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Activation detection in functional near-infrared spectroscopy by wavelet coherence
Zhang, Xin1; Yu, Jian2; Zhao, Ruirui2; Xu, Wenting2; Niu, Haijing3; Zhang, Yujin1; Zuo, Nianming1,4; Jiang, Tianzi1,2,4,5; Tianzi Jiang
AbstractFunctional near-infrared spectroscopy (fNIRS) detects hemodynamic responses in the cerebral cortex by transcranial spectroscopy. However, measurements recorded by fNIRS not only consist of the desired hemodynamic response but also consist of a number of physiological noises. Because of these noises, accurately detecting the regions that have an activated hemodynamic response while performing a task is a challenge when analyzing functional activity by fNIRS. In order to better detect the activation, we designed a multiscale analysis based on wavelet coherence. In this method, the experimental paradigm was expressed as a binary signal obtained while either performing or not performing a task. We convolved the signal with the canonical hemodynamic response function to predict a possible response. The wavelet coherence was used to investigate the relationship between the response and the data obtained by fNIRS at each channel. Subsequently, the coherence within a region of interest in the time-frequency domain was summed to evaluate the activation level at each channel. Experiments on both simulated and experimental data demonstrated that the method was effective for detecting activated channels hidden in fNIRS data. (C) 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
KeywordFunctional Monitoring And Imaging Spectroscopy Image Analysis Physiology
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
Indexed BySCI
WOS Research AreaBiochemistry & Molecular Biology ; Optics ; Radiology, Nuclear Medicine & Medical Imaging
WOS SubjectBiochemical Research Methods ; Optics ; Radiology, Nuclear Medicine & Medical Imaging
WOS IDWOS:000350206400013
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Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorTianzi Jiang
Affiliation1.Chinese Acad Sci, Inst Automat, Brainnetome Ctr, Beijing 100190, Peoples R China
2.Univ Elect Sci & Technol China, Sch Life Sci & Technol, Key Lab NeuroInformat, Minist Educ, Chengdu 610054, Peoples R China
3.Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China
4.Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China
5.Univ Queensland, Queensland Brain Inst, Brisbane, Qld 4072, Australia
First Author AffilicationInstitute of Automation, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang, Xin,Yu, Jian,Zhao, Ruirui,et al. Activation detection in functional near-infrared spectroscopy by wavelet coherence[J]. JOURNAL OF BIOMEDICAL OPTICS,2015,20(1):016004.
APA Zhang, Xin.,Yu, Jian.,Zhao, Ruirui.,Xu, Wenting.,Niu, Haijing.,...&Tianzi Jiang.(2015).Activation detection in functional near-infrared spectroscopy by wavelet coherence.JOURNAL OF BIOMEDICAL OPTICS,20(1),016004.
MLA Zhang, Xin,et al."Activation detection in functional near-infrared spectroscopy by wavelet coherence".JOURNAL OF BIOMEDICAL OPTICS 20.1(2015):016004.
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