Concurrent fNIRS and EEG for Brain Function Investigation: A Systematic, Methodology-Focused Review

Electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS) stand as state-of-the-art techniques for non-invasive functional neuroimaging. On a unimodal basis, EEG has poor spatial resolution while presenting high temporal resolution. In contrast, fNIRS offers better spatial resol...

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Main Authors: Rihui Li, Dalin Yang, Feng Fang, Keum-Shik Hong, Allan L. Reiss, Yingchun Zhang
Format: Article
Language:English
Published: MDPI AG 2022-08-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/22/15/5865
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author Rihui Li
Dalin Yang
Feng Fang
Keum-Shik Hong
Allan L. Reiss
Yingchun Zhang
author_facet Rihui Li
Dalin Yang
Feng Fang
Keum-Shik Hong
Allan L. Reiss
Yingchun Zhang
author_sort Rihui Li
collection DOAJ
description Electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS) stand as state-of-the-art techniques for non-invasive functional neuroimaging. On a unimodal basis, EEG has poor spatial resolution while presenting high temporal resolution. In contrast, fNIRS offers better spatial resolution, though it is constrained by its poor temporal resolution. One important merit shared by the EEG and fNIRS is that both modalities have favorable portability and could be integrated into a compatible experimental setup, providing a compelling ground for the development of a multimodal fNIRS–EEG integration analysis approach. Despite a growing number of studies using concurrent fNIRS-EEG designs reported in recent years, the methodological reference of past studies remains unclear. To fill this knowledge gap, this review critically summarizes the status of analysis methods currently used in concurrent fNIRS–EEG studies, providing an up-to-date overview and guideline for future projects to conduct concurrent fNIRS–EEG studies. A literature search was conducted using PubMed and Web of Science through 31 August 2021. After screening and qualification assessment, 92 studies involving concurrent fNIRS–EEG data recordings and analyses were included in the final methodological review. Specifically, three methodological categories of concurrent fNIRS–EEG data analyses, including EEG-informed fNIRS analyses, fNIRS-informed EEG analyses, and parallel fNIRS–EEG analyses, were identified and explained with detailed description. Finally, we highlighted current challenges and potential directions in concurrent fNIRS–EEG data analyses in future research.
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spelling doaj.art-612b6f7a22d84ed6805804648e7cc8d52023-12-01T23:10:47ZengMDPI AGSensors1424-82202022-08-012215586510.3390/s22155865Concurrent fNIRS and EEG for Brain Function Investigation: A Systematic, Methodology-Focused ReviewRihui Li0Dalin Yang1Feng Fang2Keum-Shik Hong3Allan L. Reiss4Yingchun Zhang5Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA 94305, USASchool of Mechanical Engineering, Pusan National University, Pusan 43241, KoreaDepartment of Biomedical Engineering, University of Houston, Houston, TX 77004, USASchool of Mechanical Engineering, Pusan National University, Pusan 43241, KoreaCenter for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA 94305, USADepartment of Biomedical Engineering, University of Houston, Houston, TX 77004, USAElectroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS) stand as state-of-the-art techniques for non-invasive functional neuroimaging. On a unimodal basis, EEG has poor spatial resolution while presenting high temporal resolution. In contrast, fNIRS offers better spatial resolution, though it is constrained by its poor temporal resolution. One important merit shared by the EEG and fNIRS is that both modalities have favorable portability and could be integrated into a compatible experimental setup, providing a compelling ground for the development of a multimodal fNIRS–EEG integration analysis approach. Despite a growing number of studies using concurrent fNIRS-EEG designs reported in recent years, the methodological reference of past studies remains unclear. To fill this knowledge gap, this review critically summarizes the status of analysis methods currently used in concurrent fNIRS–EEG studies, providing an up-to-date overview and guideline for future projects to conduct concurrent fNIRS–EEG studies. A literature search was conducted using PubMed and Web of Science through 31 August 2021. After screening and qualification assessment, 92 studies involving concurrent fNIRS–EEG data recordings and analyses were included in the final methodological review. Specifically, three methodological categories of concurrent fNIRS–EEG data analyses, including EEG-informed fNIRS analyses, fNIRS-informed EEG analyses, and parallel fNIRS–EEG analyses, were identified and explained with detailed description. Finally, we highlighted current challenges and potential directions in concurrent fNIRS–EEG data analyses in future research.https://www.mdpi.com/1424-8220/22/15/5865EEGfunctional NIRSmultimodal neuroimagingconcurrent recordingintegrated analysis
spellingShingle Rihui Li
Dalin Yang
Feng Fang
Keum-Shik Hong
Allan L. Reiss
Yingchun Zhang
Concurrent fNIRS and EEG for Brain Function Investigation: A Systematic, Methodology-Focused Review
Sensors
EEG
functional NIRS
multimodal neuroimaging
concurrent recording
integrated analysis
title Concurrent fNIRS and EEG for Brain Function Investigation: A Systematic, Methodology-Focused Review
title_full Concurrent fNIRS and EEG for Brain Function Investigation: A Systematic, Methodology-Focused Review
title_fullStr Concurrent fNIRS and EEG for Brain Function Investigation: A Systematic, Methodology-Focused Review
title_full_unstemmed Concurrent fNIRS and EEG for Brain Function Investigation: A Systematic, Methodology-Focused Review
title_short Concurrent fNIRS and EEG for Brain Function Investigation: A Systematic, Methodology-Focused Review
title_sort concurrent fnirs and eeg for brain function investigation a systematic methodology focused review
topic EEG
functional NIRS
multimodal neuroimaging
concurrent recording
integrated analysis
url https://www.mdpi.com/1424-8220/22/15/5865
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AT keumshikhong concurrentfnirsandeegforbrainfunctioninvestigationasystematicmethodologyfocusedreview
AT allanlreiss concurrentfnirsandeegforbrainfunctioninvestigationasystematicmethodologyfocusedreview
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