在多式fMRI研究中,在清醒和NREM睡眠期间大脑和外围的心血管和血管运动脉在多式fMRI研究中
Johanna Tuunanen1,2,3, Heta Helakari1,2,3, Niko Huotari1,2,3
1Department of Diagnostic Radiology, Oulu Functional NeuroImaging (OFNI), Oulu University Hospital, Oulu, Finland.
Frontiers in neuroscience
|October 23, 2024
概括
睡眠会改变大脑和外周脉,增加动脉和静脉系统之间的血管运动波同步,特别是在脑的偏区域. 这表明睡眠期间血管控制和神经流体对流的变化.
科学领域:
- 神经科学是一个神经科学.
- 生理学 生理学 生理学
- 生物医学工程 生物医学工程
背景情况:
- 脑脊液动态受到心血管脉冲和低频血管运动波的影响.
- 超快的功能磁共振成像 (fMRI) 能够独立测量动脉和静脉信号.
研究的目的:
- 为了比较大脑和外周脉在清醒和睡眠状态的相互作用.
- 通过fMRI和光电显微镜来研究睡眠对心血管和血管运动波的影响.
主要方法:
- 在10名健康人群中同时进行fMRI和外围指尖光电显微镜.
- 在清醒和睡眠状态下分析动脉和静脉信号.
主要成果:
- 睡眠增加了大脑心血管脉动功率,但降低了外围脉动功率.
- 血管运动波在睡眠期间显示大脑和外围的功率和同步性增加.
- 睡眠扭转了默认模式网络中大脑和外周血管运动信号之间的滞后,并在偏状区域同步了动脉和静脉信号.
结论:
- 睡眠引起的脉冲功率和同步的变化反映了系统性血管控制的改变.
- 在睡眠期间增加动脉静脉同步可能会增强特定大脑区域的神经流体对流.
相关概念视频
Imaging Studies for Cardiovascular System IV: CMRI
7
Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
7
Sleep-Wake Cycles
1.2K
Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and rapid eye movement (REM).
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
1.2K
Magnetic Resonance Imaging
5.0K
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...
5.0K
Brain Imaging
212
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...
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...
212
Brain Waves
1.1K
Brain waves are electrical signals generated by the neurons in the brain, which are regularly monitored to measure mental activities. Brain waves and their frequency ranges can be measured using an electroencephalogram or EEG. There are four main types of brain waves, each with distinct characteristics:
1.1K


