Department of Radiological Science, Dongseo University, Busan, Korea.
Center for Radiological Environment and Health Science, Dongseo University, Busan, Korea.
Technol Health Care. 2020;28(S1):123-130. doi: 10.3233/THC-209013.
Electroencephalography (EEG) measured during transcranial direct current stimulation (tDCS) can help understand the accurate impact of tDCS on the brain, but this has been hindered due to significant inflow of tDCS-induced electrical artifacts.
In this study, we introduce a novel tDCS device developed based on current limiter, which can prevent the generation of significant electrical artifacts.
To verify the feasibility of our developed tDCS device, we performed simultaneous measurement of EEG during tDCS application with five different current intensities (0, 500, 1,000, 1,500, and 2,000 μA). Changes in EEG power spectral density (PSD) and correlation between the PSD of non-stimulation and tDCS condition were investigated to see whether our tDCS device can be used for simultaneous EEG recording without significant inflow of tDCS-induced electrical artifacts.
The mean EEG-PSD differences between non-stimulation and tDCS condition were not significant for all stimulation current intensities. Furthermore, EEG-PSDs estimated during non-stimulation and tDCS application showed statistically high correlation for all comparison cases.
Based on the results, we could demonstrate the feasibility of our tDCS device based on current limiter for simultaneous EEG measurement, which could potentially provide a way to investigate the impact of tDCS on the brain more accurately.
经颅直流电刺激（tDCS）期间测量的脑电图（EEG）有助于了解 tDCS 对大脑的准确影响，但由于 tDCS 诱导的电伪影大量流入，这一目标受到了阻碍。
在这项研究中，我们引入了一种基于限流器的新型 tDCS 设备，该设备可以防止产生显著的电伪影。
为了验证我们开发的 tDCS 设备的可行性，我们在应用五种不同电流强度（0、500、1000、1500 和 2000μA）的 tDCS 期间同时测量了 EEG。研究了 EEG 功率谱密度（PSD）的变化和非刺激与 tDCS 条件下 PSD 的相关性，以确定我们的 tDCS 设备是否可以在没有 tDCS 诱导的电伪影大量流入的情况下用于同时进行 EEG 记录。
对于所有刺激电流强度，非刺激和 tDCS 条件下的平均 EEG-PSD 差异均不显著。此外，对于所有比较情况，在非刺激和 tDCS 应用期间估计的 EEG-PSD 显示出统计学上的高度相关性。
基于这些结果，我们可以证明基于限流器的我们的 tDCS 设备用于同时进行 EEG 测量的可行性，这可能为更准确地研究 tDCS 对大脑的影响提供一种方法。
