keyword
MENU ▼
Read by QxMD icon Read
search

Resting state functional MRI

keyword
https://www.readbyqxmd.com/read/28527054/understanding-migraine-as-a-cycling-brain-syndrome-reviewing-the-evidence-from-functional-imaging
#1
Arne May
Due to the clinical picture and also based on early imaging data (Weiller et al. Nat Med 1:658-660, 1995), the brainstem and midbrain structures have been intensely discussed as possible driving or generating structures in migraine. The fact that the brainstem activation persisted after treatment makes it unlikely that this activation was only due to increased activity of the endogenous anti-nociceptive system. It was consequently (and somewhat simplifying) coined the "migraine generator". Since then several studies have focussed on this region when investigating episodic, but also chronic migraine...
May 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28525877/functional-network-connectivity-predicts-treatment-outcome-during-treatment-of-nicotine-use-disorder
#2
Claire E Wilcox, Vince D Calhoun, Srinivas Rachakonda, Eric D Claus, Rae A Littlewood, Jessica Mickey, Pamela B Arenella, Kent E Hutchison
Altered resting state functional connectivity (rsFC) and functional network connectivity (FNC), which is a measure of coherence between brain networks, may be associated with nicotine use disorder (NUD). We hypothesized that higher connectivity between insula and 1) dorsal anterior cingulate cortex (dACC) and 2) dorsolateral prefrontal cortex (dlPFC) would predict better treatment outcomes. We also performed an exploratory analysis of the associations between FNC values between additional key frontal and striatal regions and treatment outcomes...
April 30, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28521048/altered-coupling-between-resting-state-cerebral-blood-flow-and-functional-connectivity-in-schizophrenia
#3
Jiajia Zhu, Chuanjun Zhuo, Lixue Xu, Feng Liu, Wen Qin, Chunshui Yu
Background: Respective changes in resting-state cerebral blood flow (CBF) and functional connectivity in schizophrenia have been reported. However, their coupling alterations in schizophrenia remain largely unknown. Methods: 89 schizophrenia patients and 90 sex- and age-matched healthy controls underwent resting-state functional MRI to calculate functional connectivity strength (FCS) and arterial spin labeling imaging to compute CBF. The CBF-FCS coupling of the whole gray matter and the CBF/FCS ratio (the amount of blood supply per unit of connectivity strength) of each voxel were compared between the 2 groups...
May 17, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28515708/disrupted-structural-and-functional-networks-and-their-correlation-with-alertness-in-right-temporal-lobe-epilepsy-a-graph-theory-study
#4
Wenyu Jiang, Jianping Li, Xuemei Chen, Wei Ye, Jinou Zheng
Previous studies have shown that temporal lobe epilepsy (TLE) involves abnormal structural or functional connectivity in specific brain areas. However, limited comprehensive studies have been conducted on TLE associated changes in the topological organization of structural and functional networks. Additionally, epilepsy is associated with impairment in alertness, a fundamental component of attention. In this study, structural networks were constructed using diffusion tensor imaging tractography, and functional networks were obtained from resting-state functional MRI temporal series correlations in 20 right temporal lobe epilepsy (rTLE) patients and 19 healthy controls...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28514668/concurrent-white-matter-bundles-and-grey-matter-networks-using-independent-component-analysis
#5
REVIEW
Jonathan O'Muircheartaigh, Saad Jbabdi
Developments in non-invasive diffusion MRI tractography techniques have permitted the investigation of both the anatomy of white matter pathways connecting grey matter regions and their structural integrity. In parallel, there has been an expansion in automated techniques aimed at parcellating grey matter into distinct regions based on functional imaging. Here we apply independent component analysis to whole-brain tractography data to automatically extract brain networks based on their associated white matter pathways...
May 14, 2017: NeuroImage
https://www.readbyqxmd.com/read/28504840/clinical-utility-of-a-short-resting-state-mri-scan-in-differentiating-bipolar-from-unipolar-depression
#6
M Li, T Das, W Deng, Q Wang, Y Li, L Zhao, X Ma, Y Wang, H Yu, X Li, Y Meng, L Palaniyappan, T Li
OBJECTIVE: Depression in bipolar disorder (BipD) requires a therapeutic approach that is from treating unipolar major depressive disorder (UniD), but to date, no reliable methods could separate these two disorders. The aim of this study was to establish the clinical validity and utility of a non-invasive functional MRI-based method to classify BipD from UniD. METHOD: The degree of connectivity (degree centrality or DC) of every small unit (voxel) with every other unit of the brain was estimated in 22 patients with BipD and 22 age, gender, and depressive severity-matched patients with UniD and 22 healthy controls...
May 15, 2017: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/28504361/alterations-of-resting-state-fmri-measurements-in-individuals-with-cervical-dystonia
#7
Zhihao Li, Cecília N Prudente, Randall Stilla, K Sathian, H A Jinnah, Xiaoping Hu
Cervical dystonia (CD) is a neurological disorder with typical symptoms of involuntary and abnormal movements and postures of the head. CD-associated alterations of functional brain networks have not been well characterized. Previous studies of CD using resting-state functional MRI (rfMRI) are limited in two aspects: (i) the analyses were not directly focused on the functional brain network related to head movement and (ii) rfMRI measurements other than functional connectivity (FC) were not investigated. The present study examined alterations of FC in CD by capitalizing on newly identified brain regions supporting isometric head rotation (Prudente et al...
May 15, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28503674/identifying-brain-nociceptive-information-transmission-in-patients-with-chronic-somatic-pain
#8
Don A Davis, Mariam E Ghantous, Melissa A Farmer, Alexis T Baria, A Vania Apkarian
INTRODUCTION: Recent advances regarding mechanisms of chronic pain emphasize the role of corticolimbic circuitry in predicting risk for chronic pain, independently from site of injury-related parameters. These results compel revisiting the role of peripheral nociceptive signaling in chronic pain. We address this issue by examining what brain circuitry transmit information regarding the intensity of chronic pain and how this information may be related to a common co-morbidity, depression...
October 2016: Pain Reports (Baltimore, Md.)
https://www.readbyqxmd.com/read/28502844/a-novel-approach-to-map-induced-activation-of-neuronal-networks-using-chemogenetics-and-functional-neuroimaging-in-rats-a-proof-of-concept-study-on-the-mesocorticolimbic-system
#9
Theresia J M Roelofs, Jeroen P H Verharen, Geralda A F van Tilborg, Linde Boekhoudt, Annette van der Toorn, Johannes W de Jong, Mieneke C M Luijendijk, Willem M Otte, Roger A H Adan, Rick M Dijkhuizen
Linking neural circuit activation at whole-brain level to neuronal activity at cellular level remains one of the major challenges in neuroscience research. We set up a novel functional neuroimaging approach to map global effects of locally induced activation of specific midbrain projection neurons using chemogenetics (Designer Receptors Exclusively Activated by Designer Drugs (DREADD)-technology) combined with pharmacological magnetic resonance imaging (phMRI) in the rat mesocorticolimbic system. Chemogenetic activation of DREADD-targeted mesolimbic or mesocortical pathways, i...
May 11, 2017: NeuroImage
https://www.readbyqxmd.com/read/28493536/functional-hypergraph-uncovers-novel-covariant-structures-over-neurodevelopment
#10
Shi Gu, Muzhi Yang, John D Medaglia, Ruben C Gur, Raquel E Gur, Theodore D Satterthwaite, Danielle S Bassett
Brain development during adolescence is marked by substantial changes in brain structure and function, leading to a stable network topology in adulthood. However, most prior work has examined the data through the lens of brain areas connected to one another in large-scale functional networks. Here, we apply a recently developed hypergraph approach that treats network connections (edges) rather than brain regions as the unit of interest, allowing us to describe functional network topology from a fundamentally different perspective...
May 11, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28490656/role-of-habenula-and-amygdala-dysfunction-in-parkinson-disease-patients-with-punding
#11
Vladana Markovic, Federica Agosta, Elisa Canu, Alberto Inuggi, Igor Petrovic, Iva Stankovic, Francesca Imperiale, Tanja Stojkovic, Vladimir S Kostic, Massimo Filippi
OBJECTIVE: To assess whether a functional dysregulation of the habenula and amygdala, as modulators of the reward brain circuit, contributes to Parkinson disease (PD) punding. METHODS: Structural and resting-state functional MRI were obtained from 22 patients with PD punding, 30 patients with PD without any impulsive-compulsive behavior (ICB) matched for disease stage and duration, motor impairment, and cognitive status, and 30 healthy controls. Resting-state functional connectivity of the habenula and amygdala bilaterally was assessed using a seed-based approach...
May 10, 2017: Neurology
https://www.readbyqxmd.com/read/28484929/functional-mri-for-assessment-of-the-default-mode-network-in-acute-brain-injury
#12
Daniel Kondziella, Patrick M Fisher, Vibeke Andrée Larsen, John Hauerberg, Martin Fabricius, Kirsten Møller, Gitte Moos Knudsen
BACKGROUND: Assessment of the default mode network (DMN) using resting-state functional magnetic resonance imaging (fMRI) may improve assessment of the level of consciousness in chronic brain injury, and therefore, fMRI may also have prognostic value in acute brain injury. However, fMRI is much more challenging in critically ill patients because of cardiovascular vulnerability, intravenous sedation, and artificial ventilation. METHODS: Using resting-state fMRI, we investigated the DMN in a convenience sample of patients with acute brain injury admitted to the intensive care unit...
May 8, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28483721/large-scale-sparse-functional-networks-from-resting-state-fmri
#13
Hongming Li, Theodore D Satterthwaite, Yong Fan
Delineation of large-scale functional networks (FNs) from resting state functional MRI data has become a standard tool to explore the functional brain organization in neuroscience. However, existing methods sacrifice subject specific variation in order to maintain the across-subject correspondence necessary for group-level analyses. In order to obtain subject specific FNs that are comparable across subjects, existing brain decomposition techniques typically adopt heuristic strategies or assume a specific statistical distribution for the FNs across subjects, and therefore might yield biased results...
May 5, 2017: NeuroImage
https://www.readbyqxmd.com/read/28480993/cognitive-and-neuroimaging-changes-in-healthy-immigrants-upon-relocation-to-a-high-altitude-a-panel-study
#14
Xiaoming Chen, Qian Zhang, Jiye Wang, Jie Liu, Wenbin Zhang, Shun Qi, Hui Xu, Chen Li, Jinsong Zhang, Haitao Zhao, Shanshan Meng, Dan Li, Huanyu Lu, Michael Aschner, Bin Li, Hong Yin, Jingyuan Chen, Wenjing Luo
BACKGROUND: Cognitive and neuroimaging changes under chronic high-altitude exposure have never been followed up and dynamically assessed. OBJECTIVES: To investigate the cognitive and brain structural/functional alterations associated with chronic high-altitude exposure. METHODS: Sixty-nine college freshmen that were immigrating to Tibet were enrolled and followed up for two years. Neuropsychological tests, including verbal/visual memory and simple/recognition reaction time, were utilized to determine whether the subjects' cognitive function had changed in response to chronic high-altitude exposure...
May 8, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28479103/linking-graph-features-of-anatomical-architecture-to-regional-brain-activity-a-multi-modal-mri-study
#15
Tien-Wen Lee, Shao-Wei Xue
BACKGROUND: Previous empirical research has treated regional neural responses and network architecture separately. However, anecdotal reports have suggested a close relationship between the two. This study aims to investigate the influence of structural connectivity on regional spontaneous activities. METHODS: Datasets of structural magnetic resonance imaging (sMRI), resting state functional MRI (rs-fMRI) and diffusion weighted imaging (DWI) of 36 right-handed healthy subjects (average age 27...
May 4, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28474183/do-all-roads-lead-to-rome-a-comparison-of-brain-networks-derived-from-inter-subject-volumetric-and-metabolic-covariance-and-moment-to-moment-hemodynamic-correlations-in-old-individuals
#16
Xin Di, Suril Gohel, Andre Thielcke, Hans F Wehrl, Bharat B Biswal
Relationships between spatially remote brain regions in human have typically been estimated by moment-to-moment correlations of blood-oxygen-level dependent signals in resting-state using functional MRI (fMRI). Recently, studies using subject-to-subject covariance of anatomical volumes, cortical thickness, and metabolic activity are becoming increasingly popular. However, question remains on whether these measures reflect the same inter-region connectivity and brain network organizations. In the current study, we systematically analyzed inter-subject volumetric covariance from anatomical MRI images, metabolic covariance from fluorodeoxyglucose positron emission tomography images from 193 healthy subjects, and resting-state moment-to-moment correlations from fMRI images of a subset of 44 subjects...
May 4, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28468232/a-pilot-study-on-brain-plasticity-of-functional-connectivity-modulated-by-cognitive-training-in-mild-alzheimer-s-disease-and-mild-cognitive-impairment
#17
Francesco Barban, Matteo Mancini, Mara Cercignani, Fulvia Adriano, Roberta Perri, Roberta Annicchiarico, Giovanni Augusto Carlesimo, Claudia Ricci, Maria Giovanna Lombardi, Valeria Teodonno, Laura Serra, Giovanni Giulietti, Lucia Fadda, Alessia Federici, Carlo Caltagirone, Marco Bozzali
Alzheimer's disease (AD) alters the functional connectivity of the default mode network (DMN) but also the topological properties of the functional connectome. Cognitive training (CT) is a tool to slow down AD progression and is likely to impact on functional connectivity. In this pilot study, we aimed at investigating brain functional changes after a period of CT and active control (AC) in a group of 26 subjects with mild AD (mAD), 26 with amnestic mild cognitive impairment (aMCI), and a control group of 29 healthy elderly (HE) people...
April 29, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28465163/protein-synthesis-is-associated-with-high-speed-dynamics-and-broad-band-stability-of-functional-hubs-in-the-brain
#18
Peter J Hellyer, Erica F Barry, Alberto Pellizzon, Mattia Veronese, Gaia Rizzo, Matteo Tonietto, Manuel Schütze, Michael Brammer, Marco Aurélio Romano-Silva, Alessandra Bertoldo, Federico E Turkheimer
L-[1-(11)C]leucine PET can be used to measure in vivo protein synthesis in the brain. However, the relationship between regional protein synthesis and on-going neural dynamics is unclear. We use a graph theoretical approach to examine the relationship between cerebral protein synthesis (rCPS) and both static and dynamical measures of functional connectivity (measured using resting state functional MRI, R-fMRI). Our graph theoretical analysis demonstrates a significant positive relationship between protein turnover and static measures of functional connectivity...
May 2, 2017: NeuroImage
https://www.readbyqxmd.com/read/28462586/infraslow-eeg-and-dynamic-resting-state-network-activity
#19
Joshua K Grooms, Garth John Thompson, Wen-Ju Pan, Jacob Billings, Eric H Schumacher, Charles M Epstein, Shella Dawn Keilholz
A number of studies have linked the BOLD signal to EEG signals in traditional frequency bands (δ, θ, α, β, and γ), but the relationship between BOLD and its direct frequency correlates in the infraslow band (<1 Hz) has been little studied. Previously, work in rodents showed that infraslow local field potentials play a role in functional connectivity, particularly in the dynamic organization of large-scale networks. To examine the relationship between infraslow activity and network dynamics in humans, direct current (DC) EEG and resting state MRI data were acquired simultaneously...
May 2, 2017: Brain Connectivity
https://www.readbyqxmd.com/read/28461059/high-resolution-functional-mri-identified-distinct-global-intrinsic-functional-networks-of-nociceptive-posterior-insula-and-s2-regions-in-squirrel-monkey-brain
#20
Ruiqi Wu, Feng Wang, Pai-Feng Yang, Li Min Chen
Numerous functional imaging and electrophysiological studies in humans and animals indicate that the two contiguous areas of secondary somatosensory cortex (S2) and posterior insula (pIns) are core regions in nociceptive processing and pain perception. In this study, we tested the hypothesis that the S2-pIns connection serves as a hub for connecting distinct sensory and affective nociceptive processing networks in the squirrel monkey brain. At 9.4T, we first mapped the brain regions that respond to nociceptive heat stimuli with high-resolution fMRI, and then used seed-based resting-state fMRI (rsfMRI) analysis to delineate and refine the global intrinsic functional connectivity circuits of the proximal S2 and pIns regions...
April 28, 2017: NeuroImage
keyword
keyword
15221
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"