Transcutaneous spinal stimulation in people with and without spinal cord injury: Effect of electrode placement and trains of stimulation on threshold intensity

Autor: Harrison T. Finn, Elizabeth A. Bye, Thomas G. Elphick, Claire L. Boswell‐Ruys, Simon C. Gandevia, Jane E. Butler, Martin E. Héroux
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Physiological Reports, Vol 11, Iss 11, Pp n/a-n/a (2023)
Druh dokumentu: article
ISSN: 2051-817X
DOI: 10.14814/phy2.15692
Popis: Abstract Transcutaneous spinal cord stimulation (TSS) is purported to improve motor function in people after spinal cord injury (SCI). However, several methodology aspects are yet to be explored. We investigated whether stimulation configuration affected the intensity needed to elicit spinally evoked motor responses (sEMR) in four lower limb muscles bilaterally. Also, since stimulation intensity for therapeutic TSS (i.e., trains of stimulation, typically delivered at 15–50 Hz) is sometimes based on the single‐pulse threshold intensity, we compared these two stimulation types. In non‐SCI participants (n = 9) and participants with a SCI (n = 9), three different electrode configurations (cathode–anode); L1‐midline (below the umbilicus), T11‐midline and L1‐ASIS (anterior superior iliac spine; non‐SCI only) were compared for the sEMR threshold intensity using single pulses or trains of stimulation which were recorded in the vastus medialis, medial hamstring, tibialis anterior, medial gastrocnemius muscles. In non‐SCI participants, the L1‐midline configuration showed lower sEMR thresholds compared to T11‐midline (p = 0.002) and L1‐ASIS (p
Databáze: Directory of Open Access Journals
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