Coherent Detected Periodic Brainwave Computer Control

相干检测周期性脑电波计算机控制

• 批准号: 6552372
• 负责人: ANDREW M JUNKER
• 金额: $ 10万
• 依托单位: BRAIN ACTUATED TECHNOLOGIES, INC.
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-30 至 2008-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6552372
• 关键词: assistive device /technology; brain electrical activity; clinical research; communication disorder aid; computer program /software; computer system design /evaluation; electrodes; electroencephalography; human subject; neuromuscular disorder; person with disability; quality of life; sensorimotor system; sensory signal detection; spasm

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.

描述（由申请人提供）：目的是为患有严重肌肉控制障碍的用户演示脑波通信。基本的技术方法将是采用周期性脑电波的相干检测，利用相干检测系统的能力来拒绝来自肌肉和随机脑电波信号的干扰。免提的Cyberlink计算机控制系统将被用作基本的构建块。软件将被修改以进行全相干检测。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：(1)受试者能否被训练产生周期信号；（ii）这些周期信号的信噪比是否足以允许可靠的两电平决策；（iii）是否可以训练受试者控制这些周期信号的幅度或频率，以及（iv）有意识地混合非相干信号是否可以增强学习周期信号的生成。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不随意肌活动，这使得这种方法对于那些由于不随意肌活动（如痉挛）而没有其他控制方法的人来说，是一种有吸引力的计算机访问方法。以前被锁定的用户现在可以使用电脑、通信和控制。