Key Laboratory of Advanced Control and Optimization for Chemical Processes, Ministry of Education, East China University of Science and Technology, Shanghai, China.
Brain-Computer Interfacing and Neural Engineering Laboratory, School of Computer Science and Electronic Engineering, University of Essex, Colchester CO4 3SQ, UK.
Comput Intell Neurosci. 2020 Feb 19;2020:6549189. doi: 10.1155/2020/6549189. eCollection 2020.
. Tactile P300 brain-computer interfaces (BCIs) can be manipulated by users who only need to focus their attention on a single-target stimulus within a stream of tactile stimuli. To date, a multitude of tactile P300 BCIs have been proposed. In this study, our main purpose is to explore and investigate the effects of visual attention on a tactile P300 BCI. We designed a conventional tactile P300 BCI where vibration stimuli were provided by five stimulators and two of them were fixed on target locations on the participant's left and right wrists. Two conditions (one condition with visual attention and the other condition without visual attention) were tested by eleven healthy participants. Our results showed that, when participants visually attended to the location of target stimulus, significantly higher classification accuracies and information transfer rates were obtained (both for < 0.05). Furthermore, participants reported that visually attending to the stimulus made it easier to identify the target stimulus in random sequences of vibration stimuli. . These findings suggest that visual attention has positive effects on both tactile P300 BCI performance and user-evaluation.
. 触觉 P300 脑机接口 (BCI) 可以由只需将注意力集中在一连串触觉刺激中的单个目标刺激上的用户进行操作。迄今为止，已经提出了许多触觉 P300 BCI。在这项研究中，我们的主要目的是探索和研究视觉注意力对触觉 P300 BCI 的影响。我们设计了一种传统的触觉 P300 BCI，其中振动刺激由五个刺激器提供，其中两个固定在参与者左右手腕上的目标位置。由十一位健康参与者测试了两种情况（一种情况有视觉注意力，另一种情况没有视觉注意力）。我们的结果表明，当参与者视觉上关注目标刺激的位置时，分类准确率和信息传输率显著提高（均<0.05）。此外，参与者报告说，视觉上关注刺激使得在随机的振动刺激序列中更容易识别目标刺激。这些发现表明，视觉注意力对触觉 P300 BCI 的性能和用户评估都有积极的影响。
