Can Anodal Transcranial Direct Current Stimulation Increase Steady-State Visual Evoked Potential Responses?
Journal of Korean Medical Science
; : e285-2019.
Artigo
em Inglês
| WPRIM (Pacífico Ocidental)
| ID: wpr-765114
Biblioteca responsável:
WPRO
ABSTRACT
BACKGROUND:
It has been frequently reported that non-negligible numbers of individuals have steady-state visual evoked potential (SSVEP) responses of low signal-to-noise-ratio (SNR) to specific stimulation frequencies, which makes detection of the SSVEP difficult especially in brain–computer interface applications. We investigated whether SSVEP can be modulated by anodal transcranial direct-current stimulation (tDCS) of the visual cortex.METHODS:
Each participant participated in two 20-min experiments—an actual tDCS experiment and a sham tDCS experiment—that were conducted on different days. Two representative electroencephalogram (EEG) features used for the SSVEP detection, SNR and amplitude, were tested for pre- and post-tDCS conditions to observe the effect of the anodal tDCS.RESULTS:
The EEG features were significantly enhanced by the anodal tDCS for the electrodes with low pre-tDCS SNR values, whereas the effect was not significant for electrodes with relatively higher SNR values.CONCLUSION:
Anodal tDCS of the visual cortex may be effective in enhancing the SNR and amplitude of the SSVEP response especially for individuals with low-SNR SSVEP.
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
Córtex Visual
/
Eletrodos
/
Eletroencefalografia
/
Potenciais Evocados Visuais
/
Estimulação Transcraniana por Corrente Contínua
Idioma:
Inglês
Revista:
Journal of Korean Medical Science
Ano de publicação:
2019
Tipo de documento:
Artigo