脑力活动期间大脑脱氧血红蛋白和脱氧血红蛋白浓度低频振荡的相位差。

IF 2.3 3区医学 Q2 OPTICS

Journal of Innovative Optical Health Sciences Pub Date : 2011-01-01 DOI:10.1142/S1793545811001332

Angelo Sassaroli, Feng Zheng, Michele Pierro, Peter R Bergethon, Sergio Fantini

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引用次数: 10

摘要

近红外光谱检测到的血流动力学低频(~0.1 Hz)自发振荡在脑激活、脑自动调节和功能连接的研究中具有潜在的应用价值。在这项工作中，我们研究了人类受试者在脑力负荷任务期间大脑脱氧血红蛋白和氧合血红蛋白浓度在0.05-0.10 Hz频率范围内振荡之间的相位滞后。我们已经使用两种不同的方法获得了这种相位滞后的测量:(1)混沌振荡器理论中使用的相位同步分析和(2)一种新的互相关相量方法。这两种方法产生了可比较的初始结果，即脑力工作期间脱氧血红蛋白和脱氧血红蛋白浓度的低频振荡之间的相位滞后较大，相对于对照，休息条件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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PHASE DIFFERENCE BETWEEN LOW-FREQUENCY OSCILLATIONS OF CEREBRAL DEOXY- AND OXY-HEMOGLOBIN CONCENTRATIONS DURING A MENTAL TASK.

Hemodynamic low-frequency (~0.1 Hz) spontaneous oscillations as detected in the brain by near-infrared spectroscopy have potential applications in the study of brain activation, cerebral autoregulation, and functional connectivity. In this work, we have investigated the phase lag between oscillations of cerebral deoxy- and oxy-hemoglobin concentrations in the frequency range 0.05-0.10 Hz in a human subject during a mental workload task. We have obtained a measure of such phase lag using two different methods: (1) phase synchronization analysis as used in the theory of chaotic oscillators and (2) a novel cross-correlation phasor approach. The two methods yielded comparable initial results of a larger phase lag between low-frequency oscillations of deoxy- and oxy-hemoglobin concentrations during mental workload with respect to a control, rest condition.

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来源期刊

Journal of Innovative Optical Health Sciences OPTICS-RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

CiteScore

4.50

自引率

20.00%

发文量

审稿时长

>12 weeks

期刊介绍： JIOHS serves as an international forum for the publication of the latest developments in all areas of photonics in biology and medicine. JIOHS will consider for publication original papers in all disciplines of photonics in biology and medicine, including but not limited to: -Photonic therapeutics and diagnostics- Optical clinical technologies and systems- Tissue optics- Laser-tissue interaction and tissue engineering- Biomedical spectroscopy- Advanced microscopy and imaging- Nanobiophotonics and optical molecular imaging- Multimodal and hybrid biomedical imaging- Micro/nanofabrication- Medical microsystems- Optical coherence tomography- Photodynamic therapy. JIOHS provides a vehicle to help professionals, graduates, engineers, academics and researchers working in the field of intelligent photonics in biology and medicine to disseminate information on the state-of-the-art technique.