相关实验视频

Updated: Jul 1, 2025

Using Fiberless, Wearable fNIRS to Monitor Brain Activity in Real-world Cognitive Tasks

Using Fiberless, Wearable fNIRS to Monitor Brain Activity in Real-world Cognitive Tasks

Published on: December 2, 2015

在氧化和脱氧血红蛋白中明显的时间解析的大脑范围的协同激活

Ali F Khan, Han Yuan, Zachary A Smith

IEEE transactions on bio-medical engineering

|March 13, 2024

概括

脱氧血红蛋白 (HbR) 在休息期间更好地捕捉动态大脑活动,而不是氧化血红蛋白 (HbO). 时间解析分析显示,HbR同激活模式比HbO更有效地反映了整个大脑的神经元动态.

科学领域:

神经科学是一个神经科学.
生物医学工程生物医学工程
生理学生理学生理学

背景情况:

氧化 (HbO) 和脱氧血红蛋白 (HbR) 的静止状态网络 (RSN) 显示了相似之处.
基于任务的研究揭示了不同的HbO和HbR动态,可能是由于时间平均的RSN估计.

研究的目的:

研究HbO和HbR在时间解析的大脑全局协同激活模式 (CAPs) 中的差异.
从HbR和HbO数据中获得的RSN和CAP的特征进行比较.

主要方法:

使用分散光学断层扫描与静止状态功能近红外光谱数据 (HbR和HbO).
应用集团级独立组件分析,用于时间平均的RSN.
在RSN时间课程上对时间解决的CAP进行员工集群.

主要成果:

HbR和HbO RSN的空间模式是相似的.
HbR CAPs表现出比HbO CAPs更有组织的空间和动态特征.
HbR CAPs表明大脑范围的神经动力学超结构,HbO CAPs中不那么明显.

结论:

与HbO相比,时间解析的HbR CAP更好地保护人类休息大脑全神经元激活,而不是HbO.
在时间平均的HbR和HbO RSNs中,这种差异会消失.
HbR波动与休息大脑全神经元动态更直接相关.

更多相关视频

Simultaneous Data Collection of fMRI and fNIRS Measurements Using a Whole-Head Optode Array and Short-Distance Channels

Simultaneous Data Collection of fMRI and fNIRS Measurements Using a Whole-Head Optode Array and Short-Distance Channels

Published on: October 20, 2023

Cerebral Blood Flow-Based Resting State Functional Connectivity of the Human Brain using Optical Diffuse Correlation Spectroscopy

Cerebral Blood Flow-Based Resting State Functional Connectivity of the Human Brain using Optical Diffuse Correlation Spectroscopy

Published on: May 27, 2020

相关概念视频

Magnetic Resonance Imaging

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...

Brain Imaging

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...