Abstract：
This research evaluated the feasibility of a hybrid SSVEP + P300 brain computer interface (BCI) for controlling the movement of an avatar in a virtual reality (VR) gaming environment (VR + BCI). Existing VR + BCI gaming environments have limitations, such as visual fatigue, a lower communication rate, minimum accuracy, and poor system comfort. Hence, there is a need for an optimized hybrid BCI system that can simultaneously evoke the strongest P300 and SSVEP potentials in the cortex.
A BCI headset was coupled with a VR headset to generate a VR + BCI environment. The author developed a VR game in which the avatar\'s movement is controlled using the user\'s cortical responses with the help of a BCI headset. Specifically designed visual stimuli were used in the proposed system to elicit the strongest possible responses from the user\'s brain. The proposed system also includes an auditory feedback mechanism to facilitate precise avatar movement.
Conventional P300 BCI and SSVEP BCI were also used to control the movements of the avatar, and their performance metrics were compared to those of the proposed system. The results demonstrated that the hybrid SSVEP + P300 BCI system was superior to the other systems for controlling avatar movement.
A BCI headset was coupled with a VR headset to generate a VR + BCI environment. The author developed a VR game in which the avatar\'s movement is controlled using the user\'s cortical responses with the help of a BCI headset. Specifically designed visual stimuli were used in the proposed system to elicit the strongest possible responses from the user\'s brain. The proposed system also includes an auditory feedback mechanism to facilitate precise avatar movement.
Conventional P300 BCI and SSVEP BCI were also used to control the movements of the avatar, and their performance metrics were compared to those of the proposed system. The results demonstrated that the hybrid SSVEP + P300 BCI system was superior to the other systems for controlling avatar movement.
摘要：
背景：这项研究评估了混合SSVEP+P300脑机接口（BCI）在虚拟现实（VR）游戏环境（VRBCI）中控制化身运动的可行性。现有的VR+BCI游戏环境有局限性，比如视觉疲劳，较低的通信速率，最低精度，系统舒适度差。因此，需要一种优化的混合BCI系统,其可以同时在皮质中引起最强的P300和SSVEP电位。
方法：将BCI耳机与VR耳机耦合以生成VR+BCI环境。作者开发了一个VR游戏，在BCI耳机的帮助下，使用用户的皮层反应控制化身的移动。在所提出的系统中使用了专门设计的视觉刺激，以引起用户大脑的最强反应。所提出的系统还包括听觉反馈机制以促进精确的化身移动。
结论：常规P300BCI和SSVEPBCI也用于控制化身的运动，并将它们的性能指标与拟议系统的性能指标进行了比较。结果表明，混合SSVEPP300BCI系统在控制化身运动方面优于其他系统。
方法：将BCI耳机与VR耳机耦合以生成VR+BCI环境。作者开发了一个VR游戏，在BCI耳机的帮助下，使用用户的皮层反应控制化身的移动。在所提出的系统中使用了专门设计的视觉刺激，以引起用户大脑的最强反应。所提出的系统还包括听觉反馈机制以促进精确的化身移动。
结论：常规P300BCI和SSVEPBCI也用于控制化身的运动，并将它们的性能指标与拟议系统的性能指标进行了比较。结果表明，混合SSVEPP300BCI系统在控制化身运动方面优于其他系统。
