Operation of a P300-based brain-computer interface by individuals with cervical spinal cord injury
Operation of a P300-based brain-computer interface by individuals with cervical spinal cord injury
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DOI：
10.1016/j.clinph.2010.08.021
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发表时间：
2011-05-01
影响因子：
4.7
通讯作者：
Kansaku, Kenji
中科院分区：
文献类型：
--
作者：
Ikegami, Shiro;Takano, Kouji;Kansaku, Kenji
目的：本研究评估了基于P300的脑机接口（BCI）与绿色/蓝色闪烁矩阵对颈脊髓损伤（SCI）患者的疗效。10名颈椎脊髓损伤患者（年龄26 - 53岁，均为男性）和10名年龄和性别匹配的健全对照（年龄27 - 52岁，均为男性），要求其输入平假名，（日语字母）字符使用P300 BCI与两种不同类型的视觉刺激，白色/灰色和绿色/蓝色，在一个8 × 10闪烁矩阵。在线和离线performance.Results：SCI主题的平均在线准确率为88.0%的白色/灰色和90.7%的绿色/蓝色闪烁矩阵。对照组受试者对白色/灰色和绿色/蓝色的准确率分别为77.3%和86.0%。两种闪烁矩阵的在线准确性存在显著差异。SCI科目进行更大的准确性比对照组，但主要的影响是不显着的。结论：个人颈椎SCI成功地控制了P300脑机接口，和绿色/蓝色闪烁矩阵与显着更高的准确性比白色/灰色矩阵。重要性：具有绿色/蓝色闪烁矩阵的P300 BCI不仅适用于身体健全的受试者，而且适用于颈椎SCI患者。(C)2010年国际临床神经生理学联合会。由Elsevier爱尔兰有限公司出版。保留所有权利。
Objective: This study evaluates the efficacy of a P300-based brain-computer interface (BCI) with green/blue flicker matrices for individuals with cervical spinal cord injury (SCI).Methods: Ten individuals with cervical SCI (age 26-53, all male) and 10 age-and sex-matched able-bodied controls (age 27-52, all male) with no prior BCI experience were asked to input hiragana (Japanese alphabet) characters using the P300 BCI with two distinct types of visual stimuli, white/gray and green/blue, in an 8 x 10 flicker matrix. Both online and offlines performance were evaluated.Results: The mean online accuracy of the SCI subjects was 88.0% for the white/gray and 90.7% for the green/blue flicker matrices. The accuracy of the control subjects was 77.3% and 86.0% for the white/gray and green/blue, respectively. There was a significant difference in online accuracy between the two types of flicker matrix. SCI subjects performed with greater accuracy than controls, but the main effect was not significant.Conclusions: Individuals with cervical SCI successfully controlled the P300 BCI, and the green/blue flicker matrices were associated with significantly higher accuracy than the white/gray matrices. Significance: The P300 BCI with the green/blue flicker matrices is effective for use not only in able-bodied subjects, but also in individuals with cervical SCI. (C) 2010 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.