Amplitude of Low Frequency Fluctuations (ALFF) and fractional Amplitude of Low Frequency Fluctuations (f/ALFF) are neuroimaging methods used to measure spontaneous fluctuations in …

Jan 1, 2017 · We calculated the fractional amplitude of low frequency fluctuations (fALFF) in a group of 64 participants scanned 3 months post-stroke. Twenty showed depression symptoms …

Jul 3, 2021 · 本文介绍了任务态fMRI与静息态fMRI的区别，任务态侧重于执行任务时的模型驱动分析，如GLM+HRF，而静息态则更注重数据驱动的特征，如功能连接、ReHo和ALFF。 ReHo …

Nov 1, 2020 · Background: Fractional amplitude of low-frequency fluctuation (fALFF) alterations in young depressed patients with suicide attempts after cognitive behavioral therapy (CBT) and …

Jul 18, 2017 · Measuring the amplitude of low frequency fluctuations allows the detection of spontaneous neural activity across the whole brain. It provides complementary information …

Jul 15, 2008 · The current study proposed a fractional ALFF (fALFF) approach, i.e., the ratio of power spectrum of low-frequency (0.01-0.08 Hz) to that of the entire frequency range and this …

Jan 11, 2017 · The resting-state functional magnetic resonance imaging data were obtained on a Philips 3.0 Tesla scanner and analysed using the fractional amplitude of low frequency …

The fALFF value reflects the intensity of regional neural spontaneous activity; a decrease in fALFF value suggests reduced spontaneous neuronal activity, while an increase indicates potential …

Nov 15, 2022 · Our aim was to analyse the correlation between the fractional amplitude of low-frequency fluctuation (fALFF) and FER ability in FSZ patients.

We aim to characterize fALFF and seed-based FC changes among different types of strokes and healthy control group, and show how to use fALFF values and functional connectivity maps to …

We calculated the fractional amplitude of low frequency fluctuations (fALFF) in a group of 64 participants scanned 3 months post-stroke. Twenty showed depression symptoms when …

Amplitude of Low Frequency Fluctuations (ALFF) and fractional ALFF (fALFF) - Measure the power of slow fluctuations in brain activity. Regional Homogeneity (ReHo) - Measure the …

Sep 7, 2022 · As a resting-state functional magnetic resonance imaging (RS-fMRI) signal, fractional amplitude of low-frequency fluctuation (fALFF), which covers the low-frequency …

Compared to ALFF, fractional ALFF (fALFF) reduces physiological noise interference from intracranial venous sinuses and cerebrospinal fluid, significantly improving the sensitivity and …

The fALFF was developed after the original ALFF index to detect intrinsic spontaneous brain activity with higher sensitivity and specificity. It can provide a more specific measure of low …

Nov 16, 2023 · Fractional ALFF (fALFF) assessment is an advanced technique based on blood oxygen level-dependent (BOLD) fMRI signal intensity of a resting brain. fALFF examinations …

Nov 1, 2020 · Fractional amplitude of low-frequency fluctuation (fALFF) alterations in young depressed patients with suicide attempts after cognitive behavioral therapy (CBT) and …

Dec 3, 2024 · Surface-based ALFF/fALFF in POAG decreased in visual processing regions and increased in brain regions related to cognitive control, working memory, and attention. These …

Jan 1, 2024 · We conducted this resting-state functional magnetic resonance imaging (rsfMRI) study to characterize changes in regional homogeneity (ReHo) or fractional amplitude of low …

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