Continuous Control Paradigms for Direct Brain Interfaces

Direct Brain Interfaces (DBIs) offer great possibilities for people with severe disabilities to communicate and control their environments. However, many DBI systems implement discrete selection, such as choosing a letter from an alphabet, which offers limited control over certain tasks. Continuous control is important for applications such as driving a wheelchair or drawing for creative expression. This paper describes two projects currently underway at the Georgia Tech BrainLab exploring continuous control interface paradigms for an EEG-based approach centered on responses from visual cortex, and functional near Infrared (fNIR) imaging of the language center of the brain.

脑机直接接口（DBIs）为重度残疾人士提供了交流以及控制其周围环境的极大可能性。然而，许多脑机直接接口系统采用离散选择，比如从字母表中选择一个字母，这对某些任务的控制能力有限。连续控制对于诸如驾驶轮椅或为了创造性表达而绘画等应用来说是很重要的。本文介绍了佐治亚理工学院脑实验室目前正在进行的两个项目，这两个项目探索了基于脑电图的方法的连续控制接口范式，该方法以视觉皮层的反应以及大脑语言中枢的功能性近红外（fNIR）成像为中心。