Coherent Detected Periodic Brainwave Computer Control

描述(由申请人提供)：目的是为有严重肌肉控制障碍的用户演示脑波交流。基本的技术方法将是使用周期性脑波的相干检测，利用相干检测系统的能力来拒绝肌肉和随机脑波信号的干扰。免提的数码通电脑控制系统将被用作基本组件。将对软件进行修改，以实现完全相干检测。20名患有严重肌肉控制障碍的受试者将被用来回答以下问题：(I)受试者能否被训练产生周期性信号；(Ii)这些周期性信号的信噪比是否足以做出可靠的两级决策；(Iii)受试者能否被训练来控制这些周期性信号的幅度或频率；以及(Iv)非相干信号的有意识混合能否增强学习周期性信号的产生。这代表了一种革命性的计算机访问方法。用户产生的控制信号将独立于非自愿肌肉活动，这使得该方法对于那些由于非自愿肌肉活动(如痉挛)而没有其他控制方法的人来说，作为一种计算机访问方法具有吸引力。以前被锁定的用户现在可以访问计算机、通信和控制。

DESCRIPTION (provided by applicant): The objective is to demonstrate brainwave communication for users with severe muscle control disabilities. The basic technical approach will be to employ coherent detection of periodic brain waves, taking advantage of the ability of a coherent detection system to reject interference from muscle and random brainwave signals. The hands-free Cyberlink computer control system will be used as the basic building block. Software will be modified to operate with full coherent detection. Twenty subjects with severe muscle control disabilities will be used to answer the following questions: (I) can subjects be trained to generate periodic signals; (ii) is the signal-to-noise ratio of these periodic signals sufficient to allow reliable two-level decisions; (iii) can subjects be trained to control either the amplitude or frequency of these periodic signals and (iv) can the conscious blending of non-coherent signals enhance learning periodic signal generation. This represents a revolutionary approach to computer access. Control signals generated by the user will be independent of involuntary muscle activity making this method attractive as a computer access method for those with no other method of control due to involuntary muscle activity such as spasticity. Users that were previously locked-in, would now have access to computers, communication and control.