masterThesis
Estimulação transcraniana por corrente contínua (ETCC) sobre o córtex motor na modulação autonômica em pessoas com lesão medular com diferentes graus e níveis de lesão
Fecha
2014-12-08Registro en:
SILVA, Fabiana Tenório Gomes da. Estimulação transcraniana por corrente contínua (ETCC) sobre o córtex motor na modulação autonômica em pessoas com lesão medular com diferentes graus e níveis de lesão. 2014. 50f. Dissertação (Mestrado em Educação Física) - Centro de Ciências da Saúde, Universidade Federal do Rio Grande do Norte, Natal, 2014.
Autor
Silva, Fabiana Tenório Gomes da
Resumen
Introduction: Transcranial Direct Current Stimulation (tDCS) has been used in
studies for the treatment of chronic pain, but their effects on the autonomic nervous
system (ANS) are non-existent. Therefore, the need for studies is of fundamental
importance, as these individuals have autonomic imbalance and the intensity of this
is dependent on the degree and level of injury. Objective: We investigated the effect
of tDCS on the ANS in people with spinal cord injury (SCI) with different degrees and
levels of injury. Methods: Randomized, placebo-controlled, double-blind, applied
anodal tDCS or sham on the primary motor cortex (M1), bilaterally. The subjects
(lower incomplete injury, n = 7; lower complete injury, n = 9; and high complete
thoracic injury, n = 3) visited the laboratory three times and received active or sham
tDCS for 13min. The heart rate variability (HRV) was measured before, during and
after stimulation and analyzed the variables LF, HF and LF / HF. Results: The tDCS
modulated the ANS in different ways among the groups. In individuals with SCI high
complete thoracic the tDCS did not change the HRV. However, for individuals with
SCI low incomplete, tDCS changed the HRV in order to increase sympathetic (LF, p
= 0.046) and reduced parasympathetic (HF, p = 0.046). For individuals SCI low
complete to tDCS changed the HRV reduction sympathetic (LF, p = 0.017) and
increased parasympathetic (HF, p = 0.017). Conclusions: The present study
suggests that anodal tDCS applied on the motor cortex bilaterally could modulate the
ANS balance in people with spinal cord injury and that this effect is dependent on the
degree and level of injury.