Cortical excitability and multifidus activation responses to transcranial direct current stimulation in patients with chronic low back pain during remission

Evidence indicates that patients with chronic low back pain (CLBP) have lumbar multifidus muscle (LM) activation deficit which might be caused by changes in cortical excitability. Anodal transcranial direct current stimulation (a-tDCS) can be used to restore cortical excitability. This study aimed t...

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Bibliographic Details
Published in:Scientific reports 2023-09, Vol.13 (1), p.16242-16242, Article 16242
Main Authors: Wattananon, Peemongkon, Thu, Khin Win, Maharjan, Soniya, Sornkaew, Kanphajee, Wang, Hsing-Kuo
Format: Article
Language:English
Subjects:
692/700/228/491
692/700/565/491
Back pain
Electrical stimulation of the brain
ESB
Excitability
Humanities and Social Sciences
Low back pain
Motor evoked potentials
multidisciplinary
Remission
Science
Science (multidisciplinary)
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Summary:Evidence indicates that patients with chronic low back pain (CLBP) have lumbar multifidus muscle (LM) activation deficit which might be caused by changes in cortical excitability. Anodal transcranial direct current stimulation (a-tDCS) can be used to restore cortical excitability. This study aimed to (1) determine the immediate effects of a-tDCS on the cortical excitability and LM activation and (2) explore the relationship between cortical excitability and LM activation. Thirteen participants with CLBP during remission and 11 healthy participants were recruited. Cortical excitability (peak-to-peak motor evoked potential amplitude; P2P and cortical silent period; CSP) and LM activation were measured at pre- and post-intervention. We found significant difference ( P   0.05) in P2P, CSP and LM activation were found between pre- and post-intervention in CLBP. The CLBP group demonstrated significant correlation ( P  = 0.05) between P2P and LM activation. Although our finding demonstrates change in P2P in the CLBP group, one-session of a-tDCS cannot induce changes in cortical excitability and LM activation. However, moderate to strong correlation between P2P and LM activation suggests the involvement of cortical level in LM activation deficit. Therefore, non-significant changes could have been due to inadequate dose of a-tDCS.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-43597-7