نتایج جستجو برای: multiple sclerosis fmri alff

تعداد نتایج: 819476  

2015
Jianfang Zhu Yuanyuan Jin Kai Wang Yumiao Zhou Yue Feng Maihong Yu Xiaoqing Jin

Resting-state functional magnetic resonance imaging (R-fMRI) has been intensively used to assess alterations of inter-regional functional connectivity in patients with stroke, but the regional properties of brain activity in stroke have not yet been fully investigated. Additionally, no study has examined a frequency effect on such regional properties in stroke patients, although this effect has...

Journal: :Journal of neuroscience methods 2008
Qi-Hong Zou Chao-Zhe Zhu Yihong Yang Xi-Nian Zuo Xiang-Yu Long Qing-Jiu Cao Yu-Feng Wang Yu-Feng Zang

Most of the resting-state functional magnetic resonance imaging (fMRI) studies demonstrated the correlations between spatially distinct brain areas from the perspective of functional connectivity or functional integration. The functional connectivity approaches do not directly provide information of the amplitude of brain activity of each brain region within a network. Alternatively, an index n...

2015
Yingying Yue Xize Jia Zhenghua Hou Yufeng Zang Yonggui Yuan

There is limited amplitude of low-frequency fluctuation (ALFF) of resting-state functional magnetic resonance imaging (fMRI) studies in late-onset depression (LOD) but reported different results. This may be due to the impact of different frequency bands. In this study, we examined the ALFF in five different frequency bands (slow-6: 0-0.01 Hz; slow-5: 0.01-0.027 Hz; slow-4: 0.027-0.073 Hz; slow...

2017
Rongchuan Cheng Honglin Qi Yong Liu Shifu Zhao Chuanming Li Chen Liu Jian Zheng

INTRODUCTION This study aimed to investigate the cerebral function deficits in patients with leukoaraiosis (LA) and the correlation with white matter hyperintensity (WMH) using functional MRI (fMRI) technology. MATERIALS AND METHODS Twenty-eight patients with LA and 30 volunteers were enrolled in this study. All patients underwent structural MRI and resting-state functional MRI (rs-fMRI) scan...

2018
Yu-Chen Chen Huiyou Chen Liang Jiang Fan Bo Jin-Jing Xu Cun-Nan Mao Richard Salvi Xindao Yin Guangming Lu Jian-Ping Gu

Purpose: Presbycusis, age-related hearing loss, is believed to involve neural changes in the central nervous system, which is associated with an increased risk of cognitive impairment. The goal of this study was to determine if presbycusis disrupted spontaneous neural activity in specific brain areas involved in auditory processing, attention and cognitive function using resting-state functiona...

Journal: :Frontiers in Neuroscience 2023

Objectives To date, most studies on autism spectrum disorder (ASD) have focused sample sets that were primarily or entirely composed of males; brain spontaneous activity changes in females remain unclear. The purpose this study was to explore the neural with ASD. Methods In study, resting-state functional magnetic resonance images (rs-fMRI) 41 ASD and typically developing (TD) controls obtained...

2016
Xiaojia Liu Wenshu Qian Richu Jin Xiang Li Keith DK Luk Ed. X. Wu Yong Hu

Cervical spondylotic myelopathy (CSM) is a common spinal cord dysfunction disease with complex symptoms in clinical presentation. Resting state fMRI (rsfMRI) has been introduced to study the mechanism of neural development of CSM. However, most of those studies focused on intrinsic functional connectivity rather than intrinsic regional neural activity level which is also frequently analyzed in ...

2015
Yu-Chen Chen Wenqing Xia Bin Luo Vijaya P. K. Muthaiah Zhenyu Xiong Jian Zhang Jian Wang Richard Salvi Gao-Jun Teng

Tinnitus, a phantom ringing, buzzing, or hissing sensation with potentially debilitating consequences, is thought to arise from aberrant spontaneous neural activity at one or more sites within the central nervous system; however, the location and specific features of these oscillations are poorly understood with respect to specific tinnitus features. Recent resting-state functional magnetic res...

2015
Yun Wu Gong-Jun Ji Yu-Feng Zang Wei Liao Zhen Jin Ya-Li Liu Ke Li Ya-Wei Zeng Fang Fang Dezhong Yao

The aim of the current study was to localize the epileptic focus and characterize its causal relation with other brain regions, to understand the cognitive deficits in children with benign childhood epilepsy with centrotemporal spikes (BECTS). Resting-state functional magnetic resonance imaging (fMRI) was performed in 37 children with BECTS and 25 children matched for age, sex and educational a...

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