Activation detection in functional near-infrared spectroscopy by wavelet coherence

	Activation detection in functional near-infrared spectroscopy by wavelet coherence
	Zhang, Xin1 ; Yu, Jian 2; Zhao, Ruirui 2; Xu, Wenting 2; Niu, Haijing 3; Zhang, Yujin1 ; Zuo, Nianming1,4 ; Jiang, Tianzi1,2,4,5
刊名	JOURNAL OF BIOMEDICAL OPTICS
	2015
卷号	20 期号:1
关键词	functional monitoring and imaging spectroscopy image analysis physiology
英文摘要	Functional 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)
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Biochemical Research Methods ; Optics ; Radiology, Nuclear Medicine & Medical Imaging
研究领域[WOS]	Biochemistry & Molecular Biology ; Optics ; Radiology, Nuclear Medicine & Medical Imaging
关键词[WOS]	GENERAL LINEAR-MODEL ; HEMODYNAMIC-RESPONSES ; AUTOREGRESSIVE MODEL ; TIME-SERIES ; 1/F NOISE ; BRAIN ; FNIRS ; NIRS ; MOTION ; ARTIFACTS
收录类别	SCI
语种	英语
WOS记录号	WOS:000350206400013
公开日期	2015-09-22
内容类型	期刊论文
源URL	[http://ir.ia.ac.cn/handle/173211/8051]
专题	自动化研究所_脑网络组研究中心
作者单位	1.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
推荐引用方式 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).
APA	Zhang, Xin.,Yu, Jian.,Zhao, Ruirui.,Xu, Wenting.,Niu, Haijing.,...&Jiang, Tianzi.(2015).Activation detection in functional near-infrared spectroscopy by wavelet coherence.JOURNAL OF BIOMEDICAL OPTICS,20(1).
MLA	Zhang, Xin,et al."Activation detection in functional near-infrared spectroscopy by wavelet coherence".JOURNAL OF BIOMEDICAL OPTICS 20.1(2015).