[1]李东阁. 不同灰度值刺激产生的稳态视觉诱发电位比较[J].中国医学物理学杂志,2019,36(3):340-343.[doi:DOI:10.3969/j.issn.1005-202X.2019.03.019]
 LI Dongge. Comparison of steady-state visual evoked potential produced by stimulations with different grey values[J].Chinese Journal of Medical Physics,2019,36(3):340-343.[doi:DOI:10.3969/j.issn.1005-202X.2019.03.019]
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 不同灰度值刺激产生的稳态视觉诱发电位比较()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
36卷
期数:
2019年第3期
页码:
340-343
栏目:
医学信号处理与医学仪器
出版日期:
2019-03-25

文章信息/Info

Title:
 Comparison of steady-state visual evoked potential produced by stimulations with different grey values
文章编号:
1005-202X(2019)03-0340-04
作者:
 李东阁12
 1.认知科学国家民委重点实验室, 湖北 武汉 430074; 2.医学信息分析及肿瘤诊疗湖北省重点实验室, 湖北 武汉 430074
Author(s):
 LI Dongge12
 1. Key Laboratory of Cognitive Science, State Ethnic Affairs Commission, Wuhan 430074, China; 2. Key Laboratory of Medical Information Analysis and Tumor Diagnosis and Treatment, Wuhan 430074, China
关键词:
稳态视觉诱发电位灰度值典型相关分析
Keywords:
 Keywords: steady-state visual evoked potential grey value canonical correlation analysis
分类号:
TP391.4;R318
DOI:
DOI:10.3969/j.issn.1005-202X.2019.03.019
文献标志码:
A
摘要:
 稳态视觉诱发电位(SSVEP)是大脑对外界光刺激的一种物理反应。本实验从光刺激的物理因素出发,研究不同灰度值刺激对SSVEP频率识别准确率的影响。本实验采用拉普拉斯融合进行空间滤波,并利用典型相关分析法进行频率识别。设置刺激界面背景为白色,改变刺激方块的灰度值,从而分析受试者的频率识别准确率。结果表明灰度值增加,频率识别准确率下降,灰度值为0时,频率识别准确率最高。
Abstract:
 Abstract: The steady-state visual evoked potential (SSVEP) is a kind of physical response of the brain to external light stimulation. Based on the physical factors of light stimulation, the effects of grey values on the accuracy of SSVEP frequency recognition is studied. Herein Laplace fusion is used for spatial filtering and canonical correlation analysis is applied for frequency recognition. With the white background, the grey value of squares is changed to analyze the accuracy of frequency recognition. The results show that the accuracy of frequency recognition decreases with the increase of grey value, and the accuracy of frequency recognition reach the highest when the grey value is 0.

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[1]邓轩,覃玉荣,马永霞.不同认知深度下大脑α波同步变化规律研究[J].中国医学物理学杂志,2021,38(6):737.[doi:DOI:10.3969/j.issn.1005-202X.2021.06.015]
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备注/Memo

备注/Memo:
 【收稿日期】2018-09-08
【作者简介】李东阁,硕士研究生,研究方向:脑-机接口,E-mail: 15827079265@163.com
更新日期/Last Update: 2019-03-26