Communication-assisted technology using a P300-based Brain-ComputerInterface (BCI) by bone-conduction auditory stimulation

本研究的目的是在骨导和气导听觉oddball范式下建立认知P300事件相关电位的脑机接口。与以往基于P300的AC听觉oddball范式脑机接口系统相比，本研究旨在通过对不同频率的短纯音刺激进行任意区分，探讨BC听觉oddball范式的可能性。离线BCI系统在7名健康受试者中进行了测试。用标准耳机进行交流刺激和用耳机与受试者两侧颞骨接触进行BC刺激获得P300 ERPs波的最佳条件是一致的。我们的研究结果表明，这是可能的推断P300的听觉刺激的AC和BC的ERPs的潜力，利用它作为一个命令信号在健康的主题。

The objective of our multi-disciplinary research is to develop BCI for cognitive P300 ERPs in a bone-conduction (BC) and air-conduction (AC) auditory oddball paradigm. Compared to previous P300-based BCI system using AC auditory oddball paradigm, our study aims at the possibility of using BC auditory oddball paradigm by arbitrary distinction of the tone burst sound stimulation at different frequencies. An off-line BCI system was tested in seven healthy subjects. The optimal condition for deriving the P300 ERPs wave by AC stimulation using standard headsets was com pared with BCstimulation using headsets in contact with both sides of the temporal bone in subjects. Our results show that it is possible to deduce P300 ERPs by the AC and BC auditory stimulations with the potential to utilize it as a command signal in the healthy subjects.