论文标题
在普通智能手机上运行的移动VR显示与标准PC显示器的比较P300-BCI刺激介绍
A comparison of mobile VR display running on an ordinary smartphone with standard PC display for P300-BCI stimulus presentation
论文作者
论文摘要
基于脑电图（EEG）的脑部计算机界面（BCI）是一项有前途的技术，用于增强游戏中的虚拟现实（VR）应用程序。我们专注于所谓的P300-BCI，这是一种稳定而准确的BCI范式，依靠识别在刺激后大约300毫秒内发生的EEG中发生的与事件相关电位（ERP）的识别。我们实施了这种BCI的基本版本，该版本显示在普通且负担得起的基于智能手机的VR设备上：即移动和被动VR系统（没有智能手机以外的电子组件）。手机执行了刺激表现，脑电图同步（标签）和反馈显示。我们将VR设备上BCI的ERP和BCI的准确性与在个人计算机（PC）上运行的传统BCI进行了比较。我们还评估了主观因素对准确性的影响。这项研究是受试者内部的，每种模式中有21个参与者和一个会话。尽管与PC系统相比，P200 ERP在VR系统中的P200 ERP明显更宽且更大，但PC和VR系统之间的BCI准确性没有显着差异。
A brain-computer interface (BCI) based on electroencephalography (EEG) is a promising technology for enhancing virtual reality (VR) applications-in particular, for gaming. We focus on the so-called P300-BCI, a stable and accurate BCI paradigm relying on the recognition of a positive event-related potential (ERP) occurring in the EEG about 300 ms post-stimulation. We implemented a basic version of such a BCI displayed on an ordinary and affordable smartphone-based head-mounted VR device: that is, a mobile and passive VR system (with no electronic components beyond the smartphone). The mobile phone performed the stimuli presentation, EEG synchronization (tagging) and feedback display. We compared the ERPs and the accuracy of the BCI on the VR device with a traditional BCI running on a personal computer (PC). We also evaluated the impact of subjective factors on the accuracy. The study was within-subjects, with 21 participants and one session in each modality. No significant difference in BCI accuracy was found between the PC and VR systems, although the P200 ERP was significantly wider and larger in the VR system as compared to the PC system.
