Results 21 to 30 of about 173,689,056 (279)
Dynamic Changes of Amplitude of Low-Frequency Fluctuations in Patients With Diabetic Retinopathy [PDF]
Frontiers in Neurology, 2021 Background: Growing evidence demonstrate that diabetic retinopathy (DR) patients have a high risk of cognitive decline and exhibit abnormal brain activity. However, neuroimaging studies thus far have focused on static cerebral activity changes in DR patients.
Xin Huang +6 more
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Frontiers in Neuroscience, 2023 IntroductionShort-term spinal cord stimulation (stSCS) is an effective treatment for postherpetic neuralgia (PHN). However, how exactly stSCS affects time-dynamic intrinsic brain activity in PHN patients is not clear.
Chunxiao Bu +10 more
doaj +1 more source
Journal of Integrative Neuroscience, 2021 The spontaneous changes in brain activity in patients with diabetic optic neuropathy using steady-state fMRI. The fractional amplitude of the low-frequency fluctuation method was applied to evaluate neural activity changes.
Yi-Ping Jiang +9 more
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Abnormal spontaneous brain activity in females with autism spectrum disorders
Frontiers in Neuroscience, 2023 ObjectivesTo date, most studies on autism spectrum disorder (ASD) have focused on sample sets that were primarily or entirely composed of males; brain spontaneous activity changes in females remain unclear.
Jiapei Xie +14 more
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The relevance of fractional amplitude of low-frequency fluctuation to interference effect [PDF]
Behavioural Brain Research, 2016 Growing evidence has indicated a potential connection between resting-state functional magnetic resonance imaging (RS-fMRI) signal and cognitive performance. However, the relationship between intrinsic neural activity and behavioral interference effect on cognitive control has been poorly understood. In the present study, seventy-eight healthy subjects
Yuqin, Deng +3 more
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Alterations of dynamic and static brain functional activities and integration in stroke patients
Frontiers in Neuroscience, 2023 ObjectiveThe study aimed to investigate the comprehensive characteristics of brain functional activity and integration in patients with subcortical stroke using dynamic and static analysis methods and to examine whether alterations in brain functional ...
Li Guo +9 more
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Echo Time Dependency of Local Activity Metrics of Resting-State Functional MRI
Frontiers in Neuroscience, 2021 Local activity metrics of resting-state functional MRI (RS-fMRI), such as the amplitude of low-frequency fluctuation (ALFF), fractional ALFF (fALFF), regional homogeneity (ReHo), and degree centrality (DC), are widely used to detect brain abnormalities ...
Li-Xia Yuan +10 more
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Brain functional changes in perimenopausal women: an amplitude of low-frequency fluctuation study. [PDF]
Menopause, 2021 Abstract Objective: To evaluate the effects of sex hormones on amplitude of low-frequency fluctuation (ALFF) in brain regions related to cognition in perimenopausal women. Methods: This cross-sectional study involved 25 perimenopausal women and 25 premenopausal women who ...
Liu N, Zhang Y, Liu S, Zhang X, Liu H.
europepmc +4 more sources
The Influence of the Amplitude of Low-Frequency Fluctuations on Resting-State Functional Connectivity [PDF]
Frontiers in Human Neuroscience, 2013 Studies of brain functional connectivity have provided a better understanding of organization and integration of large-scale brain networks. Functional connectivity using resting-state functional magnetic resonance imaging (fMRI) is typically based upon the correlations of the low-frequency fluctuation of fMRI signals.
Di, Xin +5 more
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Frontiers in Neuroscience, 2022 BackgroundCognitive dysfunction (CI) is frequently reported in patients with systemic lupus erythematosus (SLE), but the identification and assessment of SLE-related CI remain challenging. Previous studies have focused on changes in static brain activity,
Yifan Yang +7 more
doaj +1 more source