keyword
MENU ▼
Read by QxMD icon Read
search

resting-state

keyword
https://www.readbyqxmd.com/read/29333912/the-resting-state-fmri-arterial-signal-predicts-differential-blood-transit-time-through-the-brain
#1
Yunjie Tong, Jinxia Fiona Yao, J Jean Chen, Blaise deB Frederick
Previous studies have found that aperiodic, systemic low-frequency oscillations (sLFOs) are present in blood-oxygen-level-dependent (BOLD) data. These signals are in the same low frequency band as the "resting state" signal; however, they are distinct signals which represent non-neuronal, physiological oscillations. The same sLFOs are found in the periphery (i.e. finger tips) as changes in oxy/deoxy-hemoglobin concentration using concurrent near-infrared spectroscopy. Together, this evidence points toward an extra-cerebral origin of these sLFOs...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29333724/voluntary-activation-and-twitch-potentiation-of-the-elbow-flexors-across-supinated-neutral-and-pronated-forearm-orientations
#2
Sienna Kohn, Rowan R Smart, Jennifer M Jakobi
Elbow flexion force depends on forearm orientation with supinated and neutral being stronger than pronated. The purpose of this study was to assess the influence of forearm orientation on voluntary activation (VA), postactivation potentiation (PAP), and twitch properties. Eleven males (23 ± 3 years) performed isometric elbow flexion maximal voluntary contractions (MVC) in supinated, neutral, and pronated forearm orientations with supramaximal stimulation to the biceps brachii muscle belly before, during, and after the MVC...
January 2018: Physiological Reports
https://www.readbyqxmd.com/read/29332091/the-association-among-default-mode-network-functional-connectivity-mentalization-and-psychopathology-in-a-nonclinical-sample-an-eloreta-study
#3
Benedetto Farina, Giacomo Della Marca, Giulia Maestoso, Noemi Amoroso, Enrico Maria Valenti, Giuseppe Alessio Carbone, Chiara Massullo, Anna Contardi, Claudio Imperatori
AIMS: We investigated default mode network (DMN) electroencephalography (EEG) functional connectivity differences between individuals with self-reported high mentalization capability and low psychopathological symptoms, versus participants with mentalization impairments and high psychopathological symptoms. METHODS: Forty-nine students (35 women) with a mean age of 22.92 ± 2.53 years were administered the Mentalization Questionnaire (MZQ) and the Symptom Checklist-90-Revised...
January 13, 2018: Psychopathology
https://www.readbyqxmd.com/read/29331931/resting-state-fmri-signals-in-offspring-of-parents-with-bipolar-disorder-at-the-high-risk-and-ultra-high-risk-stages-and-their-relations-with-cognitive-function
#4
Kangguang Lin, Robin Shao, Rui Lu, Kun Chen, Weicong Lu, Ting Li, Jiehua Kong, Kwok-Fai So, Guiyun Xu
BACKGROUND: Bipolar disorder (BD) has been associated with dysfunctional resting-state brain functioning. However, it is still not known whether the aberrant functioning occurs and predict cognitive functioning before illness onset. AIMS: We examined the resting-state regional and network dysfunctioning, and their correlates with neurocognitive performance, in the high-risk (HR) and ultra-high-risk (UHR) stages of bipolar disorder. METHODS: Using amplitude of low-frequency fluctuations (ALFF), region homogeneity (ReHo) and hypothesis-driven region-of-interest (ROI)-based connectivity, we examined resting-state fMRI data of 8- to 25-year-old healthy offspring (HR, n = 28) and offspring with subthreshold syndromes (UHR, n = 22) of a BD parent, and age-matched healthy controls without any personal or family psychopathology (HC, n = 46)...
January 8, 2018: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29331317/resting-state-quantitative-eeg-characteristics-of-insomniac-patients-with-depression
#5
Yunna Kwan, Chorom Baek, Sunhye Chung, Tae Hui Kim, Sungwon Choi
Insomnia is known to show hyperarousal in the central nervous system. However, depression that often coexists with insomnia exhibits hypo-activity in the frontal lobe, which is very different from insomnia. In the present study, we examined wake resting state EEG of insomniac patients with depression to investigate whether they could be conceptualized as spectrum of insomnia or significantly different from insomnia. We compared the absolute power values of EEG spectra of three groups: 15 insomniacs with comorbid depression (CD), age- and sex-matched 15 comorbid-free insomniacs (CFI), and 15 good sleep controls (GSC)...
January 10, 2018: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/29331064/controlling-the-temporal-structure-of-brain-oscillations-by-focused-attention-meditation
#6
Mona Irrmischer, Simon J Houtman, Huibert D Mansvelder, Michael Tremmel, Ulrich Ott, Klaus Linkenkaer-Hansen
Our focus of attention naturally fluctuates between different sources of information even when we desire to focus on a single object. Focused attention (FA) meditation is associated with greater control over this process, yet the neuronal mechanisms underlying this ability are not entirely understood. Here, we hypothesize that the capacity of attention to transiently focus and swiftly change relates to the critical dynamics emerging when neuronal systems balance at a point of instability between order and disorder...
January 13, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29330134/a-supplementary-functional-connectivity-microstate-attached-to-the-default-mode-network-in-depression-revealed-by-resting-state-magnetoencephalography
#7
Siqi Zhang, Shui Tian, Mohammad Ridwan Chattun, Hao Tang, Rui Yan, Kun Bi, Zhijian Yao, Qing Lu
Default mode network (DMN) has discernable involvement in the representation of negative, self-referential information in depression. Both increased and decreased resting-state functional connectivity between the anterior and posterior DMN have been observed in depression. These conflicting connectivity differences necessitated further exploration of the resting-state DMN dysfunction in depression. Hence, we investigated the time-varying dynamic interactions within the DMN via functional connectivity microstates in a sub-second level...
January 9, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29325327/-resting-state-network-evaluation-of-chronic-smokers-by-functional-magnetic-resonance-imaging
#8
Y Zhang, Y L Li, J L Cheng, A K Dong, K Xu, Y L Li
Objective: To explore the neuromechanism of nicotine smoking, we use independent component analysis (ICA) of resting-state functional magnetic resonance imaging (fMRI) to investigate the differences of functional connectivity of resting-state networks (RSN) in chronic smokers. Methods: Forty-five chronic smokers and thirty-four age and gender matched normal nonsmoking controls experienced resting-state fMRI scanning in 3.0T MRI scanner.Differences of the function connection in each RSN between chronic smokers group and nonsmoking controls group were analyzed by SPM software which was based on Matlab platform...
December 19, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29324369/early-life-social-stress-and-resting-state-functional-connectivity-in-postpartum-rat-anterior-cingulate-circuits
#9
Benjamin C Nephew, Marcelo Febo, Wei Huang, Luis M Colon-Perez, Laurellee Payne, Guillaume L Poirier, Owen Greene, Jean A King
INTRODUCTION: Continued development and refinement of resting state functional connectivity (RSFC) fMRI techniques in both animal and clinical studies has enhanced our comprehension of the adverse effects of stress on psychiatric health. The objective of the current study was to assess both maternal behavior and resting state functional connectivity (RSFC) changes in these animals when they were dams caring for their own young. It was hypothesized that ECSS exposed dams would express depressed maternal care and exhibit similar (same networks), yet different specific changes in RSFC (different individual nuclei) than reported when they were adult females...
January 2, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29324076/brain-functional-changes-before-during-and-after-clinical-pain
#10
X Hu, A J Racek, E Bellile, T D Nascimento, M C Bender, R L Toback, D Burnett, L Khatib, R McMahan, I Kovelman, R P Ellwood, A F DaSilva
This study used an emerging brain imaging technique, functional near-infrared spectroscopy (fNIRS), to investigate functional brain activation and connectivity that modulates sometimes traumatic pain experience in a clinical setting. Hemodynamic responses were recorded at bilateral somatosensory (S1) and prefrontal cortices (PFCs) from 12 patients with dentin hypersensitivity in a dental chair before, during, and after clinical pain. Clinical dental pain was triggered with 20 consecutive descending cold stimulations (32° to 0°C) to the affected teeth...
January 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29323046/non-concomitant-cortical-structural-and-functional-alterations-in-sensorimotor-areas-following-incomplete-spinal-cord-injury
#11
Yu Pan, Wei-Bei Dou, Yue-Heng Wang, Hui-Wen Luo, Yun-Xiang Ge, Shu-Yu Yan, Quan Xu, Yuan-Yuan Tu, Yan-Qing Xiao, Qiong Wu, Zhuo-Zhao Zheng, Hong-Liang Zhao
Brain plasticity, including anatomical changes and functional reorganization, is the physiological basis of functional recovery after spinal cord injury (SCI). The correlation between brain anatomical changes and functional reorganization after SCI is unclear. This study aimed to explore whether alterations of cortical structure and network function are concomitant in sensorimotor areas after incomplete SCI. Eighteen patients with incomplete SCI (mean age 40.94 ± 14.10 years old; male:female, 7:11) and 18 healthy subjects (37...
December 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29322586/functional-connectivity-predicts-gender-evidence-for-gender-differences-in-resting-brain-connectivity
#12
Chao Zhang, Chase C Dougherty, Stefi A Baum, Tonya White, Andrew M Michael
Prevalence of certain forms of psychopathology, such as autism and depression, differs between genders and understanding gender differences of the neurotypical brain may provide insights into risk and protective factors. In recent research, resting state functional magnetic resonance imaging (rfMRI) is widely used to map the inherent functional networks of the brain. Although previous studies have reported gender differences in rfMRI, the robustness of gender differences is not well characterized. In this study, we use a large data set to test whether rfMRI functional connectivity (FC) can be used to predict gender and identify FC features that are most predictive of gender...
January 10, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29321969/the-two-year-progression-of-structural-and-functional-cerebral-mri-in-amyotrophic-lateral-sclerosis
#13
R A L Menke, M Proudfoot, K Talbot, M R Turner
MRI has emerged as one of several urgently needed candidate disease progression biomarkers for the neurodegenerative disorder amyotrophic lateral sclerosis (ALS), not least due to its unique ability to non-invasively assess structural and functional cerebral pathology. We sought to identify the extent of detectable change in cerebral MRI metrics over a more prolonged period. Analysis of multi-modal MRI data was performed in a cohort of sixteen patients (13 ALS and 3 with primary lateral sclerosis) in whom it was possible to acquire six-monthly images over two years...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29321621/functional-brain-network-mechanism-of-hypersensitivity-in-chronic-pain
#14
UnCheol Lee, Minkyung Kim, KyoungEun Lee, Chelsea M Kaplan, Daniel J Clauw, Seunghwan Kim, George A Mashour, Richard E Harris
Fibromyalgia (FM) is a chronic widespread pain condition characterized by augmented multi-modal sensory sensitivity. Although the mechanisms underlying this sensitivity are thought to involve an imbalance in excitatory and inhibitory activity throughout the brain, the underlying neural network properties associated with hypersensitivity to pain stimuli are largely unknown. In network science, explosive synchronization (ES) was introduced as a mechanism of hypersensitivity in diverse biological and physical systems that display explosive and global propagations with small perturbations...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29320526/temporal-and-spectral-characteristics-of-dynamic-functional-connectivity-between-resting-state-networks-reveal-information-beyond-static-connectivity
#15
Sharon Chiang, Emilian R Vankov, Hsiang J Yeh, Michele Guindani, Marina Vannucci, Zulfi Haneef, John M Stern
Estimation of functional connectivity (FC) has become an increasingly powerful tool for investigating healthy and abnormal brain function. Static connectivity, in particular, has played a large part in guiding conclusions from the majority of resting-state functional MRI studies. However, accumulating evidence points to the presence of temporal fluctuations in FC, leading to increasing interest in estimating FC as a dynamic quantity. One central issue that has arisen in this new view of connectivity is the dramatic increase in complexity caused by dynamic functional connectivity (dFC) estimation...
2018: PloS One
https://www.readbyqxmd.com/read/29319607/longitudinal-resting-state-fmri-in-a-mouse-model-of-metastatic-bone-cancer-reveals-distinct-functional-reorganizations-along-a-developing-chronic-pain-state
#16
David Buehlmann, Joanes Grandjeanc, Jael Xandryd, Markus Rudin
Functional neuroimaging has emerged as attractive option for characterizing pain states complementing behavioral readouts or clinical assessment. In particular resting-state fMRI (rs-fMRI) enables monitoring of functional adaptations across the brain, e.g. in response to chronic nociceptive input. We have used rs-fMRI in a mouse model of chronic pain from breast cancer derived tibial bone metastases to identify pain-induced alterations in functional connectivity (FC). Combined assessment of behavioral readouts allowed defining a trajectory as model function for extracting pain-specific FC changes from the fMRI data reflective of a chronic pain state...
January 9, 2018: Pain
https://www.readbyqxmd.com/read/29318488/disrupted-topological-organization-of-the-frontal-mesolimbic-network-in-obese-patients
#17
Qianqian Meng, Yu Han, Gang Ji, Guanya Li, Yang Hu, Li Liu, Qingchao Jin, Karen M von Deneen, Jizheng Zhao, Guangbin Cui, Huaning Wang, Dardo Tomasi, Nora D Volkow, Jixin Liu, Yongzhan Nie, Yi Zhang, Gene-Jack Wang
Neuroimaging studies have revealed brain functional abnormalities in frontal-mesolimbic regions in obesity. However, the effects of obesity on brain network topology remains largely unknown. In the current study, we employed resting-state functional magnetic resonance imaging and graph theory methods to investigate obesity-related changes in brain network topology in 26 obese patients and 28 normal weight subjects. Results revealed that the whole-brain networks of the two groups exhibited typical features of small-world topology...
January 9, 2018: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29316519/the-regional-homogeneity-of-cingulate-precuneus-regions-the-putative-biomarker-for-depression-and-anxiety
#18
Chien-Han Lai
OBJECTIVES: In addition to clinical interview, the modern putative biomarker to differentiate depression and anxiety would be warranted. The translational medicine characteristics of neuroimaging, such as the regional homogeneity (ReHo), is an option for depression and anxiety. Therefore we designed this study trying to identify the biomarker pattern for depression and anxiety. METHODS: Resting-state functional magnetic resonance imaging was acquired for 53 patients with first-episode medicine-naïve major depressive disorder (MDD), 53 first-episode medicine-naïve patients with panic disorder (PD) and 54 controls...
January 3, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29315984/default-mode-network-modifications-in-fabry-disease-a-resting-state-fmri-study-with-structural-correlations
#19
Sirio Cocozza, Giuseppe Pontillo, Mario Quarantelli, Francesco Saccà, Eleonora Riccio, Teresa Costabile, Gaia Olivo, Vincenzo Brescia Morra, Antonio Pisani, Arturo Brunetti, Enrico Tedeschi
Aim of the study was to evaluate the presence of Default Mode Network (DMN) modifications in Fabry Disease (FD), and their possible correlations with structural alterations and neuropsychological scores. Thirty-two FD patients with a genetically confirmed diagnosis of classical FD (12 males, mean age 43.3 ± 12.2) were enrolled, along with 35 healthy controls (HC) of comparable age and sex (14 males, mean age 42.1 ± 14.5). Resting-State fMRI data were analyzed using a seed-based approach, with six different seeds sampling the main hubs of the DMN...
January 9, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29315982/a-window-less-approach-for-capturing-time-varying-connectivity-in-fmri-data-reveals-the-presence-of-states-with-variable-rates-of-change
#20
Maziar Yaesoubi, Tülay Adalı, Vince D Calhoun
Functional connectivity during the resting state has been shown to change over time (i.e., has a dynamic connectivity). However, resting-state fluctuations, in contrast to task-based experiments, are not initiated by an external stimulus. Consequently, a more complicated method needs to be designed to measure the dynamic connectivity. Previous approaches have been based on assumptions regarding the nature of the underlying dynamic connectivity to compensate for this knowledge gap. The most common assumption is what we refer to as locality assumption...
January 9, 2018: Human Brain Mapping
keyword
keyword
10385
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"