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Transcutaneous spinal direct current stimulation (tsDCS) does not affect postural sway of young and healthy subjects during quiet upright standing

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Author(s):
de Lima, Felipe Fava ; Silva, Cristiano Rocha ; Kohn, Andre Fabio
Total Authors: 3
Document type: Journal article
Source: PLoS One; v. 17, n. 4, p. 17-pg., 2022-01-01.
Abstract

Transcutaneous spinal direct current stimulation (tsDCS) is an effective non-invasive spinal cord electrical stimulation technique to induce neuromodulation of local and distal neural circuits of the central nervous system (CNS). Applied to the spinal cord lumbosacral region, tsDCS changes electrophysiological responses of the motor, proprioceptive and nociceptive pathways, alters the performance of some lower limb motor tasks and can even modulate the behavior of supramedullary neuronal networks. In this study an experimental protocol was conducted to verify if tsDCS (5 mA, 20 minutes) of two different polarizations, applied over the lumbosacral region (tenth thoracic vertebrae (T10)), can induce changes in postural sway oscillations of young healthy individuals during quiet standing. A novel initialization of the electrical stimulation was developed to improve subject blinding to the different stimulus conditions including the sham trials. Measures of postural sway, both global and structural, were computed before, during and following the DC stimulation period. The results indicated that, for the adopted conditions, tsDCS did not induce statistically significant changes in postural sway of young healthy individuals during quiet standing. (AU)

FAPESP's process: 16/10614-4 - Effects of transcutaneous spinal direct current stimulation on presynaptic inhibition during control tasks of the ankle joint
Grantee:Cristiano Rocha da Silva
Support Opportunities: Scholarships in Brazil - Post-Doctoral