Brain Computer Interface Using Modulation of Auditory Steady-State Response with Help of Stochastic Resonance*
Brain Computer Interface Using Modulation of Auditory Steady-State Response with Help of Stochastic Resonance*
复制标题
DOI：
10.1109/embc.2018.8512686
复制
发表时间：
2018-07
期刊：
影响因子：
--
通讯作者：
S. Nishifuji;H. Nakamura;A. Matsubara
中科院分区：
文献类型：
--
作者：
S. Nishifuji;H. Nakamura;A. Matsubara
本文提出了一种眼动无关的脑机接口的基础上的调制的听觉稳态反应（ASSR-BCI）的振幅调制（AM）的音调引起的注意两个AM音调之一的选择性。此外，建议ASSR-BCI利用随机共振效应，以改善信号分离，并达到77%的平均分类准确率在9个正常受试者的噪声添加条件下，声压为60 dB的两个音调和30 dB的噪声添加到两个AM音调。信息传递率及其个体间差异的结果表明，将试验时间长度的试验间隔设置为2 - 3s可能是足够的。因此，通过优化每个用户的试验时间长度和电极位置等参数，可以开发出实用的闭眼状态下的眼动无关BCI。
This paper proposes an eye-movement independent brain computer interface based on the modulations of auditory steady-state response (ASSR-BCI) to amplitude-modulated (AM) tones elicited by paying selective attention to one of the two AM tones. Moreover, the proposed ASSR-BCI exploits a stochastic resonance effect to improve the signal separation and attained the mean classification accuracy of 77 % across nine normal subjects under a noise-added condition with sound pressures 60 dB for the two tones and 30 dB for the noise added to the two AM tones. Results from information transfer rate and its inter-individual difference suggest that it may be adequate to set an inter-trial interval at 2∽3 s for a trial time length. It is consequently feasible to develop a practical eye-movement-independent BCI available in eyes-closed state by optimizing the parameters such as the trial time length and electrode sites each user.