Effect of Stimulation Type on Auditory Steady-State Response
Wang Jinhai1, Jia Yaru1,2, Chen Xiaogang2*, Wang Yao1, Li Kun1,2, Meng Jia1,2
1School of Electronic and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China; 2Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
Abstract：Auditory steady state response (ASSR) is an electroencephalography (EEG) potential elicited by the periodic auditory stimuli, which can be used for building auditory brain-computer interface (BCI). In order to build efficient ASSR-based BCIs, it is necessary to seek a stimulation type to evoke stronger ASSR. In this work the canonical correlation analysis (CCA) was used to compare the ASSRs from 14 healthy subjects evoked by click, sinusoidal amplitude modulation (SAM), and white noise. Results indicated that the three stimulation types could evoke stable ASSR, and the strongest ASSR was mainly concentrated in frontal-central area. The strength of ASSR was depended on stimulation type. The strongest ASSR was obtained by the click stimuli. The second one and the weakest ASSR were corresponding to the white noise stimuli and SAM stimuli respectively. Using CCA to classify the left and right ears for the three stimulation types, we found out that the click stimuli induced the highest information transfer rate (ITR), which was 6.69 bits/min; the second one and the weakest ITR were corresponding to the white noise stimuli and SAM stimuli, which was 1.65 bits/min and 0.76 bits/min respectively. These results indicated that click stimuli was suitable for building high-speed BCI systems.
王金海, 贾亚茹, 陈小刚, 王瑶, 李坤, 孟佳. 刺激类型对听觉稳态响应的影响[J]. 中国生物医学工程学报, 2019, 38(1): 44-50.
Wang Jinhai, Jia Yaru, Chen Xiaogang, Wang Yao, Li Kun, Meng Jia. Effect of Stimulation Type on Auditory Steady-State Response. Chinese Journal of Biomedical Engineering, 2019, 38(1): 44-50.
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