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  1. Article

    Open Access

    Precise quantification of the time course of voluntary activation capacity following Botulinum toxin injections in the biceps brachii muscles of chronic stroke survivors

    Spasticity is a key motor impairment that affects many hemispheric stroke survivors. Intramuscular botulinum toxin (BT) injections are used widely to clinically manage spasticity-related symptoms in stroke sur...

    S. Chandra, B. Afsharipour, W. Z. Rymer… in Journal of NeuroEngineering and Rehabilita… (2020)

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  2. No Access

    Chapter and Conference Paper

    Eliminating the Bottleneck of sEMG Recordings: Array Electrodes

    The effects of electrode size, interelectrode distance and grid size are discussed for HDsEMG electrode arrays.

    B. Afsharipour, S. Soedirdjo, R. Merletti in Converging Clinical and Engineering Resear… (2019)

  3. No Access

    Chapter and Conference Paper

    Identifying Spinal Lesion Site from Surface EMG Grid Recordings

    Human spinal cord injuries (SCI) disrupt the pathways between the brain and spinal cord, resulting in substantial impairment and loss of function. We recorded surface electromyogram signals (sEMG) using grids ...

    B. Afsharipour, M. Sandhu, G. Rasool… in Converging Clinical and Engineering Resear… (2017)

  4. No Access

    Chapter and Conference Paper

    Effect of Electrode Size on Amplitude Estimation of HDsEMG Maps

    The purpose of this work is to evaluate the effect of the electrode size on recorded High Density surface electromyography (HDsEMG) maps. We recorded the sEMG signals using a grid of electrodes (16 × 8) placed...

    P. Cattarello, S. D. H. Soedirdjo… in Converging Clinical and Engineering Resear… (2017)

  5. No Access

    Chapter and Conference Paper

    Introduction to EMG for the Study of Movement: From Bipolar to High-Density

    Appropriate inter-electrode distance (IED) is needed to enable the reconstruction of detailed muscle activity and obtain correct map’s features of a High Density surface EMG (HDsEMG). The spatial frequency ban...

    S. D. H. Soedirdjo, B. Afsharipour… in Converging Clinical and Engineering Resear… (2017)

  6. No Access

    Chapter and Conference Paper

    Spatial Aliasing and EMG Amplitude in Time and Space: Simulated Action Potential Maps

    Average Rectified Value (ARV) and Root Mean Square (RMS) are the two amplitude indicators that are commonly used in the field of EMG. These two indicators are compared a) analytically for a one dimensional sin...

    B. Afsharipour, K. Ullah, R. Merletti in XIII Mediterranean Conference on Medical a… (2014)

  7. No Access

    Chapter and Conference Paper

    EMG Topographic Image Enhancement Using Multi Scale Filtering

    Digital image enhancement is the process of adjusting image contrast to facilitate further analysis and extraction of the required features. This study presents a multi-scale, Hessian matrix based filtering, f...

    K. Ullah, B. Afsharipour, R. Merletti in XIII Mediterranean Conference on Medical a… (2014)