[1]刘畅,覃玉荣,时文健.视听觉刺激下大脑头皮电位空间变化特性[J].中国医学物理学杂志,2018,35(10):1225-1229.[doi:DOI:10.3969/j.issn.1005-202X.2018.010.023]
　LIU Chang,QIN Yurong,SHI Wenjian. Spatial variation characteristics of scalp potentials under audiovisual stimuli[J].Chinese Journal of Medical Physics,2018,35(10):1225-1229.[doi:DOI:10.3969/j.issn.1005-202X.2018.010.023]
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视听觉刺激下大脑头皮电位空间变化特性()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
35卷
期数:
2018年第10期
页码:
1225-1229
栏目:
医学生物物理
出版日期:
2018-10-25

文章信息/Info

Title:
 Spatial variation characteristics of scalp potentials under audiovisual stimuli
文章编号:
1005-202X（2018）10-1225-05
作者:
 刘畅; 覃玉荣 ; 时文健
 广西大学计算机与电子信息学院， 广西 南宁 530004
Author(s):
 LIU Chang;  QIN Yurong;  SHI Wenjian
 College of Computer, Electronic and Information, Guangxi University, Nanning 530004, China
关键词:
 ; 视听觉刺激; 脑机接口; 脑电信号; 空间变化特性
Keywords:
 ; Keywords: audiovisual stimuli;  brain-computer interface;  electroencephalogram signal;  spatial variation characteristics
分类号:
R338.8
DOI:
DOI:10.3969/j.issn.1005-202X.2018.010.023
文献标志码:
A
摘要:
 目的：脑机接口（BCI）技术可以为肢体残障人士提供一种新的交流方式，在医疗康复领域具有很好的应用前景。目前单一视觉刺激的BCI系统难以适用于实际场合中多感觉信息输入的情况，需要进一步了解听觉刺激对视觉诱发电位的影响，为视听混合刺激下的BCI技术研究提供依据。 方法：在闪光刺激为12和42 Hz条件下分别加入12和42 Hz的听觉刺激，研究听觉刺激的加入对视觉刺激下大脑头表额、枕、中央、顶、颞5个空间点脑电功率的影响。 结果：视听脉冲同时刺激条件下，枕区脑电功率最大，其余空间点的功率随测试点到枕区距离的增加而减少；与单一视觉刺激下空间某点的脑电功率相比，听觉刺激的加入对该点脑电功率起增强还是抑制作用，主要取决于该点的空间位置。 结论：研究结果为听觉刺激和视觉刺激在BCI中的整合及多模态脑机接口的研究提供有意义的实验依据。
Abstract:
 Abstract: Objective Brain-computer interface (BCI) technology can provide a new way of communication for people with physical disability, and has a good application prospect in medical rehabilitation. At present, the BCI system with single visual stimuli is difficult to be applied in the practical situation with multisensory information inputs. The effects of auditory stimuli on visual evoked potentials are needed to be further understood, thus providing a basis for the research of BCI technology under mixed audio and visual stimuli. Methods The auditory stimuli of 12 and 42 Hz were added under the conditions of flash stimuli of 12 and 42 Hz, respectively. After adding auditory stimuli under the condition of visual stimuli, the changes of electroencephalogram power at the 5 spatial points of the frontal, occipital, central, apical and temporal regions of the brain were studied. Results Under the simultaneous audiovisual stimulation, the occipital brain power was the largest, and the power of the remaining space points decreased as the increase of distance from the test point to the occipital region. Compared with the brain power at a certain point in the space under a single visual stimulus, whether the brain power was enhanced or suppressed by auditory stimulation added at this point mainly depends on the spatial location of the point. Conclusion The research results provide meaningful experimental basis for the integration of auditory and visual stimuli in BCI and the study of multi-modal BCI.

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备注/Memo

备注/Memo:
 【收稿日期】2018-02-26
【基金项目】国家自然科学基金（61161009）；广西自然科学基金（2016GXNSFAA380068）
【作者简介】刘畅，硕士研究生，研究方向：信息与图像处理，E-mail: 476930550@qq.com
【通信作者】覃玉荣，教授，研究方向：生物医学信号处理、无线通信等，E-mail: qyr111@163.com
更新日期/Last Update: 2018-10-23