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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Is the Frequency in Somatosensory Electrical Stimulation the Key Parameter in Modulating the Corticospinal Excitability of Healthy Volunteers and Stroke Patients with Spasticity?

Texto completo
Autor(es):
Cavalcanti Garcia, Marco Antonio [1, 2, 3] ; Yamasaki Catunda, Joao Marcos [2] ; de Souza, Marcio Nogueira [2] ; Fontana, Ana Paula [4] ; Sperandei, Sandro [5] ; Vargas, Claudia D. [1]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] Univ Fed Rio de Janeiro, Inst Biofis Carlos Chagas Filho, Lab Neurobiol 2, Ave Carlos Chagas Filho 373, CCS, Bloco G, BR-21941902 Rio De Janeiro, RJ - Brazil
[2] Univ Fed Rio de Janeiro, COPPE, Lab Instrumentacao Biomed, Programa Engn Biomed, Ave Horacio Macedo 2030, CT, Bloco H, Sala 327, BR-21941914 Rio De Janeiro, RJ - Brazil
[3] Univ Fed Rio de Janeiro, Dept Biociencias Atividade Fis, Escola Educ Fis & Desportos, Ave Carlos Chagas Filho 540, Cidade Univ, BR-21941599 Rio De Janeiro, RJ - Brazil
[4] Univ Fed Rio de Janeiro, Fac Med, Dept Fisioterapia, Ave Carlos Chagas Filho 373, CCS, Bloco K, BR-21941902 Rio De Janeiro, RJ - Brazil
[5] Fundacao Oswaldo Cruz FIOCRUZ, Inst Comun & Informac Cient & Tecnol Saude ICICT, Ave Brasil 4365, BR-21040900 Manguinho, RJ - Brazil
Número total de Afiliações: 5
Tipo de documento: Artigo Científico
Fonte: NEURAL PLASTICITY; 2016.
Citações Web of Science: 5
Resumo

Somatosensory electrical stimulation (SES) has been proposed as an approach to treat patients with sensory-motor impairment such as spasticity. However, there is still no consensus regarding which would be the adequate SES parameters to treat those deficits. Therefore, the aim of this study was to evaluate the effects of applying SES over the forearm muscles at four different frequencies of stimulation (3, 30, 150, and 300Hz) and in two intervals of time (5' and 30') by means of transcranial magnetic stimulation and Hoffmann's reflex (H-reflex) in healthy volunteers (Experiments I and II). A group of stroke patients (Experiment III) was also preliminary evaluated to ascertain SES effects at a low frequency (3 Hz) applied for 30' over the forearm spastic flexors muscles by measuring the wrist joint passive torque. Motor evoked potentials and the H-reflex were collected from different forearm and hand muscles immediately before and after SES and up to 5' (Experiment I) and 10' (Experiments I and II) later. None of the investigated frequencies of SES was able to operate as a key in switching modulatory effects in the central nervous system of healthy volunteers and stroke patients with spasticity. (AU)

Processo FAPESP: 13/07699-0 - Centro de Pesquisa, Inovação e Difusão em Neuromatemática - NeuroMat
Beneficiário:Jefferson Antonio Galves
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs