Event-related functional near-infrared spectroscopy (fNIRS): Are the measurements reliable?
Event-related functional near-infrared spectroscopy (fNIRS): Are the measurements reliable?
复制标题
DOI：
10.1016/j.neuroimage.2005.12.008
复制
发表时间：
2006-05-15
期刊：
影响因子：
5.7
通讯作者：
Fallgatter, A. J.
中科院分区：
文献类型：
--
作者：
Plichta, M. M.;Herrmann, M. J.;Fallgatter, A. J.
本研究的目的是探讨事件相关功能近红外光谱（fNIRS）的重测信度。因此，孤立的功能激活引起枕叶皮层的周期性棋盘刺激。在52通道fNIRS记录期间，12名受试者在两个会话中经历了60次视觉刺激试验。复检间隔设定为3周。计算对比度t值的线性相关性，并辅以散点图、通道组内相关系数（ICC）以及激活通道数量（R-QUANTITY）和检测到的激活位置（R-OVERRANCE）的再现性指数。在组水平的结果显示出良好的可靠性，在单测量ICC（高达0.84）和良好的再现性量化的R-QUANTITY和R-OVERRANCE（高达96%的数量和位置是可重复的），而在单个主题的水平的结果是平庸的。此外，单测量ICC评估的可靠性提高，如果在集群水平。(c)2005年爱思唯尔公司All rights reserved.
The purpose of the present study was to investigate the retest reliability of event-related functional near-infrared spectroscopy (fNIRS). Therefore, isolated functional activation was evoked in the occipital cortex by a periodic checkerboard stimulation. During a 52-channel fNIRS recording, 12 subjects underwent 60 trials of visual stimulation in two sessions. The retest interval was set to 3 weeks. Linear correlations of the contrast t values supplemented by scatter plots, channel-wise intraclass correlation coefficients (ICC) as well as reproducibility indices for the quantity of activated channels (R-QUANTITY) and the location (R-OVERLAP) of the detected activation were calculated. The results at the group level showed good reliability in terms of the single measure ICCs (up to 0.84) and excellent reproducibility quantified by R-QUANTITY and R-OVERLAP (up to 96% of the quantity and the location were reproducible), whereas the results at the single subjects' level were mediocre. Furthermore, the reliability assessed by single measurement ICCs improved if regarded at a cluster level. (c) 2005 Elsevier Inc. All rights reserved.