On the suitability of near-infrared (NIR) systems for next-generation brain-computer interfaces
On the suitability of near-infrared (NIR) systems for next-generation brain-computer interfaces
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DOI：
10.1088/0967-3334/25/4/003
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发表时间：
2004-08-01
影响因子：
3.2
通讯作者：
McDarby, G
中科院分区：
文献类型：
--
作者：
Coyle, S;Ward, T;McDarby, G
脑机接口（BCI）为那些患有神经肌肉损伤的人提供了与周围环境互动和交流的手段。BCI转换从大脑检测到的生理信号，通常是电信号，以控制输出设备。当前BCI的一个显著问题是熟练使用所涉及的漫长的训练期，这通常会导致用户的沮丧和焦虑。最终，这可能导致器械废弃。其主要原因是，认知功能的相对间接的测量，可以从脑电图（EEG）中收集，被利用。一个更合适和可用的界面需要更直接地测量认知功能。为了做到这一点，需要解决新的测量模式、信号采集和处理以及转换算法。在本文中，我们提出了一种新的方法，使用非侵入性的近红外成像技术来开发一个用户友好的光学脑机接口。作为传统的基于EEG的设备的替代方案，我们使用了实用的非侵入性光学技术来检测由于运动想象引起的特征性血液动力学反应，从而创建了一种易于连接且几乎不需要用户培训的可访问BCI。
A brain-computer interface (BCI) gives those suffering from neuromuscular impairments a means to interact and communicate with their surrounding environment. A BCI translates physiological signals, typically electrical, detected from the brain to control an output device. A significant problem with current BCIs is the lengthy training periods involved for proficient usage, which can often lead to frustration and anxiety on the part of the user. Ultimately this can lead to abandonment of the device. The primary reason for this is that relatively indirect measures of cognitive function, as can be gleaned from the electroencephalogram (EEG), are harnessed. A more suitable and usable interface would need to measure cognitive function more directly. In order to do this, new measurement modalities, signal acquisition and processing, and translation algorithms need to be addressed. In this paper, we propose a novel approach, using non-invasive near-infrared imaging technology to develop a user-friendly optical BCI. As an alternative to the traditional EEG-based devices, we have used practical non-invasive optical techniques to detect characteristic haemodynamic responses due to motor imagery and consequently created an accessible BCI that is simple to attach and requires little user training.