基于发音想象的脑机接口的研究综述

A Review on Brain-computer Interface Technologies for Speech Imagery

脑机接口作为患有交流或肢体障碍的病人与机器设备交流沟通的一种技术,近年来在生物医学工程、康复工程等领域受到广泛关注。基于发音想象的脑机接口作为一种新型的脑机接口方式,由于其具有为患有言语障碍的病人提供有效、舒适的言语交流的潜力,其相关研究正在迅速发展。本文首先介绍常见的基于发音想象的脑机接口所用到的信号采集技术,然后详述现有文献中的相关研究内容和信号处理算法,最后讨论基于发音想象的脑机接口存在的问题以及对未来工作进行展望。

As a system to communicate between patients with communication disorders or physically disabilities and machines,brain-computer interface technologies have received widespread attentions in recent years.Meanwhile,as a new type of brain-computer interface,brain-computer interface for speech imagery develops rapidly because of its potential to offer an effective and comfortable communication tool to patients suffering communication disorders.This review paper first introduces common signal acquisition technologies used in existing brain-computer interfaces for speech imagery,and presents in details the signal processing algorithms in speech-imagery-targeted brain-computer interface studies.Finally,some practical considerations and discussions are provided on the existing research problems and future developments of brain-computer interface technologies for speech imagery.