Results 31 to 40 of about 29,753 (243)

Abnormal regional spontaneous neural activity and functional connectivity in thyroid-associated ophthalmopathy patients with different activity: a resting-state fMRI study

Frontiers in Neurology, 2023
PurposeWe aimed to evaluate the spontaneous neuronal activity and functional connectivity pattern variations using resting-state functional magnetic resonance imaging (rs-fMRI) measures, such as amplitude of low-frequency fluctuation (ALFF), fractional ...
Mengda Jiang, Haiyang Zhang, Haiyang Zhang, Yuting Liu, Yuting Liu, Shuo Wu, Shuo Wu, Jialu Qu, Jialu Qu, Yan Tang, Yang Song, Yinwei Li, Yinwei Li, Jing Sun, Jing Sun, Ling Zhu, Huifang Zhou, Huifang Zhou, Xiaofeng Tao   +18 more
doaj   +1 more source

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 ALFF Alterations of Spontaneous Pelvic Pain in the Patients of Chronic Prostatitis/Chronic Pelvic Pain Syndrome Evaluated by fMRI

Brain Sciences, 2022
Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) is a challenging entity with complicated symptoms for treatment in the male crowd. Accumulating evidence revealed the dysfunction in the central system should be a critical factor for the ...
Shengyang Ge, Qingfeng Hu, Guowei Xia, Yifan Tan, Yijun Guo, Chuanyu Sun   +5 more
doaj   +1 more source

Convergent Functional Changes of Default Mode Network in Mild Cognitive Impairment Using Activation Likelihood Estimation

Frontiers in Aging Neuroscience, 2021
Background: Mild cognitive impairment (MCI) represents a transitional state between normal aging and dementia disorders, especially Alzheimer's disease (AD). The disruption of the default mode network (DMN) is often considered to be a potential biomarker
Qianqian Yuan, Wenzhang Qi, Chen Xue, Honglin Ge, Guanjie Hu, Shanshan Chen, Wenwen Xu, Yu Song, XuLian Zhang, Chaoyong Xiao, Chaoyong Xiao, Jiu Chen, Jiu Chen   +12 more
doaj   +1 more source

Altered Dynamic Amplitude of Low-Frequency Fluctuations in Patients With Migraine Without Aura [PDF]

Frontiers in Human Neuroscience, 2021
Migraine is a chronic and idiopathic disorder leading to cognitive and affective problems. However, the neural basis of migraine without aura is still unclear. In this study, dynamic amplitude of low-frequency fluctuations (dALFF) analyses were performed in 21 patients with migraine without aura and 21 gender- and age-matched healthy controls to ...
Hong Chen, Guiqiang Qi, Yingxia Zhang, Ying Huang, Shaojin Zhang, Dongjun Yang, Junwei He, Lan Mu, Lin Zhou, Min Zeng   +9 more
openaire   +3 more sources

Spontaneous Brain Activities in Hyperthyroidism Patients Assessed Using Fractional Amplitude of Low-frequency Fluctuation [PDF]

Zhongguo quanke yixue, 2022
Background Hyperthyroidism is a common endocrine psychosomatic disease, which is often accompanied by negative emotions, seriously affecting the prognosis of patients.
WU Xiaoran, WANG Xiaoyue, GENG Yibo, ZHANG Hongxing, ZHANG Haisan
doaj   +1 more source

Aberrant Amplitude of Low-Frequency Fluctuations in Different Frequency Bands in Patients With Parkinson’s Disease [PDF]

Frontiers in Aging Neuroscience, 2020
Previous studies reported abnormal spontaneous neural activity in Parkinson’s disease (PD) patients using resting-state functional magnetic resonance imaging (R-fMRI). However, the frequency-dependent neural activity in PD is largely unknown. Here, 35 PD patients and 35 age- and education-matched healthy controls (HCs) underwent R-fMRI scanning to ...
Zhaoxiu Wang, Yanjun Liu, Yanjun Liu, Xiuhang Ruan, Yuting Li, E. Li, Guoqin Zhang, Mengyan Li, Xinhua Wei   +8 more
openaire   +3 more sources

Pressure Fluctuation Characteristics Analysis of Centrifugal Pump as Turbine in Its Start-Up Process

Actuators, 2022
In order to study pressure fluctuation characteristics of a centrifugal pump as turbine (PAT) in its start-up process, Fluent was used to do numerical simulation of the PAT start-up process.
Baodui Chai, Junhu Yang, Xiaohui Wang, Bingxiao Jiang   +3 more
doaj   +1 more source

Numerical Study of Unsteady Pressure Fluctuation at Impeller Outlet of a Centrifugal Pump

Science and Technology of Nuclear Installations, 2022
Intense fluid-dynamic interaction at the impeller outlet strongly affects the unsteady flow and pressure stability within the centrifugal pump. In order to have a better understanding of the pressure fluctuation of centrifugal pumps, a numerical ...
Xiaojie Ma, Lulu Zheng, Jinglei Qu, Mengmeng Wang   +3 more
doaj   +1 more source

Resting‐state amplitude of low‐frequency fluctuation is associated with suicidal ideation [PDF]

Depression and Anxiety, 2019
Identifying brain activity patterns that are associated with suicidal ideation (SI) may help to elucidate its pathogenesis and etiology. Suicide poses a significant public health problem, and SI is a risk factor for suicidal behavior.Forty-one unmedicated adult participants in a major depressive episode (MDE), 26 with SI on the Beck Scale for Suicidal ...
Martin J. Lan, Mina M. Rizk, Spiro P. Pantazatos, Harry Rubin‐Falcone, Jeffrey M. Miller, M. Elizabeth Sublette, Maria A. Oquendo, John G. Keilp, J. John Mann   +8 more
openaire   +2 more sources