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

我们的多学科研究的目的是在骨传导（BC）和空气传导（AC）听觉怪异范式中开发认知P300 erp的脑机接口。与以往基于p300的脑机接口系统使用交流听觉怪范式相比，本研究旨在通过任意区分不同频率下的音爆声刺激，探索使用交流听觉怪范式的可能性。离线BCI系统在7名健康受试者中进行了测试。比较标准头戴式耳机与双侧颞骨接触头戴式耳机产生P300 ERPs波的最佳条件。我们的研究结果表明，通过AC和BC听觉刺激可以推断出P300 erp，并有可能将其作为一种指令信号。

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.