Results 91 to 100 of about 72,622 (298)

Investigation of True High Frequency Electrical Substrates of fMRI-Based Resting State Networks Using Parallel Independent Component Analysis of Simultaneous EEG/fMRI Data [PDF]

, 2017
Previous work using simultaneously acquired electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) data has shown that the slow temporal dynamics of resting state brain networks (RSNs), e.g., default mode network (DMN), visual ...
Gopikrishna Deshpande, Yun Wang, Deshpande, Gopikrishna, Sreenath P. Kyathanahally, Vince D. Calhoun, Wang, Yun, Calhoun, Vince D, Kyathanahally, Sreenath Pruthviraj   +7 more
core   +1 more source

Dynamic effective connectivity in resting state fMRI

NeuroImage, 2018
Context-sensitive and activity-dependent fluctuations in connectivity underlie functional integration in the brain and have been studied widely in terms of synaptic plasticity, learning and condition-specific (e.g., attentional) modulations of synaptic efficacy.
Hae-Jeong Park, Karl J. Friston, Chongwon Pae, Bumhee Park, Adeel Razi   +4 more
openaire   +4 more sources

On the generalizability of resting-state fMRI machine learning classifiers [PDF]

Frontiers in Human Neuroscience, 2014
Machine learning classifiers have become increasingly popular tools to generate single-subject inferences from fMRI data. With this transition from the traditional group level difference investigations to single-subject inference, the application of machine learning methods can be seen as a considerable step forward.
Wolfgang eHuf, Wolfgang eHuf, Wolfgang eHuf, Klaudius eKalcher, Klaudius eKalcher, Klaudius eKalcher, Roland N Boubela, Roland N Boubela, Roland N Boubela, Georg eRath, Georg eRath, Andreas eVecsei, Peter eFilzmoser, Ewald eMoser, Ewald eMoser, Ewald eMoser   +15 more
openaire   +3 more sources

Glymphatic dysfunction couples with cortical excitation–inhibition imbalance in epilepsy: Evidence from Rasmussen encephalitis

Epilepsia, EarlyView.
Cong Fu et al. demonstrate that glymphatic system dysfunction is linked to enhanced inhibitory cortical activity using diffusion MRI and EEG. These findings highlight a mechanistic link between perivascular fluid dynamics and neuronal activity, suggesting a role for glymphatic function in maintaining cortical stability in epilepsy.
Cong Fu, Yujiao Yang, Pan Gong, Kun Lv, Yilin Liu, Chongyang Tang, Xiongfei Wang, Lixin Cai, Qingzhu Liu, Yuwu Jiang, Taoyun Ji, Guoming Luan   +11 more
wiley   +1 more source

Methodological problems in fMRI studies on acupuncture: a critical review with special emphasis on visual and auditory cortex activations

, 2011
Functional magnetic resonance imaging (fMRI) has been used for more than a decade to investigate possible supraspinal mechanisms of acupuncture stimulation. More than 60 studies and several review articles have been published on the topic.
Beißner, Florian, Henke, Christian
core   +1 more source

Stereo‐EEG mapping of visual working memory with task‐related high‐gamma modulations

Epilepsia, EarlyView.
Abstract Objective We describe a safe, informative, and easy‐to‐implement approach for presurgical mapping of visual working memory (VWM) with stereo‐electroencephalography (SEEG). Methods Twenty‐four patients with drug‐resistant epilepsy, 11–23 years of age, performed a single‐probe change detection VWM task, during SEEG monitoring.
Brian Ervin, Jason Buroker, Taylor Cummins, Anna W. Byars, Craig Scholle, Leonid Rozhkov, Paul S. Horn, Jeffrey R. Tenney, Hansel M. Greiner, James L. Leach, Jesse Skoch, Francesco T. Mangano, Katherine D. Holland, Ravindra Arya   +13 more
wiley   +1 more source

Correspondence Between Resting-State and Episodic Memory-Task Related Networks in Elderly Subjects

Frontiers in Aging Neuroscience, 2018
Resting-state fMRI studies demonstrated temporally synchronous fluctuations in brain activity among ensembles of brain regions, suggesting the existence of intrinsic functional networks.
Lee Simon-Vermot, Alexander N. W. Taylor, Miguel À. Araque Caballero, Nicolai Franzmeier, Katharina Buerger, Katharina Buerger, Cihan Catak, Daniel Janowitz, Lana M. Kambeitz-Ilankovic, Birgit Ertl-Wagner, Marco Duering, Michael Ewers   +11 more
doaj   +1 more source

EEG–fMRI mapping of asymmetrical delta activity in a patient with refractory epilepsy is concordant with the epileptogenic region determined by intracranial EEG

, 2006
We studied a patient with refractory focal epilepsy using continuous EEG-correlated fMRI. Seizures were characterized by head turning to the left and clonic jerking of the left arm, suggesting a right frontal epileptogenic region.
Walker, M.C., Lemieux, L., Hamandi, Khalid, Smith, Shelagh, Laufs, Helmut, Walker, Matthew C., Smith, S., Lemieux, Louis, Duncan, John S., Duncan, J.S., Laufs, H., Hamandi, K., Scott, Catherine, Scott, C.   +13 more
core   +1 more source

Frequency-Dependent Relationship Between Resting-State fMRI and Glucose Metabolism in the Elderly [PDF]

, 2019
Both glucose metabolism and resting-state fMRI (RS-fMRI) signal reflect hemodynamic features. The objective of this study was to investigate their relationship in the resting-state in healthy elderly participants (n = 18).
Su, Hui, Shi, Shenxun, Zang, Yu-Feng, Jia, Xize, Ge, Jingjie, Wu, Ping, Shi, Kuangyu, Jiang, Chengfeng, Zuo, Chuantao, Jiao, Fangyang, Gao, Zhongzhan, Guan, Yihui   +11 more
core   +1 more source

Integrating multivariate resting‐state fMRI features to localize epileptic networks in common childhood epilepsy

Epilepsia, EarlyView.
Abstract Objective Accurate localization of epileptic activity remains challenging when interictal discharges are absent or sparse. Although resting‐state functional MRI (rs‐fMRI) is noninvasive, individual rs‐fMRI metrics provide inconsistent and incomplete localization.
Qirui Zhang, Zixuan Zhang, Yvzhuo Li, Yan He, Fang Yang, Jacqueline Kim, Joseph I. Tracy, Guangming Lu, Zhiqiang Zhang   +8 more
wiley   +1 more source