Results 31 to 40 of about 201,441 (259)

Brain effective connectivity and functional connectivity as markers of lifespan vascular exposures in middle-aged adults: The Bogalusa Heart Study

Frontiers in Aging Neuroscience, 2023
IntroductionEffective connectivity (EC), the causal influence that functional activity in a source brain location exerts over functional activity in a target brain location, has the potential to provide different information about brain network dynamics ...
Kai-Cheng Chuang, Kai-Cheng Chuang, Sreekrishna Ramakrishnapillai, Sreekrishna Ramakrishnapillai, Kaitlyn Madden, Julia St Amant, Kevin McKlveen, Kathryn Gwizdala, Ramasudhakar Dhullipudi, Lydia Bazzano, Owen Carmichael   +10 more
doaj   +1 more source

A Novel Approach for Segment-Length Selection Based on Stationarity to Perform Effective Connectivity Analysis Applied to Resting-State EEG Signals

Sensors, 2022
Connectivity among different areas within the brain is a topic that has been notably studied in the last decade. In particular, EEG-derived measures of effective connectivity examine the directionalities and the exerted influences raised from the ...
Leonardo Góngora, Alessia Paglialonga, Alfonso Mastropietro, Giovanna Rizzo, Riccardo Barbieri   +4 more
doaj   +1 more source

Close or connected: Distance and connectivity effects on transport in networks [PDF]

Physical Review E, 2011
We develop an analytical approach which provides the dependence of the mean first-passage time (MFPT) for random walks on complex networks both on the target connectivity and on the source-target distance. Our approach puts forward two strongly different behaviors depending on the type - compact or non compact - of the random walk.
Vincent Tejedor, Olivier Bénichou, Raphael Voituriez   +2 more
openaire   +3 more sources

State-Dependent Effective Connectivity in Resting-State fMRI

Frontiers in Neural Circuits, 2021
The human brain at rest exhibits intrinsic dynamics transitioning among the multiple metastable states of the inter-regional functional connectivity. Accordingly, the demand for exploring the state-specific functional connectivity increases for a deeper ...
Hae-Jeong Park, Hae-Jeong Park, Hae-Jeong Park, Hae-Jeong Park, Hae-Jeong Park, Jinseok Eo, Jinseok Eo, Chongwon Pae, Chongwon Pae, Chongwon Pae, Chongwon Pae, Junho Son, Junho Son, Sung Min Park, Sung Min Park, Jiyoung Kang, Jiyoung Kang, Jiyoung Kang, Jiyoung Kang   +18 more
doaj   +1 more source

The Effect of the China Connect

SSRN Electronic Journal, 2019
We document the effect on Chinese firms of the Shanghai (Shenzhen)-Hong Kong Stock Connect. The Connect was an important capital account liberalization introduced in the mid-2010s. It created a channel for cross-border equity investments into a selected set of Chinese stocks while China's overall capital controls policy remained in place.
Chang Ma, John Rogers, Sili Zhou
openaire   +2 more sources

Dynamic Causal Modeling Self-Connectivity Findings in the Functional Magnetic Resonance Imaging Neuropsychiatric Literature

Frontiers in Neuroscience, 2021
Dynamic causal modeling (DCM) is a method for analyzing functional magnetic resonance imaging (fMRI) and other functional neuroimaging data that provides information about directionality of connectivity between brain regions.
Andrew D. Snyder, Andrew D. Snyder, Liangsuo Ma, Liangsuo Ma, Joel L. Steinberg, Joel L. Steinberg, Kyle Woisard, Kyle Woisard, Frederick G. Moeller, Frederick G. Moeller, Frederick G. Moeller, Frederick G. Moeller   +11 more
doaj   +1 more source

Sparse Estimation of Resting-State Effective Connectivity From fMRI Cross-Spectra

Frontiers in Neuroscience, 2018
In functional magnetic resonance imaging (fMRI), functional connectivity is conventionally characterized by correlations between fMRI time series, which are intrinsically undirected measures of connectivity. Yet, some information about the directionality
Carolin Lennartz, Carolin Lennartz, Jonathan Schiefer, Jonathan Schiefer, Stefan Rotter, Stefan Rotter, Jürgen Hennig, Jürgen Hennig, Pierre LeVan, Pierre LeVan   +9 more
doaj   +1 more source

Establishment of Effective Biomarkers for Depression Diagnosis With Fusion of Multiple Resting-State Connectivity Measures

Frontiers in Neuroscience, 2021
Major depressive disorder (MDD) is a severe mental disorder and is lacking in biomarkers for clinical diagnosis. Previous studies have demonstrated that functional abnormalities of the unifying triple networks are the underlying basis of the ...
Yanling Li, Yanling Li, Yanling Li, Xin Dai, Huawang Wu, Lijie Wang   +5 more
doaj   +1 more source

Multiple Connection Pattern Combination From Single-Mode Data for Mild Cognitive Impairment Identification

Frontiers in Cell and Developmental Biology, 2021
Mild cognitive impairment (MCI) is generally considered to be a key indicator for predicting the early progression of Alzheimer’s disease (AD). Currently, the brain connection (BC) estimated by fMRI data has been validated to be an effective diagnostic ...
Weikai Li, Weikai Li, Xiaowen Xu, Xiaowen Xu, Zhengxia Wang, Liling Peng, Peijun Wang, Peijun Wang, Xin Gao   +8 more
doaj   +1 more source

Excessively increased thalamocortical connectivity and poor initial antiseizure medication response in epilepsy patients

Frontiers in Neurology, 2023
ObjectivesThe network mechanism underlying the initial response to antiseizure medication in epilepsy has not been revealed yet. Given the central role of the thalamus in the brain network, we conducted a case-control study to investigate the association
Jiyuan Zhong, Ge Tan, Haijiao Wang, Haijiao Wang, Yangmei Chen   +4 more
doaj   +1 more source