Design and implementation of a brain-computer interface with high transfer rates
Design and implementation of a brain-computer interface with high transfer rates
复制标题
DOI：
10.1109/tbme.2002.803536
复制
发表时间：
2002-10-01
影响因子：
4.6
通讯作者：
Xu, DF
中科院分区：
文献类型：
--
作者：
Cheng, M;Gao, XR;Xu, DF
本文介绍了一种帮助用户输入电话号码的脑机接口。该系统基于稳态视觉诱发电位(SSVEP)。12个按钮以不同的速度被照亮，显示在计算机显示器上。这些按钮构成了一个虚拟电话键盘，代表十个数字0-9、退格键和回车键。用户可以通过凝视这些按钮来输入电话号码。频率编码的SSVEP被用来判断用户想要哪个按钮。13名受试者中有8名成功地使用该系统拨打了手机铃声。所有受试者的平均传输速率为27.15比特/分钟。该系统的吸引人的特点是无创的信号记录，使用过程中需要的训练很少，并且信息传输率高。讨论了提高系统性能的途径。
This paper presents a brain-computer interface (BCI) that can help users to input phone numbers. The system is based on the steady-state visual evoked potential (SSVEP). Twelve buttons illuminated at different rates were displayed on a computer monitor. The buttons constituted a virtual telephone keypad, representing the ten digits 0-9, BACKSPACE, and ENTER. Users could input phone number by gazing at these buttons. The frequency-coded SSVEP was used to judge which button the user desired. Eight of the thirteen subjects succeeded in ringing the mobile phone using the system. The average transfer rate over all subjects was 27.15 bits/min. The attractive features of the system are noninvasive signal recording, little training required for use, and high information transfer rate. Approaches to improve the performance of the system are discussed.