0107 INCREASED GLOBAL FMRI SIGNAL VARIABILITY AFTER PARTIAL SLEEP DEPRIVATION: FINDINGS FROM THE STOCKHOLM SLEEPY BRAIN STUDY
Sign Up to like & getrecommendations! Published in 2017 at "Sleep"
DOI: 10.1093/sleepj/zsx050.106
Abstract: Introduction: Neural correlates of sleep deprivation are not fully understood and the difference between young and older adults in this regard has received little attention. We aimed to investigate ... read more here.
Keywords: fmri signal; sleep deprivation; deprivation; 0107 increased ... See more keywords
Scale-Free Amplitude Modulation of Low-Frequency Fluctuations in Episodic Migraine.
Sign Up to like & getrecommendations! Published in 2019 at "Pain"
DOI: 10.1097/j.pain.0000000000001619
Abstract: Arrhythmic fluctuations in neural activity occur at many levels of the nervous system. Such activity does not have a characteristic temporal periodicity but can exhibit statistical similarities, most commonly power-law scaling behavior, which is indicative… read more here.
Keywords: fmri signal; episodic migraine; scale free; amplitude ... See more keywords
The voxel-wise analysis of false negative fMRI activation in regions of provoked impaired cerebrovascular reactivity
Sign Up to like & getrecommendations! Published in 2019 at "PLoS ONE"
DOI: 10.1371/journal.pone.0215294
Abstract: Task-evoked Blood-oxygenation-level-dependent (BOLD-fMRI) signal activation is widely used to interrogate eloquence of brain areas. However, data interpretation can be improved, especially in regions with absent BOLD-fMRI signal activation. Absent BOLD-fMRI signal activation may actually represent… read more here.
Keywords: fmri signal; signal activation; bold fmri; activation ... See more keywords
Percent amplitude of fluctuation: A simple measure for resting-state fMRI signal at single voxel level
Sign Up to like & getrecommendations! Published in 2020 at "PLoS ONE"
DOI: 10.1371/journal.pone.0227021
Abstract: The amplitude of low-frequency fluctuation (ALFF) measures resting-state functional magnetic resonance imaging (RS-fMRI) signal of each voxel. However, the unit of blood oxygenation level-dependent (BOLD) signal is arbitrary and hence ALFF is sensitive to the… read more here.
Keywords: fmri signal; voxel; signal; fluctuation ... See more keywords
EEG-fMRI Signal Coupling Is Modulated in Subjects With Mild Cognitive Impairment and Amyloid Deposition
Sign Up to like & getrecommendations! Published in 2021 at "Frontiers in Aging Neuroscience"
DOI: 10.3389/fnagi.2021.631172
Abstract: Cognitive impairment indicates disturbed brain physiology which can be due to various mechanisms including Alzheimer's pathology. Combined functional magnetic resonance imaging (fMRI) and electroencephalography (EEG) recordings (EEG-fMRI) can assess the interplay between complementary measures of… read more here.
Keywords: fmri signal; pathology; cognitive impairment; eeg fmri ... See more keywords