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An efcient GP approach to recognizing cognitive tasks from fnirs neural signals

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Science China(Information Sciences) 2013年第10期56卷 277-283页

作者： AN Jinungn LEE JongHyun AHN ChangWook Robotics Research Division Daegu Gyeongbuk Institute of Science & Technology Department of Computer Engineering Sungkyunkwan University

This paper presents a new genetic programming(GP)approach to accurately classifying cognitive tasks from non-stationary and noisy fnirs neural *** this end,a new GP that efectively handles multiclass problems is *** accordance with multi-tree structure,GP operators are innovated:crossover exchanges every subtree of parents without sufering from any incongruity problem and mutation fne-tunes candidate solutions by a less destructive *** results verifes the efectiveness of the proposed GP classifer over existing references.

关键词： classifcation cognitive task genetic programming fnirs multi-tree representation

Investigate the Visual Merchandising of a Fashion Store Using fnirs 36

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Investigate the Visual Merchandising of a Fashion Store Usin...

The effects of prolonged sitting behavior on resting-state brain functional connectivity in college students post-COVID-19 rehabilitation:A study based on fnirs technology

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作者： Xiaolong Liu Keum-Shik Hong School of Mechanical Engineering Pusan National University Department of Cogno-Mechatronics Engineering Pusan National University

ISBN: (纸本)9781538629185

This study is to examine the possibility of a brain-scientific approach of the fashion-store visual merchandising display（VMD）.In marketing area,VMD has become a research topic of ***,a few VMD research has been done by using human brain *** this work,the hemodynamic responses（HRs） in the prefrontal cortex（PFC） using functional near-infrared spectroscopy were measured from 12 participants while exposing them to four categories（menswear,womenswear,underwear,and sportswear stores with positive and negative picture displays）.As features for classifying the HRs,the lvalue,the peak value of the averaged trial were *** results compare all the HbO responses of positive/negative displays of four *** results showed that the HRs of four categories were *** is concluded that,among four categories,the importance of positive display in VMD is the order of sportswear,menswear,womenswear,and *** finding suggests that the brain signal reaction is involved during the evaluation of VMD that can be related to the judgment of attraction or *** the development of VMD,the brain-scientific approach can be utilized in fashion marketing.

关键词： Visual merchandising brain fnirs t-map feature

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Sports Medicine and Health Science 2024年第3期6卷 287-294页

作者： Xiaocong Yan Ying Qin Haifeng Yu Zhenghao Xue Desheng Jiang Limin Huang Graduate School Harbin Sport UniversityHarbin150008China College of Sports and Human Sciences Harbin Sport UniversityHarbin150008China

Functional near-infrared spectroscopy(fnirs)was used to explore the effects of sedentary behavior on the brain functional connectivity characteristics of college students in the resting state after recovering from Corona Virus Disease 2019(COVID-19).Twenty-two college students with sedentary behavior and 22 college students with sedentary behavior and maintenance of exercise habits were included in the analysis;moreover,8 min fnirs resting-state data were *** on the concentrations of oxyhemoglobin(HbO2)and deoxyhemoglobin(HbR)in the time series,the resting-state functional connection strength of the two groups of subjects,including the prefrontal cortex(PFC)and the lower limb supplementary motor area(LS),as well as the functional activity and functional connections of the primary motor cortex(M1)were *** following findings were demonstrated.(1)Functional connection analysis based on HbO2 demonstrated that in the comparison of the mean functional connection strength of homologous regions of interest(ROIs)between the sedentary group and the exercise group,there was no significant difference in the mean functional strength of the ROIs between the two groups(p>0:05).In the comparison of the mean functional connection strengths of the two groups of heterologous ROIs,the functional connection strengths of the right PFC and the right LS(p?0:0097),the left LS(p?0:0127),and the right M1(p?0:0305)in the sedentary group were significantly *** functional connection strength between the left PFC and the right LS(p?0:0312)and the left LS(p?0:0370)was significantly ***,the functional connection strength between the right LS and the right M1(p?0:0370)and the left LS(p?0:0438)was significantly greater.(2)Functional connection analysis based on HbR demonstrated that there was no significant difference in functional connection strength between the sedentary group and the exercise group(p>0:05)or between the sedentary group and the exerci

关键词： fnirs COVID-19 Sedentary behavior Resting state College students Functional connectivity

左侧额中回参与汉字视觉空间分析的fnirs证据

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心理学报 2023年第5期55卷 685-695,I0001页

作者：陈发坤陈甜蔡文琦王小娟杨剑峰陕西师范大学心理学院西安710062

左侧额中回(MFG)是汉字阅读脑机制研究发现的一个典型脑区,它表现出在汉字阅读中的特异激活,一种普遍的解释认为其负责了汉字独特的视觉空间加工。但是,该解释没有得到直接的证据支持。本研究操纵汉字材料的视觉呈现空间频率,使用功能... 详细信息

左侧额中回(MFG)是汉字阅读脑机制研究发现的一个典型脑区,它表现出在汉字阅读中的特异激活,一种普遍的解释认为其负责了汉字独特的视觉空间加工。但是,该解释没有得到直接的证据支持。本研究操纵汉字材料的视觉呈现空间频率,使用功能性近红外光谱成像(fnirs)技术对此问题进行探讨。通过构建3(字类型:真字、假字和非字)×3(空间频率:完整频谱、低空间频率和高空间频率)的重复测量实验设计,记录被试在完成重复刺激检测的one-back任务时MFG的血氧浓度变化。结果发现左侧MFG表现出显著的字类型主效应,即假字比真字和非字需要更多MFG的激活;而且,左侧MFG还表现出显著的字类型与空间频率的交互作用,即在低空间频率条件下假字比真字和非字具有更强的MFG激活,而在另两种频率条件下并没有发现字类型的显著激活差异。结果表明左侧MFG的确对汉字的空间信息敏感,尤其是在需要更多字形/正字法加工的假字条件下以及对低空间频率信息的加工上都需要更多MFG的激活。研究结果为左侧MFG参与汉字正字法信息的视觉空间加工提供了直接的证据。

关键词：汉字阅读额中回空间频率 fnirs

一种面向运动解码的EEG-fnirs时频特征融合与协同分类方法

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仪器仪表学报 2022年第7期43卷 165-173页

作者：刘晋瑞宋婷舒智林韩建达于宁波南开大学人工智能学院天津300350 南开大学天津市智能机器人技术重点实验室天津300350 南开大学深圳研究院智能技术与机器人系统研究院深圳518083

脑功能成像技术可以反映人体运动时的大脑生理变化,进而解码运动状态,但单模态信号反映的大脑生理信息存在局限性。为此,本文提出了一种基于EEG和fnirs信号的时频特征融合与协同分类方法,利用脑神经电活动和血氧信息的互补特性提高运动... 详细信息

脑功能成像技术可以反映人体运动时的大脑生理变化,进而解码运动状态,但单模态信号反映的大脑生理信息存在局限性。为此,本文提出了一种基于EEG和fnirs信号的时频特征融合与协同分类方法,利用脑神经电活动和血氧信息的互补特性提高运动状态解码精度。首先,提取EEG的小波包能量熵特征,使用双向长短期记忆网络(Bi-LSTM)提取fnirs的时域特征,将两类特征组合得到包含时频域信息的融合特征,实现EEG和fnirs不同层次特征的信息互补。然后,利用1DCNN提取融合特征深层次信息。最后,采用全连接神经网络进行任务分类。将所提方法应用于公开数据集,本文所提的EEG-fnirs信号协同分类方法准确率为95.31%,较单模态分类高7.81%~9.60%。结果表明,该方法充分融合了两互补信号的时频域信息,提高了对左右手握力运动的分类准确率。

关键词： EEG fnirs 时频特征融合协同分类运动解码

基于多脑区注意力机制胶囊融合网络的EEG-fnirs情感识别

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浙江大学学报（工学版） 2024年第11期58卷 2247-2257页

作者：刘悦张雪英陈桂军黄丽霞孙颖太原理工大学电子信息与光学工程学院山西太原030024

为了提高情感识别的准确率,提出多脑区注意力机制和胶囊融合模块的胶囊网络模型(MBA-CFc CapsNet).通过情感视频片段诱发采集EEG-fnirs信号,构建TYUT3.0数据集.提取EEG和f NIRS的特征,将其映射到矩阵,通过多脑区注意力机制融合EEG和fNIR... 详细信息

为了提高情感识别的准确率,提出多脑区注意力机制和胶囊融合模块的胶囊网络模型(MBA-CFc CapsNet).通过情感视频片段诱发采集EEG-fnirs信号,构建TYUT3.0数据集.提取EEG和f NIRS的特征,将其映射到矩阵,通过多脑区注意力机制融合EEG和fnirs的特征,给予不同脑区特征不同的权重,以提取质量更高的初级胶囊.使用胶囊融合模块,减少进入动态路由机制的胶囊数量,减少模型运行的时间.利用MBA-CFc CapsNet模型在TYUT3.0情感数据集上进行实验,与单模态EEG和f NIRS识别结果相比,2种信号结合情感识别的准确率提高了1.53%和14.35%.MBA-CF-cCapsNet模型与原始CapsNet模型相比,平均识别率提高了4.98%,与当前常用的CapsNet情感识别模型相比提高了1%~5%.

关键词：胶囊网络 EEG fnirs 多脑区注意力机制胶囊融合情感识别

Brain Function Diagnosis Enhanced Using Denoised fnirs Raw Signals

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Journal of Biomedical Science and Engineering 2014年第4期7卷 218-227页

作者： Ahmad Chaddad MD Anderson Cancer Center University of Texas Houston USA

Nowadays, brain function evaluation using Functional Near Infrared Spectroscopy (fnirs) is one of the most potential non-invasive monitoring techniques. This paper concerns usefulness of the NIRS signals denoising using the Hemodynamic Evoked Response (HomER) as graphical user interface displays the NIRS data, fast independent component analysis (FASTICA) method to reduce data dimension and the combined Wavelet & PCA method for enhancing NIRS signals. NIRS signals include many types of noise, spread across a broad spectrum of frequencies, such as: low frequency noise from respiratory interference, 0.1 - 0.3 Hz, Mayer wave, about 0.1 Hz, cardiac interference, 0.8 - 2.0 Hz, and other artifacts from head and facial motions. Meanwhile, electronic components generate high frequency noise. Multi-resolution wavelet and PCA was applied successfully to enhance the NIRS signals. It consists of adaptively modifying the wavelet coefficients based on the degree of noise contamination of the processed NIRS signal. This is done subsequently to the signal pre-processing by reducing data dimension using the FASTICA method. We demonstrate, using signal-to-noise ratio and correlation indicators, that the technique used is superior to the wavelet and moving average filter and outperforms the proposed denoising NIRS signal.

关键词： fnirs FASTICA PCA Wavelet

Assessment of Prospective Memory using fnirs in Immersive Virtual Reality Environment

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Journal of Behavioral and Brain Science 2017年第6期7卷 247-258页

作者： Dong Dong Lawrence K.F. Wong Zhiwei Luo School of System Informatics Kobe University Kobe Japan

In order to measure real life prospective memory (PM) ability in laboratory setting, previous studies have used photograph-based, video-based and virtual reality (VR)-based to simulate real life environment. In this study, we used the Functional Near-Infrared Spectroscopy (fnirs) to record participants’ brain activities when they are performing PM tasks in immersive VR environment. 10 participants were asked to perform PM tasks in a virtual environment while wearing a VR headset and an fnirs device. By comparing the hemodynamic changes of rostral prefrontal cortex (BA10) of the PM component and the ongoing component, the result shows that VR PM task can induce the activation of BA10. In addition, by making use of the fnirs technique, this study provides a feasible way to measure BA10 activity in simulated real life environment using immersive VR device.

关键词： Prospective Memory Virtual Reality BA10 fnirs

预期惩罚调节认知控制权衡:来自行为和fnirs的证据

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心理科学 2020年第3期43卷 534-541页

作者：章鹏张琪涵李士一宋璐杨宇白学军教育部人文社会科学重点研究基地天津师范大学心理与行为研究院天津师范大学心理学部天津300387

已有研究发现,奖励使个体偏向主动性控制。然而,目前还不清楚惩罚是如何调节主动性和反应性控制权衡。本研究采用fnirs技术结合AX-CPT范式(AX-continuous performance task paradigm)来探讨该问题。实验中要求被试完成基线条件和惩罚条... 详细信息

已有研究发现,奖励使个体偏向主动性控制。然而,目前还不清楚惩罚是如何调节主动性和反应性控制权衡。本研究采用fnirs技术结合AX-CPT范式(AX-continuous performance task paradigm)来探讨该问题。实验中要求被试完成基线条件和惩罚条件下的AX-CPT任务,即要求被试对线索A后出现的探测刺激X(即70%的AX序列)做靶反应,其余字母序列(AY/BX/BY各占10%)做非靶反应。行为结果发现,与基线条件相比,惩罚条件下AY试次的错误率显著增大;脑成像结果发现,与基线条件相比,惩罚条件下大脑前额叶皮层在线索阶段处于负激活。这说明,惩罚条件下在线索阶段个体投入更多的认知资源来表征线索信息,使个体偏向主动性控制策略。

关键词：惩罚认知控制权衡主动性控制 fnirs