Transient increase in systemic interferences in the superficial layer and its influence on event-related motor tasks: a functional near-infrared spectroscopy study
Transient increase in systemic interferences in the superficial layer and its influence on event-related motor tasks: a functional near-infrared spectroscopy study
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表层系统干扰的短暂增加及其对事件相关运动任务的影响：功能性近红外光谱研究
DOI：
10.1117/1.jbo.22.3.035008
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发表时间：
2017
影响因子：
3.5
通讯作者：
Yasuhiro Wada
中科院分区：
文献类型：
--
作者：
Isao Nambu*;Takuya Ozawa*;Takanori Sato;Takatsugu Aihara;Yusuke Fujiwara;Yohei Otaka;Rieko Osu;Jun Izawa;Yasuhiro Wada
功能近红外光谱(FNIRS)是一种广泛应用于基础神经科学研究和临床研究的神经成像工具。先前的研究表明，任务诱发的全身性伪像主要来自表层组织，可能会妨碍在给定任务期间识别大脑的激活。我们研究了在快速挤压运动过程中，这些伪影对事件相关大脑活动的影响。我们通过应用主成分分析从短源-探测器距离通道(15 Mm)估计任务诱发的浅表组织血流动力学。估计的浅表组织血流动力学表现出与典型的脑血流动力学模型相似的时间分布。重要的是，这种任务诱发的轮廓也在区块设计运动实验的数据中观察到，这表明无论任务设计如何，运动行为后浅表组织血流动力学的一过性增加都会发生。我们还证实，与不使用伪影去除的结果相比，使用15 mm短距离通道的简单浅组织血流动力学伪影去除过程可以改善对事件相关脑血流动力学的估计。因此，我们的结果阐明了与任务设计无关的浅表组织血流动力学特征，并强调了在分析事件相关运动任务期间获得的fNIRS数据时，应用浅表组织血流动力学伪影去除方法的必要性。
Functional near-infrared spectroscopy (fNIRS) is a widely utilized neuroimaging tool in fundamental neuroscience research and clinical investigation. Previous research has revealed that task-evoked systemic artifacts mainly originating from the superficial-tissue may preclude the identification of cerebral activation during a given task. We examined the influence of such artifacts on event-related brain activity during a brisk squeezing movement. We estimated task-evoked superficial-tissue hemodynamics from short source–detector distance channels (15 mm) by applying principal component analysis. The estimated superficial-tissue hemodynamics exhibited temporal profiles similar to the canonical cerebral hemodynamic model. Importantly, this task-evoked profile was also observed in data from a block design motor experiment, suggesting a transient increase in superficial-tissue hemodynamics occurs following motor behavior, irrespective of task design. We also confirmed that estimation of event-related cerebral hemodynamics was improved by a simple superficial-tissue hemodynamic artifact removal process using 15-mm short distance channels, compared to the results when no artifact removal was applied. Thus, our results elucidate task design-independent characteristics of superficial-tissue hemodynamics and highlight the need for the application of superficial-tissue hemodynamic artifact removal methods when analyzing fNIRS data obtained during event-related motor tasks.
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影响因子：
3.4
作者：
Yucel, Meryem A.;Selb, Juliette;Boas, David A.
通讯作者：
Boas, David A.
自愿捏捏任务的运动相关皮层激活：同时监测近红外光谱信号和运动相关皮层电位。
影响因子：
3.5
作者：
Yosuke Sato;M. Fukuda;M. Oishi;Y. Fujii
通讯作者：
Y. Fujii
使用多距离光极从功能性近红外光谱信号中实时去除头皮信号的算法
影响因子：
3.5
作者：
M. Kiguchi;T. Funane
通讯作者：
T. Funane
DOI：
10.1152/ajpregu.00837.2004
发表时间：
2005-06-01
影响因子：
2.8
作者：
Moody, M;Panerai, RB;Potter, JF
通讯作者：
Potter, JF
影响因子：
5.7
作者：
Haeussinger, F. B.;Dresler, T.;Ehlis, A. -C.
通讯作者：
Ehlis, A. -C.