title: Assessing vibratory stimulation-induced cortical activity during a motor task--A randomized clinical study.
abstract: Effects of vibratory stimulation on motor performance have been widely investigated. Many theories have been applied, in order to evaluate its influence on individuals; however, very few studies have researched vibratory stimulation-induced cortical behavior. The aim of the present study is to investigate behavioral changes, such as reaction time and index finger movements, as well as electrophysiological changes, using beta band absolute power, in subjects submitted to vibratory stimulation. For this study, 30 healthy subjects were randomly selected and divided into two groups, experimental and control, and were submitted to a right index finger task, before and after vibratory stimulation, which was applied to the right upper limb, while their standard cerebral activity was recorded through electroencephalogram. No significant difference was found among behavioral variables. On the other hand, beta band absolute power significantly increased in the experimental group for the C3, C4 and P4 derivations, while it decreased at P3. The results suggest that electrophysiological changes were induced by vibratory stimulation, while reaction time and task-related movements were not affected by it.
authors.affiliation: Universidade do Vale do Paraíba-UNIVAP, São José dos Campos, SP, Brazil; Endereço: Conjunto Saci Quadra-31 Casa-26, 64020-290 Teresina, PI, Brazil. Electronic address: fisiojanainams@gmail.com.
authors.forename: Janaína
authors.initials: J
authors.lastname: de Moraes Silva
authors.affiliation: Universidade do Vale do Paraíba-UNIVAP, São José dos Campos, SP, Brazil.
authors.forename: Fernanda Pupio Silva
authors.initials: FP
authors.lastname: Lima
authors.affiliation: Instituto Nacional de Pesquisas Espaciais-INPE, São José dos Campos, SP, Brazil.
authors.forename: Alderico Rodrigues
authors.initials: AR
authors.lastname: de Paula Júnior
authors.affiliation: Universidade Federal Do Piauí-UFPI, Parnaíba, PI, Brazil.
authors.forename: Silmar
authors.initials: S
authors.lastname: Teixeira
authors.affiliation: Universidade Federal Do Piauí-UFPI, Parnaíba, PI, Brazil.
authors.forename: Victor Hugo
authors.initials: VH
authors.lastname: do Vale Bastos
authors.affiliation: Universidade Federal Do Piauí-UFPI, Parnaíba, PI, Brazil.
authors.forename: Rayele Pricila Moreira
authors.initials: RP
authors.lastname: dos Santos
authors.affiliation: Universidade Federal do Rio Grande do Sul-UFRS, Porto Alegre, RS, Brazil.
authors.forename: Charlanne
authors.initials: C
authors.lastname: de Oliveira Marques
authors.affiliation: Universidade Federal do Piauí-UFPI, Teresina, PI, Brazil.
authors.forename: Maria
authors.initials: M
authors.lastname: da Conceição Barros Oliveira
authors.affiliation: Faculdade Santo Agostinho, Teresina, PI, Brazil.
authors.forename: Felipe Aurélio Nunes
authors.initials: FA
authors.lastname: de Sousa
authors.affiliation: Universidade do Vale do Paraíba-UNIVAP, São José dos Campos, SP, Brazil.
authors.forename: Mario Oliveira
authors.initials: MO
authors.lastname: Lima
mesh_terms: D000328:Adult; D002540:Cerebral Cortex / Q000502:physiology*; D004569:Electroencephalography; D005260:Female; D005385:Fingers / Q000502:physiology; D006801:Humans; D008297:Male; D009044:Motor Cortex / Q000502:physiology; D009068:Movement / Q000502:physiology*; D010812:Physical Stimulation; D011897:Random Allocation; D011930:Reaction Time; D014732:Vibration; D055815:Young Adult
keywords: Beta band; Electroencephalography; Motor cortex; Somatosensory stimulation; Vibration