Results 101 to 110 of about 5,493,007 (396)

Dictionary Learning and Sparse Coding-based Denoising for High-Resolution Task Functional Connectivity MRI Analysis

, 2017
We propose a novel denoising framework for task functional Magnetic Resonance Imaging (tfMRI) data to delineate the high-resolution spatial pattern of the brain functional connectivity via dictionary learning and sparse coding (DLSC). In order to address
AM Wink, B Biswal, B Jie, BT Yeo, C Bhushan, CY Wee, DM Barch, J Lv, J Lv, M Aharon, MD Fox, ML Xia, RL Buckner, S Zhao   +13 more
core   +1 more source

Intact Bilateral Resting-State Networks in the Absence of the Corpus Callosum [PDF]

, 2011
Temporal correlations between different brain regions in the resting-state BOLD signal are thought to reflect intrinsic functional brain connectivity (Biswal et al., 1995; Greicius et al., 2003; Fox et al., 2007).
Adolphs, Ralph, Kennedy, Daniel P., Paul, Lynn K., Tyszka, J. Michael   +3 more
core   +1 more source

Disambiguating brain functional connectivity

NeuroImage, 2018
Functional connectivity (FC) analyses of correlations of neural activity are used extensively in neuroimaging and electrophysiology to gain insights into neural interactions. However, analyses assessing changes in correlation fail to distinguish effects produced by sources as different as changes in neural signal amplitudes or noise levels.
Duff, EP, Makin, T, Cottaar, M, Smith, SM, Woolrich, MW   +4 more
openaire   +5 more sources

Functional Connectivity Associations With Markers of Disease Progression in GRN Pathogenic Variant Carriers

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Autosomal dominant progranulin (GRN) pathogenic variants are a genetic cause of frontotemporal lobar degeneration. Though clinical trials for GRN‐related therapies are underway, there is an unmet need for biomarkers that can predict symptom onset and track disease progression.
Taru M. Flagan, Stephanie A. Chu, Suvi Häkkinen, Liwen Zhang, David McFall, Jonathan D. Rohrer, Jesse A. Brown, Alex J. Lee, Kristen Fernhoff, Lorenzo Pasquini, Katherine P. Rankin, Maria Luisa Mandelli, Maria Luisa Gorno‐Tempini, Jennifer S. Yokoyama, Virginia E. Sturm, Brian Appleby, Bradford C. Dickerson, Kimiko Domoto‐Reilly, Tatiana Foroud, Daniel H. Geschwind, Nupur Ghoshal, Neill R. Graff‐Radford, Ging‐Yuek Robin Hsiung, Eric J. Huang, Edward Huey, Kejal Kantarci, Irene Litvan, Ian R. Mackenzie, Mario F. Mendez, Chiadi U. Onyike, Leonard Petrucelli, Eliana Marisa Ramos, Erik D. Roberson, Julio C. Rojas, Maria Carmela Tartaglia, Arthur W. Toga, Sandra Weintraub, Leah K. Forsberg, Hilary W. Heuer, Brad F. Boeve, Adam L. Boxer, Howard J. Rosen, Bruce L. Miller, Fermin Moreno, William W. Seeley, Suzee E. Lee, on behalf of the ALLFTD Consortium   +46 more
wiley   +1 more source

Evaluating methods for measuring background connectivity in slow event‐related functional magnetic resonance imaging designs

Brain and Behavior, 2023
Introduction Resting‐state functional magnetic resonance imaging (fMRI) is widely used for measuring functional interactions between brain regions, significantly contributing to our understanding of large‐scale brain networks and brain–behavior ...
Lea E. Frank, Dagmar Zeithamova
doaj   +1 more source

Abnormal connectivity between the default mode and the visual system underlies the manifestation of visual hallucinations in Parkinson’s disease:A task-based fMRI study [PDF]

, 2015
Background: The neural substrates of visual hallucinations remain an enigma, due primarily to the difficulties associated with directly interrogating the brain during hallucinatory episodes.
Halliday, Glenda M., Hornberger, Michael, Lewis, Simon J. G., Muller, Alana J., O’Callaghan, Claire, Shine, James M.   +5 more
core   +1 more source

Brain functional and effective connectivity based on electroencephalography recordings: A review

Human Brain Mapping, 2021
Functional connectivity and effective connectivity of the human brain, representing statistical dependence and directed information flow between cortical regions, significantly contribute to the study of the intrinsic brain network and its functional ...
Jun Cao, Yifan Zhao, Xiaocai Shan, Hualiang Wei, Yuzhu Guo, Liangyu Chen, J. Erkoyuncu, P. Sarrigiannis   +7 more
semanticscholar   +1 more source

Single‐Cell RNA Seq in Sydenham Chorea Shows B Cell HLA‐DR/DQ Upregulation and Plasma Cell Proteasomal Activation

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT The pathogenesis of Sydenham chorea remains unclear. We report a 10‐year‐old girl presenting with subacute chorea and mild carditis following Streptococcal throat infection. Single‐cell RNA sequencing on 30,794 peripheral immune cells from the patient and two sex‐matched controls revealed nine immune cell clusters.
Velda X. Han, Brooke A. Keating, Brian S. Gloss, Xianzhong Lau, Ruwani Dissanayake, Hiroya Nishida, Jessica Hayes, Shrujna Patel, Shekeeb S. Mohammad, Russell C. Dale   +9 more
wiley   +1 more source

Age-Related Decline in the Variation of Dynamic Functional Connectivity: A Resting State Analysis

Frontiers in Aging Neuroscience, 2017
Normal aging is typically characterized by abnormal resting-state functional connectivity (FC), including decreasing connectivity within networks and increasing connectivity between networks, under the assumption that the FC over the scan time was ...
Yuanyuan Chen, Yuanyuan Chen, Weiwei Wang, Weiwei Wang, Xin Zhao, Xin Zhao, Miao Sha, Miao Sha, Ya’nan Liu, Ya’nan Liu, Xiong Zhang, Xiong Zhang, Jianguo Ma, Hongyan Ni, Dong Ming, Dong Ming   +15 more
doaj   +1 more source

Altered Dynamic Functional Network Connectivity in Post‐Stroke Aphasia

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Previous studies examining post‐stroke aphasia (PSA) patients via resting‐state functional magnetic resonance imaging (rs‐fMRI) have predominantly focused on static functional connectivity. In contrast, the current investigation aims to elucidate the alterations in dynamic functional network connectivity (dFNC) among PSA patients ...
Guihua Xu, Yongsheng Wu, Junyu Qu, Rui Zhu, Wenwen Xu, Jiaxiang Xin, Dawei Wang   +6 more
wiley   +1 more source