An auditory oddball (P300) spelling system for brain-computer interfaces
An auditory oddball (P300) spelling system for brain-computer interfaces
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DOI：
10.1111/j.1469-8986.2008.00783.x
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发表时间：
2009-05-01
期刊：
影响因子：
3.7
通讯作者：
Kuebler, A.
中科院分区：
文献类型：
--
作者：
Furdea, A.;Halder, S.;Kuebler, A.
本研究旨在开发和测试基于听觉事件相关电位（ERP）的脑机接口（BCI）拼写系统，并比较用户在听觉和视觉模态之间的表现。该拼写系统在一组健康志愿者身上进行了测试，其中矩阵中的字母用声音呈现的数字进行编码。结果与视觉拼写系统进行了比较。使用听觉 ERP 拼写系统的 13 名参与者中有 9 名得分高于预定义的沟通标准控制水平。与视觉拼写系统相比，用户的表现较低，听觉诱发的 ERP 的峰值延迟也有所延迟。结论是，大多数用户听觉诱发的 ERP 可以被可靠地分类。这些用户获得了很高的准确度，使得基于听觉刺激的脑机接口的项目选择对于交流来说是可行的。
This study was designed to develop and test an auditory event-related potential (ERP) based spelling system for a brain-computer interface (BCI) and to compare user's performance between the auditory and visual modality. The spelling system, where letters in a matrix were coded with acoustically presented numbers, was tested on a group of healthy volunteers. The results were compared with a visual spelling system. Nine of the 13 participants presented with the auditory ERP spelling system scored above a predefined criterion level control for communication. Compared to the visual spelling system, users' performance was lower and the peak latencies of the auditorily evoked ERPs were delayed. It was concluded that auditorily evoked ERPs from the majority of the users could be reliably classified. High accuracies were achieved in these users, rendering item selection with a BCI based on auditory stimulation feasible for communication.