ERP-BASED BRAIN-COMPUTER INTERFACE FOR THE DISABLED

该项目将评估脑机接口的可行性 (BCI)供与计算机通信的残疾人使用。 BCI的运作原理是基于这样一个事实，即罕见的任务- 相关事件出现在所谓的“怪球范式”中，引出 以P300成分为特征的事件相关脑电位。 Farwell和Donchin已经使用了6×6字符矩阵的显示， 它们的行和列是独立和随机的 愈演愈烈。通过在线检测引发 P300，确定了出席细胞的身份。这个项目 将关注新型模式识别的应用 方法，如小波和神经网络，以加快物品识别。 该系统将在5名残疾人身上进行测试。演示 该系统可供残障人士在通讯中使用 每分钟至少10-12个字符的速度，将导致第二阶段 将开发商业版本的BCI的项目。是这样的 BCI将满足以下个人的通信需求： 瘫痪，也可能被证明在限制较少的情况下有用 案子。 拟议的商业应用：辅助剂有很大的市场， 假肢，允许个人与数据进行通信的设备 进入装置。将在这方面进行评估和开发的系统 项目解决了无法从现有资源中获益的用户的需求 系统，因为它们没有电机控制。有一个重要的 建议的BCI的运作模式可能会更多 在使用中比目前使用磁头的常见设备容易处理 安装手杖，或眼球运动，以进行交流。

The project will evaluate the feasibility of a Brain-Computer Interface (BCI) to be used by disabled individuals communicating with a computer. The BCI's principle of operation is based on the fact that rare, task- relevant, events presented in the so called "Oddball Paradigm", elicit an Event-Related Brain Potential characterized by a P300 component. Farwell and Donchin have used a display of a 6 by 6 matrix of characters, the rows and columns of which were independently and randomly intensified. By detecting, online, the matrix elements that elicited a P300, the identity of the attended cell was determined. This project will be concerned with the application of novel pattern recognition methods, such as wavelets and neural networks, to speed item recognition. The system will be tested with 5 disabled individuals. The demonstration that the system can be used by disabled individuals, at a communication speed of at least 10-12 characters per minute, will lead to a Phase II project in which a commercial version of the BCI will be developed. Such a BCI will meet the communication needs of individuals who are thoroughly paralyzed, and may also turn out to be of use in less severely-restricted cases. PROPOSED COMMERCIAL APPLICATION: There is a large market for assistive, prosthetic, devices that allow an individual to communicate with a data entry device. The system that will be evaluated, and developed, in this project addresses the needs of users who cannot benefit from existing systems because they lack motor controls. There is a significant possibility that the operating mode of the proposed BCI will be more tractable in use than are currently common devices that utilize a head mounted stick, or eye movements, to communicate.