations to gain insight in human balance control and in the factors that limit balance control in elderly.  2) balance supporting control of wearable robotic devices. 3) Simulations of human movement to predict the effect of mechanical interventions, such as an exoskeleton, on human movement.

Dr. Sjoerd Bruijn

Department of Human Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences.

Sjoerd Bruijn is an associate professor at the department of Human Movement Sciences at the Vrije Universiteit Amsterdam. His research focuses on how most humans can walk on two legs with such remarkable ease, and why pathology and ageing decrease this ability; in short, he studies “human gait stability”. In doing so, he tries to tackle 3 main questions; 1. How can we quantify gait stability properly? 2. How do humans achieve a stable gait pattern (what is the role of passive mechanics, what is the role of control? At which levels in the nervous system does control originate?), and 3. Can we apply the mechanisms we studied in the second question to help people with impaired gait stability? While he usually takes a more fundamental approach to these questions, he often collaborate with clinical partners.

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Surface EMG detection in space and time, conditioning and pre-processing

This webinar is oriented to non-engineers and is based on the first two Tutorials published in the Journal of Electromyography and Kinesiology concerning surface EMG:

Merletti R., Muceli S., Tutorial. Surface EMG detection in space and time: best practices. Journ. of Electromyogr. and Kinesiol., 2019; 49:doi.org/10.1016/j.jelekin.2019.102363

Merletti R., Cerone G.L. Tutorial. Surface EMG detection, conditioning and pre-processing: best  practices, Journ. of Electromyogr. and Kinesiol., 2020;
54 102440, doi:10.1016/j.jelekin.2020.102440

A short introduction describes the barriers to the widespread use of sEMG, as addressed in the Frontiers project https://www.frontiersin.org/research-topics/11157, and the need to overcome them.

The lecture of Dr. Muceli addresses the best practices concerning sEMG electrode geometry and location. The lecture of Dr Cerone addresses the best practices concerning amplification, filtering and conditioning of the raw sEMG signal. Both lectures provide a simple technical bases for proper sEMG detection and recording by clinical operators.

Watch Video

Agenda

Roberto Merletti

  1. The potential of sEMG observation and measurements for rehabilitation operators
  2. The need for teaching rehabilitation operators about sEMG
  3. The results of the Frontiers Project on barriers to clinical use of sEMG
  4. Future perspectives (large HDsEMG systems covering a limb)

Silvia Muceli

  1. The surface EMG image and its sampling with an electrode pair or an electrode grid
  2. The averaging (low pass filtering) effect of the electrode area
  3. The propagation of Motor Unit action potentials
  4. End-of-fiber effect and crosstalk 

Discussion: 10 min

Giacinto Luigi Cerone

  1. The coupling between body-electrodes and biopotential amplifiers. Rejection of power line interference and relevance of Wireless Systems
  2. The importance of skin treatment to lower impedances and artifacts
  3. Conditioning of sEMG signals. Concept of filter (low pass, high pass, notch)
  4. Artifacts in the EMG recoding
  5. Concept of sampling and conversion into binary numbers.

Discussion: 10 min

Presenters

 

Giacinto Luigi Cerone, Ph.D

Laboratory for Engineering of the Neuromuscular System, Dept of Electronics and Telecommunications, Politecnico di Torino, Turin, Italy

Giacinto Luigi Cerone obtained the M.Sc. degree and the Ph.D in Biomedical Engineering summa cum laude from Politecnico di Torino, Torino, Italy, in 2014 and 2019 respectively. Currently he is a Post-Doc Researcher at the Laboratory for Engineering of the Neuromuscular System at Politecnico di Torino. In 2020 he was awarded as Innovative Engineer of the Year by the Turin Engineering Association. His main activity concerns the hardware, firmware, software design and certification of biomedical instrumentation. His research activity with is mainly focused on the design of modular, wireless and embedded systems for the acquisition of electrophysiological signals, the neuromuscular electrical stimulation and the tele-monitoring of vital parameters.

Roberto Merletti, Ph.D., ISEK Fellow

Former Full Prof. of Rehabilitation Engineering, Lab. For Engineering of the Neuromuscular System, Politecnico di Torino, Italy

Prof. Roberto Merletti graduated in Electronics Engineering from Politecnico di Torino, Italy, and obtained his M.Sc. and PhD in Biomedical Engineering from the The Ohio State University, USA.  He has been Associate Prof. of Biomedical Engineering at Boston University where he was also Research Associate at the NeuroMuscular Research Center. He has been Full Prof, of Rehabilitation Engineering at Politecnico di Torino where he established, in 1996, the Laboratory for Engineering of the Neuro-muscular System (LISiN) of which he has been Director up to 2015.  He has trained at LISIN more than 70 researchers (15 doctoral students) from various countries.

Silvia Muceli, Ph.D.

Assistant Professor, Electrical Engineering Chalmers University of Technology, Sweden

Silvia Muceli is Assistant Professor in Life Science Engineering at Chalmers University of Technology, Gothenburg, Sweden. She received her MSc in Electronics Engineering from the University of Cagliari, Italy, in 2007, and PhD in Biomedical Science and Engineering from Aalborg University, Denmark, in 2013. She worked as postdoctoral researcher at the University Medical Center Göttingen, Georg-August University, Germany, and Imperial College London, UK, until 2019. Her main research interests include surface and intramuscular electromyography, biomedical signal processing and modelling, bioelectrode design, neurophysiology of movement, sensorimotor development, and advanced prosthetic control.

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