Results 11 to 20 of about 375,499 (256)

Local GABA concentration is related to network-level resting functional connectivity

eLife, 2014
Anatomically plausible networks of functionally inter-connected regions have been reliably demonstrated at rest, although the neurochemical basis of these ‘resting state networks’ is not well understood.
Charlotte J Stagg, Velicia Bachtiar, Ugwechi Amadi, Christel A Gudberg, Andrei S Ilie, Cassandra Sampaio-Baptista, Jacinta O’Shea, Mark Woolrich, Stephen M Smith, Nicola Filippini, Jamie Near, Heidi Johansen-Berg   +11 more
doaj   +1 more source

Amplitudes of resting-state functional networks – investigation into their correlates and biophysical properties

NeuroImage, 2023
Resting-state fMRI studies have shown that multiple functional networks, which consist of distributed brain regions that share synchronised spontaneous activity, co-exist in the brain.
Soojin Lee, Janine D. Bijsterbosch, Fidel Alfaro Almagro, Lloyd Elliott, Paul McCarthy, Bernd Taschler, Roser Sala-Llonch, Christian F. Beckmann, Eugene P. Duff, Stephen M. Smith, Gwenaëlle Douaud   +10 more
doaj   +1 more source

Effects of Sub-threshold Transcutaneous Auricular Vagus Nerve Stimulation on Cingulate Cortex and Insula Resting-state Functional Connectivity

Frontiers in Human Neuroscience, 2022
Transcutaneous auricular vagus nerve stimulation (taVNS), a non-invasive alternative to vagus nerve stimulation (VNS) with implantable devices, has shown promise in treating disorders such as depression, migraine, and insomnia. Studies of these disorders
Yixiang Mao, Conan Chen, Maryam Falahpour, Kelly H. MacNiven, Kelly H. MacNiven, Gary Heit, Gary Heit, Vivek Sharma, Konstantinos Alataris, Thomas T. Liu, Thomas T. Liu   +10 more
doaj   +1 more source

B0-field dependence of MRI T1 relaxation in human brain

NeuroImage, 2020
Tissue longitudinal relaxation characterized by recovery time T1 or rate R1 is a fundamental MRI contrast mechanism that is increasingly being used to study the brain’s myelination patterns in both health and disease.
Yicun Wang, Peter van Gelderen, Jacco A. de Zwart, Jeff H. Duyn   +3 more
doaj   +1 more source

Exploring cell membrane water exchange in aquaporin-4-deficient ischemic mouse brain using diffusion-weighted MRI

European Radiology Experimental, 2021
Background Aquaporin-4 is a membrane channel protein that is highly expressed in brain astrocytes and facilitates the transport of water molecules. It has been suggested that suppression of aquaporin-4 function may be an effective treatment for reducing ...
Takuya Urushihata, Hiroyuki Takuwa, Manami Takahashi, Jeff Kershaw, Yasuhiko Tachibana, Nobuhiro Nitta, Sayaka Shibata, Masato Yasui, Makoto Higuchi, Takayuki Obata   +9 more
doaj   +1 more source

Decomposition of Spontaneous Brain Activity into Distinct fMRI Co-activation Patterns

Frontiers in Systems Neuroscience, 2013
Recent fMRI studies have shown that analysis of the human brain’s spontaneous activity may provide a powerful approach to reveal its functional organization. Dedicated methods have been proposed to investigate co-variation of signals from different brain
Xiao eLiu, Catie eChang, Jeff H. Duyn
doaj   +1 more source

The potential for gas-free measurements of absolute oxygen metabolism during both baseline and activation states in the human brain

NeuroImage, 2020
Quantitative functional magnetic resonance imaging methods make it possible to measure cerebral oxygen metabolism (CMRO2) in the human brain. Current methods require the subject to breathe special gas mixtures (hypercapnia and hyperoxia).
Eulanca Y. Liu, Jia Guo, Aaron B. Simon, Frank Haist, David J. Dubowitz, Richard B. Buxton   +5 more
doaj   +1 more source

One-year changes in brain microstructure differentiate preclinical Huntington's disease stages

NeuroImage: Clinical, 2020
Objective: To determine whether brain imaging markers of tissue microstructure can detect the effect of disease progression across the preclinical stages of Huntington's disease. Methods: Longitudinal microstructural changes in diffusion imaging metrics (
Chris Patrick Pflanz, Marina Charquero-Ballester, D.S. Adnan Majid, Anderson M. Winkler, Emmanuel Vallée, Adam R. Aron, Mark Jenkinson, Gwenaëlle Douaud   +7 more
doaj   +1 more source

Dynamic Relationship Between Interhemispheric Functional Connectivity and Corticospinal Tract Changing Pattern After Subcortical Stroke

Frontiers in Aging Neuroscience, 2022
Background and PurposeIncreased interhemispheric resting-state functional connectivity (rsFC) between the bilateral primary motor cortex (M1) compensates for corticospinal tract (CST) impairment, which facilitates motor recovery in chronic subcortical ...
Jingchun Liu, Caihong Wang, Jingliang Cheng, Peifang Miao, Zhen Li   +4 more
doaj   +1 more source

Vigilance Effects in Resting-State fMRI

Frontiers in Neuroscience, 2020
Measures of resting-state functional magnetic resonance imaging (rsfMRI) activity have been shown to be sensitive to cognitive function and disease state.
Thomas T. Liu, Thomas T. Liu, Maryam Falahpour   +2 more
doaj   +1 more source