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https://www.readbyqxmd.com/read/29436054/sensorimotor-network-alterations-in-children-and-youth-with-prenatal-alcohol-exposure
#1
Xiangyu Long, Graham Little, Christian Beaulieu, Catherine Lebel
Children with prenatal alcohol exposure (PAE) often have impaired sensorimotor function. While altered brain structure has been noted in sensorimotor areas, the functional brain alterations remain unclear. This study aims to investigate sensorimotor brain networks in children and youth with PAE using resting-state functional magnetic resonance imaging (rs-fMRI). A parcellation-based network analysis was performed to identify brain networks related to hand/lower limb and face/upper limb function in 59 children and youth with PAE and 50 typically developing controls...
February 12, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29410103/frontoparietal-areas-link-impairments-of-large-scale-intrinsic-brain-networks-with-aberrant-fronto-striatal-interactions-in-ocd-a-meta-analysis-of-resting-state-functional-connectivity
#2
REVIEW
Deniz A Gürsel, Mihai Avram, Christian Sorg, Felix Brandl, Kathrin Koch
Neuroimaging studies report evidence for two distinct pathophysiological models of obsessive-compulsive disorder (OCD): disrupted fronto-striatal circuits and impaired large-scale fronto-parietal-limbic intrinsic brain networks, defined by functionally connected (FC) infra-slow oscillations in ongoing brain activity. To synthesize this literature and overcome inconsistencies, we conducted a coordinate-based meta-analysis of 18 whole-brain resting-state functional magnetic resonance imaging (fMRI) studies (541 patients, 572 healthy controls) comparing seed-based FC between OCD patients and healthy controls...
February 3, 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29391243/incentives-facilitate-developmental-improvement-in-inhibitory-control-by-modulating-control-related-networks
#3
Michael N Hallquist, Charles F Geier, Beatriz Luna
Adolescence is a period of heightened sensitivity to incentives and relatively weak cognitive control, which may contribute to risky behaviors. Studies of brain activity have generally identified greater activation of the ventral striatum to rewards and less activation of prefrontal regions during control tasks in adolescents compared to adults. Little is known, however, about age-related changes in the functional brain networks underlying incentive processing and cognitive control. This cross-sectional study characterized the effects of incentives on inhibitory control during an oculomotor task using whole-brain functional connectivity analyses...
January 29, 2018: NeuroImage
https://www.readbyqxmd.com/read/29339474/robust-prediction-of-individual-creative-ability-from-brain-functional-connectivity
#4
Roger E Beaty, Yoed N Kenett, Alexander P Christensen, Monica D Rosenberg, Mathias Benedek, Qunlin Chen, Andreas Fink, Jiang Qiu, Thomas R Kwapil, Michael J Kane, Paul J Silvia
People's ability to think creatively is a primary means of technological and cultural progress, yet the neural architecture of the highly creative brain remains largely undefined. Here, we employed a recently developed method in functional brain imaging analysis-connectome-based predictive modeling-to identify a brain network associated with high-creative ability, using functional magnetic resonance imaging (fMRI) data acquired from 163 participants engaged in a classic divergent thinking task. At the behavioral level, we found a strong correlation between creative thinking ability and self-reported creative behavior and accomplishment in the arts and sciences (r = 0...
January 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29300840/reconfiguration-of-cortical-networks-in-mdd-uncovered-by-multiscale-community-detection-with-fmri
#5
Ye He, Sol Lim, Santo Fortunato, Olaf Sporns, Lei Zhang, Jiang Qiu, Peng Xie, Xi-Nian Zuo
Major depressive disorder (MDD) is known to be associated with altered interactions between distributed brain regions. How these regional changes relate to the reorganization of cortical functional systems, and their modulation by antidepressant medication, is relatively unexplored. To identify changes in the community structure of cortical functional networks in MDD, we performed a multiscale community detection algorithm on resting-state functional connectivity networks of unmedicated MDD (uMDD) patients (n = 46), medicated MDD (mMDD) patients (n = 38), and healthy controls (n = 50), which yielded a spectrum of multiscale community partitions...
December 28, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29299380/higher-extrinsic-and-lower-intrinsic-connectivity-in-resting-state-networks-for-professional-baduk-go-players
#6
William S Sohn, Tae Young Lee, Seoyeon Kwak, Youngwoo Bryan Yoon, Jun Soo Kwon
Introduction: Dedication and training to a profession results in a certain level of expertise. This expertise, like any other skill obtained in our lifetime, is encoded in the brain and may be reflected in our brain's connectome. This property can be observed by mapping resting state connectivity. In this study, we examine the differences in resting state functional connectivity in four major networks between professional "Baduk" (Go) players and normal subjects. Methods: Resting state fMRI scans were acquired for professional "Baduk" (Go) players and normal controls...
December 2017: Brain and Behavior
https://www.readbyqxmd.com/read/29259022/intersubject-synchronisation-analysis-of-brain-activity-associated-with-the-instant-effects-of-acupuncture-an-fmri-study
#7
Lingmin Jin, Jinbo Sun, Ziliang Xu, Xuejuan Yang, Peng Liu, Wei Qin
OBJECTIVE: To use a promising analytical method, namely intersubject synchronisation (ISS), to evaluate the brain activity associated with the instant effects of acupuncture and compare the findings with traditional general linear model (GLM) methods. METHODS: 30 healthy volunteers were recruited for this study. Block-designed manual acupuncture stimuli were delivered at SP6, and de qi sensations were measured after acupuncture stimulation. All subjects underwent functional MRI (fMRI) scanning during the acupuncture stimuli...
December 19, 2017: Acupuncture in Medicine: Journal of the British Medical Acupuncture Society
https://www.readbyqxmd.com/read/29217684/retrieval-demands-adaptively-change-striatal-old-new-signals-and-boost-subsequent-long-term-memory
#8
Nora A Herweg, Tobias Sommer, Nico Bunzeck
The striatum is a central part of the dopaminergic mesolimbic system and contributes both to the encoding and retrieval of long-term memories. In this regard, the co-occurrence of striatal novelty and retrieval success effects in independent studies underlines the structure's double duty and suggests dynamic contextual adaption. To test this hypothesis and further investigate the underlying mechanisms of encoding and retrieval dynamics, human subjects viewed pre-familiarized scene images intermixed with new scenes and classified them as indoor vs...
December 7, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29175032/convergent-and-divergent-functional-connectivity-patterns-in-patients-with-long-term-left-sided-and-right-sided-deafness
#9
Yanyang Zhang, Zhiqi Mao, Shiyu Feng, Wenxin Wang, Jun Zhang, Xinguang Yu
Cortical reorganization may be induced in long-term single-sided deafness (SD); however, the influence of the deafness side on the functional changes remains poorly understood. Here, we investigated whole-brain functional connectivity patterns in long-term SD patients. The normalized voxel-based functional connectivity strength (FCS) was determined using resting-state fMRI (rs-fMRI) in 17 left-sided deafness (LD) patients, 21 right-sided deafness (RD) patients and 21 healthy controls (HCs). Relative to the HCs, both the LD and RD patients exhibited a reduction in the FCS in the ipsilateral visual cortex...
November 22, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29169125/functional-connectivity-between-salience-default-mode-and-frontoparietal-networks-in-post-stroke-depression
#10
Vladislav Balaev, Ivan Orlov, Alexey Petrushevsky, Olga Martynova
BACKGROUND: Previous studies have demonstrated altered resting state functional connectivity (rsFC) in patients with post-stroke depression (PSD). It remains unclear whether rsFC is changed at the network level as was shown for major depressive disorder (MDD). To address this question, we investigated rsFC of resting sate networks (RSNs) in PSD. METHODS: Eleven subjects with PSD underwent fMRI scanning at rest before and after treatment. The severity of depression was assessed using the aphasic depression rating scale (ADRS)...
November 13, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29165901/influence-of-ventral-tegmental-area-input-on-cortico-subcortical-networks-underlying-action-control-and-decision-making
#11
Anja Richter, Oliver Gruber
It is argued that the mesolimbic system has a more general function in processing all salient events, including and extending beyond rewards. Saliency was defined as an event that is unexpected due to its frequency of occurrence and elicits an attentional-behavioral switch. Using functional magnetic resonance imaging (fMRI), signals were measured in response to the modulation of salience of rewarding and nonrewarding events during a reward-based decision making task, the so called desire-reason dilemma paradigm (DRD)...
November 22, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29161362/the-hierarchical-organization-of-the-default-dorsal-attention-and-salience-networks-in-adolescents-and-young-adults
#12
Yuan Zhou, Karl J Friston, Peter Zeidman, Jie Chen, Shu Li, Adeel Razi
An important characteristic of spontaneous brain activity is the anticorrelation between the core default network (cDN) and the dorsal attention network (DAN) and the salience network (SN). This anticorrelation may constitute a key aspect of functional anatomy and is implicated in several brain disorders. We used dynamic causal modeling to assess the hypothesis that a causal hierarchy underlies this anticorrelation structure, using resting-state fMRI of healthy adolescent and young adults (N = 404). Our analysis revealed an asymmetric effective connectivity, such that the regions in the SN and DAN exerted an inhibitory influence on the cDN regions; whereas the cDN exerted an excitatory influence on the SN and DAN regions...
November 17, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29154684/brain-functional-connectivity-in-headache-disorders-a-narrative-review-of-mri-investigations
#13
Catherine D Chong, Todd J Schwedt, Anders Hougaard
Resting-state functional magnetic resonance imaging (rs-fMRI) is used to interrogate the functional connectivity and network organization amongst brain regions. Functional connectivity is determined by measuring the extent of synchronization in the spontaneous fluctuations of blood oxygenation level dependent (BOLD) signal. Here, we review current rs-fMRI studies in headache disorders including migraine, trigeminal autonomic cephalalgias, and medication overuse headache. We discuss (1) brain network alterations that are shared amongst the different headache disorders and (2) network abnormalities distinct to each headache disorder...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29136310/brain-networks-of-the-imaginative-mind-dynamic-functional-connectivity-of-default-and-cognitive-control-networks-relates-to-openness-to-experience
#14
Roger E Beaty, Qunlin Chen, Alexander P Christensen, Jiang Qiu, Paul J Silvia, Daniel L Schacter
Imagination and creative cognition are often associated with the brain's default network (DN). Recent evidence has also linked cognitive control systems to performance on tasks involving imagination and creativity, with a growing number of studies reporting functional interactions between cognitive control and DN regions. We sought to extend the emerging literature on brain dynamics supporting imagination by examining individual differences in large-scale network connectivity in relation to Openness to Experience, a personality trait typified by imagination and creativity...
November 14, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29118108/network-configurations-in-the-human-brain-reflect-choice-bias-during-rapid-face-processing
#15
Tao Tu, Noam Schneck, Jordan Muraskin, Paul Sajda
Network interactions are likely to be instrumental in processes underlying rapid perception and cognition. Specifically, high-level and perceptual regions must interact to balance pre-existing models of the environment with new incoming stimuli. Simultaneous EEG/fMRI allows for the temporal characterization of brain-network interactions combined with improved anatomical localization of regional activity. In this paper we use simultaneous EEG/fMRI and multivariate dynamical systems (MDS) analysis to characterize network relationships between constitute brain areas that reflect a subject's choice for a face versus non-face categorization task...
November 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29046154/neural-network-alterations-across-eating-disorders-a-narrative-review-of-fmri-studies
#16
Trevor Steward, José M Menchón, Susana Jiménez-Murcia, Carles Soriano-Mas, Fernando Fernández-Aranda
Functional magnetic resonance imaging (fMRI) has provided insight on how neural abnormalities are related to the symptomatology of the eating disorders (EDs): anorexia nervosa (AN), bulimia nervosa (BN), and binge eating disorder (BED). More specifically, an increasingly growing number of brain imaging studies has shed light on how functionally connected brain networks contribute not only to disturbed eating behavior, but also to transdiagnostic alterations in body/interoceptive perception, reward processing and executive functions...
October 17, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28924621/an-altered-scaffold-for-information-processing-cognitive-control-development-in-adolescents-with-autism
#17
Marjorie Solomon, Jeremy Hogeveen, Lauren Libero, Christine Nordahl
We investigated how cognitive neuroscientific studies during the last decade have advanced understanding of cognitive control from adolescence to young adulthood in individuals with autism spectrum disorder (ASD). To do so, we conducted a selective review of the larger structural, resting state, and diffusion imaging studies of brain regions and networks related to cognitive control that have been conducted since 2007 in individuals with ASD and typical development (TYP) ages 10 to 30 years that examined how these regions and networks support behavioral and task-based fMRI performance on tasks assessing cognitive control during this period...
September 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28819132/treatment-associated-changes-of-functional-connectivity-of-midbrain-brainstem-nuclei-in-major-depressive-disorder
#18
Gerd Wagner, Feliberto de la Cruz, Stefanie Köhler, Karl-Jürgen Bär
Previous functional magnetic resonance imaging (fMRI) studies demonstrated an abnormally coordinated network functioning in Major Depression Disorder (MDD) during rest. The main monoamine-producing nuclei within midbrain/brainstem are functionally integrated within these specific networks. Therefore, we aimed to investigate the resting-state functional connectivity (RSFC) of these nuclei in 45 MDD patients and differences between patients receiving two different classes of antidepressant drugs. Patients showed reduced RSFC from the ventral tegmental area (VTA) to dorsal anterior cingulate cortex (dACC) and stronger RSFC to the left amygdala and dorsolateral prefrontal cortex (DLPFC)...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28783763/mapping-altered-brain-connectivity-and-its-clinical-associations-in-adult-moyamoya-disease-a-resting-state-functional-mri-study
#19
Ken Kazumata, Khin Khin Tha, Haruto Uchino, Masaki Ito, Naoki Nakayama, Takeo Abumiya
Detection of subtle ischemic injuries in moyamoya disease may enable optimization of timing of revascularization surgery, and could potentially improve functional outcomes. Resting-state functional magnetic resonance imaging (rs-fMRI) is widely used to study functional organization of the brain, but it remains unclear whether rs-fMRI could elucidate distinct characteristics in moyamoya disease. Here, we aimed to determine changes in a conventional rs-fMRI measure and analyze any associations with clinical symptoms and cerebral hemodynamics...
2017: PloS One
https://www.readbyqxmd.com/read/28769748/mechanism-of-cerebralcare-granule%C3%A2-for-improving-cognitive-function-in-resting-state-brain-functional-networks-of-sub-healthy-subjects
#20
Jing Li, Hao Guo, Ling Ge, Long Cheng, Junjie Wang, Hong Li, Kerang Zhang, Jie Xiang, Junjie Chen, Hui Zhang, Yong Xu
Cerebralcare Granule® (CG), a Chinese herbal medicine, has been used to ameliorate cognitive impairment induced by ischemia or mental disorders. The ability of CG to improve health status and cognitive function has drawn researchers' attention, but the relevant brain circuits that underlie the ameliorative effects of CG remain unclear. The present study aimed to explore the underlying neurobiological mechanisms of CG in ameliorating cognitive function in sub-healthy subjects using resting-state functional magnetic resonance imaging (fMRI)...
2017: Frontiers in Neuroscience
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