Can Anodal Transcranial Direct Current Stimulation Increase Steady-State Visual Evoked Potential Responses?
- Title
- Can Anodal Transcranial Direct Current Stimulation Increase Steady-State Visual Evoked Potential Responses?
- Author
- 임창환
- Keywords
- Transcranial Direct Current Stimulation; Electroencephalography; Steady-State Visual Evoked Potential; Primary Visual Cortex
- Issue Date
- 2019-11
- Publisher
- KOREAN ACAD MEDICAL SCIENCES
- Citation
- JOURNAL OF KOREAN MEDICAL SCIENCE, v. 34, no. 43, article no. e285
- 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.
- URI
- https://jkms.org/DOIx.php?id=10.3346/jkms.2019.34.e285https://repository.hanyang.ac.kr/handle/20.500.11754/155605
- ISSN
- 1011-8934; 1598-6357
- DOI
- 10.3346/jkms.2019.34.e285
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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