Results 101 to 110 of about 14,679 (138)

Abnormal fractional Amplitude of Low-Frequency Fluctuation in chronic ketamine users.

Psychiatry Research: Neuroimaging, 2022
BACKGROUND Ketamine has become a major substance of abuse worldwide. Nevertheless, The long-term effects of ketamine use on intrinsic spontaneous neural activity remain unknown.
Jun Zhong, Huawang Wu, Fengchun Wu, Hongbo He, Zhaohua Zhang, Jiaxin Huang, Penghui Cao, N. Fan   +7 more
semanticscholar   +3 more sources

Correlation Between the Fractional Amplitude of Low-Frequency Fluctuation and Cognitive Defects in Alzheimer’s Disease

Journal of Alzheimer’s Disease
Background: The fractional amplitude of low-frequency fluctuations (fALFFs) can detect spontaneous brain activity. However, the association between abnormal brain activity and cognitive function, amyloid protein (Aβ), and emotion in Alzheimer’s disease ...
Xuemei Zhang, Jie You, Qun Qao, Xinyang Qi, Jingping Shi, Junrong Li   +5 more
semanticscholar   +3 more sources

Dynamic changes in fractional amplitude of low-frequency fluctuations in patients with chronic insomnia

Frontiers in Neuroscience, 2022
BackgroundPrevious neuroimaging studies have mostly focused on changes in static functional connectivity in patients with chronic insomnia (CI). Features of dynamic brain activity in patients with CI have rarely been described in detail. The present study investigated changes in dynamic intrinsic brain activity in patients with CI by dynamic fractional
Wei Chen, Hui Wang, Hui Wang, Tianze Sun, Qi Wu, Wenxuan Han, Qian Li, Yong Liu, Yuanping Zhou, Xiuyong He   +9 more
exaly   +4 more sources

Fractional amplitude of low-frequency fluctuations (fALFF) in post-stroke depression

NeuroImage: Clinical, 2017
Depression is a common outcome following stroke, associated with reduced quality of life and poorer recovery. Despite attempts to associate depression symptoms with specific lesion sites, the neural basis of post-stroke depression remains poorly understood.
Toby Cumming, Amy Brodtmann, Natalia Egorova-Brumley   +2 more
exaly   +5 more sources

Differentiating Melancholic and Non-melancholic Major Depressive Disorder Using Fractional Amplitude of Low-Frequency Fluctuations [PDF]

Frontiers in Psychiatry, 2022
BackgroundMelancholic major depressive disorder (MDD) is a network-based brain disorder. However, whether or not network-based changes can be applied to differentiate melancholic (MEL) from non-melancholic (NMEL) MDD remains unclear.MethodsThirty-one MEL patients, 28 NMEL patients, and 32 matched healthy controls (HCs) were scanned using resting-state ...
Jingping Zhao, Wenbin Guo, Feng Liu
exaly   +4 more sources

Elevated Fractional Amplitude of Low Frequency Fluctuation Associations with Episodic Migraine Symptomatology

The Journal of Pain
Jack H. Schnieders, Michael Datko, L. Brusaferri, Sarasa Tohyama, Kassandra Round, Lillian D Kinder, Megan R Heffernan, R. Garcia, Randy L. Hirschtick, Eva Ratai, Robert R. Edwards, Bruce Rosen, H. Cheng, Zev Schuman-Olivier, V. Napadow, N. Hadjikhani, Marco L. Loggia   +16 more
semanticscholar   +2 more sources

Fractional amplitude of low-frequency fluctuations is disrupted in Alzheimer’s disease with depression

Clinical Neurophysiology, 2017
To explore brain activity in AD with depression (D-AD) based on fractional amplitude of low-frequency fluctuation (fALFF).Twenty-two D-AD and 21 AD without depression patients (nD-AD) were examined by magnetic resonance imaging during resting state. Neuropsychiatric Inventory and Hamilton Depression Rating Scale were employed to assess the severity of ...
Zhongwei, Guo, Xiaozheng, Liu, Jiapeng, Li, Fuquan, Wei, Hongtao, Hou, Xingli, Chen, Xinwei, Li, Wei, Chen   +7 more
openaire   +2 more sources

Fractional amplitude of low-frequency fluctuations of BOLD signal in schizophrenia

2015 23rd Iranian Conference on Electrical Engineering, 2015
Over 1% of the world population suffer from schizophrenia, which is a mental and hereditary disorder. Diagnosis of this disorder is now based mainly on the clinical symptoms. As the first study in Iran, we used magnetic resonance imaging (MRI) technique to study biomarkers of schizophrenia that are detectable in resting state functional MRI (fMRI).
Afsoon Khodaee, Gholam-Ali Hossein-Zadeh, Esmaeil Shahsavand Ananloo   +2 more
openaire   +1 more source

Fractional amplitude of low-frequency fluctuation (fALFF) alterations in young depressed patients with suicide attempts after cognitive behavioral therapy and antidepressant medication cotherapy: A resting-state fMRI study.

Journal of Affective Disorders, 2020
BACKGROUND Fractional amplitude of low-frequency fluctuation (fALFF) alterations in young depressed patients with suicide attempts after cognitive behavioral therapy (CBT) and antidepressant medication cotherapy were evaluated.
Y. Shu, L. Kuang, Qiankun Huang, Lihui He   +3 more
semanticscholar   +1 more source

Resting‐State fMRI Study of Vigilance Under Circadian and Homeostatic Modulation Based on Fractional Amplitude of Low‐Frequency Fluctuation and Regional Homogeneity in Humans Under Normal Entrained Conditions

Journal of Magnetic Resonance Imaging, 2023
How brain neural activity changes at multiple time points throughout the day and the neural mechanisms underlying time‐dependent modulation of vigilance are less clear.
Hanqi Xing, Zhiwei Wu, Yue Chang, Mengya Ma, Ziyang Song, Yuanqing Liu, Hui Dai   +6 more
semanticscholar   +1 more source