Banca de DEFESA: FRANCISCO XAVIER DE BRITO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : FRANCISCO XAVIER DE BRITO
DATA : 07/05/2020
HORA: 08:00
LOCAL: De forma remota (online)
TÍTULO:

INFLUENCES OF ELECTROACUPUNCTURE PARAMETERS ON CORTICAL EXCITABILITY IN HEALTHY INDIVIDUALS

PALAVRAS-CHAVES:

Palavras-chave: Eletroacupuntura, estimulação magnética transcraniana, excitabilidade cortical, frequência de corrente, potencial evocado motor, facilitação intracortical, inibição intracortical curta.

PÁGINAS: 39
GRANDE ÁREA: Ciências da Saúde
ÁREA: Medicina
RESUMO:

There is evidence that electroacupuncture (EA) acts through the modulation of brain activity, but little is known about its influence on the excitability of the primary motor cortex (M1). This study aimed to investigate the influence of EA parameters on the excitability of M1 in healthy individuals. This is a randomized, parallel, double-blind clinical trial that evaluated the influence of an EA intervention using four different combinations of frequency and current amplitude on M1 excitability: at the sensory threshold, it used a frequency of 10 and 100Hz, and at the motor threshold, a frequency of 10 and 100Hz was used in the same way, and as a control (SHAM) the needles without electrical stimulus. The dependent variables were assessed using single-pulse transcranial magnetic
stimulation (TMS) paired with electromyography (EMG), consisting of motor evoked potential (MEP), short intracortical inhibition (SICI) and intracortical facilitation (ICF). These parameters were estimated before and immediately after the intervention with EA. EA increased the excitability of M1 (MEP) compared to SHAM, only when administered at a frequency of 100 Hz, at the sensory level (P <0.05). There were no significant changes in the other measures. It was concluded that EA at the intensity of the sensory threshold and at the frequency of 100 Hz caused an increase in the excitability of M1, and this effect seems to be associated with a decrease in the activity of the intracortical inhibitory mechanisms of the same parameter. 

MEMBROS DA BANCA:
Externo à Instituição - ABRAHAO FONTES BAPTISTA
Externo ao Programa - 287819 - DURVAL CAMPOS KRAYCHETE
Interno - 3140523 - RITA DE CASSIA SALDANHA DE LUCENA