Effect of contraction force and knee joint angle on the spatial representation of soleus activity using high-density surface EMG

The meaningful use of surface electromyographic signals (sEMG) is to find an electrode position and orientation in which the sEMG signals can be detected reliably. This becomes more challenging when muscles with pinnate fiber architecture are investigated. In this study, the effects of contraction force and knee inclination on the spatial representation of the soleus muscle activity on the skin surface have been investigated by using two-dimensional electrode grids. Four differently oriented bipolar leads have been calculated to identify not only a proper electrode location but also an adequate orientation of the bipolar lead. Relative measures have been introduced to compare changes in the spatial RMS distribution. It has been shown that in the case of the soleus muscle, bipolar electrodes should be placed on the lateral side. Additionally, the location of the electrodes should be rather proximal than distal, and the orientation of the bipolar lead should be 45° to the lateral side with respect to a line connecting the insertion of the Achilles tendon and the junction between both gastrocnemius heads. Our results have been used to identify adequate electrode locations and orientations in a muscle with such a complex architecture like the soleus muscle. Additionally, new parameters have been introduced, helping to analyze the resulting information about the spatial activation pattern in the soleus muscle

Abstracts of the First International Conference on Advances in Electrical and Computer Engineering 2023

This book presents extended abstracts of the selected contributions to the First International Conference on Advances in Electrical and Computer Engineering (ICAECE'2023), held on 15-16 May 2023 by the Faculty of Science and Technology, Department of Electrical Engineering, University of Echahid Cheikh Larbi Tebessi, Tebessa-Algeria. ICAECE'2023 was delivered in-person and virtually and was open for researchers, engineers, academics, and industrial professionals from around the world interested in new trends and advances in current topics of Electrical and Computer Engineering. Conference Title: First International Conference on Advances in Electrical and Computer Engineering 2023Conference Acronym: ICAECE'2023Conference Date: 15-16 May 2023Conference Venue: University of Echahid Cheikh Larbi Tebessi, Tebessa-AlgeriaConference Organizer: Faculty of Science and Technology, Department of Electrical Engineering, University of Echahid Cheikh Larbi Tebessi, Tebessa-Algeri