Could Anyone Use a BCI?
Could Anyone Use a BCI?
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DOI：
10.1007/978-1-84996-272-8_3
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发表时间：
2010-01-01
期刊：
影响因子：
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通讯作者：
Neuper, Christa
中科院分区：
文献类型：
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作者：
Allison, Brendan Z.;Neuper, Christa
脑机接口（BCI）系统可以为许多用户（但不是所有用户）提供通信和控制。这个问题在不同的 BCI 方法中都存在；适合所有人的“通用”BCI 从未被开发出来。相反，大约 20% 的受试者不精通典型的 BCI 系统。一些团体将这种现象称为“BCI 文盲”。已经探索了一些可能的解决方案，例如改进的信号处理、训练以及新的任务或指令。这些方法并未产生适用于所有用户的 BCI，可能是因为少数用户无法产生特定 BCI 方法所需的可检测的大脑活动模式。我们还讨论了一个未被充分重视的解决方案：切换到不同的 BCI 方法。虽然“BCI 文盲”一词引发了 BCI 和自然语言之间的有趣比较，但许多问题尚不清楚。例如，不同研究之间的比较就存在问题，因为不同的群体使用不同的性能阈值，并且没有考虑试验数量或 BCI 字母表大小等关键因素。我们还讨论了建立广泛使用的术语、定义和测量方法以促进不同群体之间的讨论和比较所固有的挑战。
Brain-computer interface (BCI) systems can provide communication and control for many users, but not all users. This problem exists across different BCI approaches; a "universal" BCI that works for everyone has never been developed. Instead, about 20% of subjects are not proficient with a typical BCI system. Some groups have called this phenomenon "BCI illiteracy". Some possible solutions have been explored, such as improved signal processing, training, and new tasks or instructions. These approaches have not resulted in a BCI that works for all users, probably because a small minority of users cannot produce detectable patterns of brain activity necessary to a particular BCI approach. We also discuss an under-appreciated solution: switching to a different BCI approach. While the term "BCI illiteracy" elicits interesting comparisons between BCIs and natural languages, many issues are unclear. For example, comparisons across different studies have been problematic since different groups use different performance thresholds, and do not account for key factors such as the number of trials or size of the BCI's alphabet. We also discuss challenges inherent in establishing widely used terms, definitions, and measurement approaches to facilitate discussions and comparisons among different groups.