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Salience network, functional connectivity, fMRI

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https://www.readbyqxmd.com/read/29339474/robust-prediction-of-individual-creative-ability-from-brain-functional-connectivity
#1
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/29335882/clinical-response-to-vim-s-thalamic-stereotactic-radiosurgery-for-essential-tremor-is-associated-with-distinctive-functional-connectivity-patterns
#2
Constantin Tuleasca, Elena Najdenovska, Jean Régis, Tatiana Witjas, Nadine Girard, Jérôme Champoudry, Mohamed Faouzi, Jean-Philippe Thiran, Meritxell Bach Cuadra, Marc Levivier, Dimitri Van De Ville
INTRODUCTION: Essential tremor (ET) is the most common movement disorder. Drug-resistant ET can benefit from standard surgical stereotactic procedures (deep brain stimulation, thalamotomy) or minimally invasive high-intensity focused ultrasound (HIFU) or stereotactic radiosurgical thalamotomy (SRS-T). Resting-state fMRI (rs-fMRI) is a non-invasive imaging method acquired in absence of a task. We examined whether rs-fMRI correlates with tremor score on the treated hand (TSTH) improvement 1 year after SRS-T...
January 15, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29300840/reconfiguration-of-cortical-networks-in-mdd-uncovered-by-multiscale-community-detection-with-fmri
#3
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
#4
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/29247717/higher-order-thalamic-nuclei-resting-network-connectivity-in-early-schizophrenia-and-major-depressive-disorder
#5
Jacob Penner, Elizabeth A Osuch, Betsy Schaefer, Jean Théberge, Richard W J Neufeld, Ravi S Menon, Nagalingam Rajakumar, James A Bourne, Peter C Williamson
The pulvinar and the mediodorsal (MDN) nuclei of the thalamus are higher order nuclei which have been implicated in directed effort and corollary discharge systems. We used seed-based resting fMRI to examine functional connectivity to bilateral pulvinar and MDN in 24 schizophrenic patients (SZ), 24 major depressive disorder patients (MDD), and 24 age-matched healthy controls. SZ had less connectivity than controls between the left pulvinar and precuneus, left ventral-lateral prefrontal cortex (vlPFC), and superior and medial-frontal regions, between the right pulvinar and right frontal pole, and greater connectivity between the right MDN and left dorsolateral prefrontal cortex (dlPFC)...
December 8, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29237282/modulation-of-salience-network-intranetwork-resting-state-functional-connectivity-in-women-with-chronic-migraine
#6
X Michelle Androulakis, Chris Rorden, B Lee Peterlin, Kaitlin Krebs
Objective To investigate the intranetwork resting state fMRI connectivity within the Salience Network of chronic migraine with and without medication overuse headache. Methods We compared 351 pairs of intranetwork connectivity in chronic migraine (n = 13) and chronic migraine with medication overuse headache (n = 16) compared to matched controls, and between each chronic migraine subgroup. Results Compared to controls, 17 pairs of intranetwork connections in chronic migraine and 27 pairs in chronic migraine with medication overuse headache were decreased...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/29237276/differential-effects-of-left-and-right-prefrontal-high-frequency-rtms-on-resting-state-fmri-in-healthy-individuals
#7
Renee S Schluter, Jochem M Jansen, Ruth J van Holst, Wim van den Brink, Anna E Goudriaan
High frequency repetitive transcranial magnetic stimulation (HF-rTMS) has gained great interest in multiple clinical and research fields and is believed to accomplish its effect by influencing neuronal networks. The dlPFC is frequently chosen as the cortical target for HF-rTMS. However very little is known about the differential effect of HF-rTMS over the left and right dlPFC on intrinsic functional connectivity networks in patients or in healthy individuals. The current study assessed the differential effects of left or right HF-rTMS (corrected for sham) on intrinsic Independent Component Analysis (ICA) defined functional connectivity networks in a sample of 45 healthy individuals...
December 14, 2017: Brain Connectivity
https://www.readbyqxmd.com/read/29205574/different-pre-scanning-instructions-induce-distinct-psychological-and-resting-brain-states-during-functional-magnetic-resonance-imaging
#8
Toshikazu Kawagoe, Keiichi Onoda, Shuhei Yamaguchi
Resting-state functional magnetic resonance imaging (rs-fMRI) is widely used to investigate functional brain network connectivity during rest or when the subject is not performing an explicit task. In the standard procedure, subjects are instructed to "let your mind wander" or "think of nothing." While these instructions appear appropriate to induce a "resting-state," they could induce distinct psychological and physiological states during the scan. In this study, we investigated whether different instructions affect mental state and functional connectivity (FC) (i...
December 4, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29192157/linking-functional-connectivity-and-dynamic-properties-of-resting-state-networks
#9
Won Hee Lee, Sophia Frangou
Spontaneous brain activity is organized into resting-state networks (RSNs) involved in internally-guided, higher-order mental functions (default mode, central executive and salience networks) and externally-driven, specialized sensory and motor processing (auditory, visual and sensorimotor networks). RSNs are characterized by their functional connectivity in terms of within-network cohesion and between-network integration, and by their dynamic properties in terms of synchrony and metastability. We examined the relationship between functional connectivity and dynamic network features using fMRI data and an anatomically constrained Kuramoto model...
November 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29179629/spinal-cord-injury-disrupts-resting-state-networks-in-the-human-brain
#10
Ammar Hawasli, Jerrel Rutlin, Jarod L Roland, Rory Murphy, Sheng-Kwei Song, Eric Leuthardt, Joshua Shimony, Wilson Z Ray
Despite 253,000 spinal cord injury (SCI) patients in America, little is known about how SCI affects brain networks. Spinal magnetic resonance imaging (MRI) provides only structural information with no insight into functional connectivity. Resting-state functional MRI (RS-fMRI) quantifies network connectivity through the identification of resting-state networks (RSNs) and allows detection of functionally-relevant changes during disease. Given the robust network of spinal cord afferents to the brain, we hypothesized SCI produces meaningful changes in brain RSNs...
November 27, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29175032/convergent-and-divergent-functional-connectivity-patterns-in-patients-with-long-term-left-sided-and-right-sided-deafness
#11
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
#12
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
#13
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/29164505/network-level-dysconnectivity-in-patients-with-nasopharyngeal-carcinoma-npc-early-post-radiotherapy-longitudinal-resting-state-fmri-study
#14
Yingwei Qiu, Zheng Guo, Lujun Han, Yadi Yang, Jing Li, Shiliang Liu, Xiaofei Lv
In this study, we seek to longitudinally investigate the network-level functional connectivity (FC) alternations and its association with irradiation dose and cognition changes in the early stage post radiotherapy (RT) in nasopharyngeal carcinoma (NPC) patients. We performed independent component analysis (ICA) of resting state blood oxygen level-dependent functional magnetic resonance imaging (BOLD-fMRI) from 39 newly diagnosed NPC patients before receiving treatment (baseline), and 3 months post-RT. the default mode network (DMN), salience network (SN), and executive control network (ECN) were extracted with well-validated software (GIFT)...
November 21, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29161362/the-hierarchical-organization-of-the-default-dorsal-attention-and-salience-networks-in-adolescents-and-young-adults
#15
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
#16
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
#17
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/29073458/resting-state-fmri-correlates-of-theory-of-mind-impairment-in-amyotrophic-lateral-sclerosis
#18
Francesca Trojsi, Federica Di Nardo, Gabriella Santangelo, Mattia Siciliano, Cinzia Femiano, Carla Passaniti, Giuseppina Caiazzo, Michele Fratello, Mario Cirillo, Maria Rosaria Monsurrò, Fabrizio Esposito, Gioacchino Tedeschi
Theory of Mind (ToM), the ability to recognize thoughts and emotions of another, may be one of the cognitive domains affected in amyotrophic lateral sclerosis (ALS), a neurodegenerative disease now recognized as a multi-system disorder. The present study aimed to identify early dysfunctions of brain resting state functional magnetic resonance imaging (RS-fMRI) networks in a group of ALS patients longitudinally explored for impairment of "cognitive" and "affective" ToM subcomponents. RS-fMRI connectivity was investigated in a group of 21 patients with ALS (i...
October 3, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29059918/investigating-the-bold-spectral-power-of-the-intrinsic-connectivity-networks-in-fibromyalgia-patients-a-resting-state-fmri-study
#19
Behnaz Jarrahi, Katherine T Martucci, Aneesha S Nilakantan, Sean Mackey
Recent advances in multivariate statistical analysis of blood oxygen level dependent (BOLD) functional magnetic resonance imaging (fMRI) have provided novel insights into the network organization of the human brain. Here, we applied group independent component analysis, a well-established approach for detecting brain intrinsic connectivity networks, to examine the spontaneous BOLD fluctuations in patients with fibromyalgia and healthy controls before and after exposure to a stressor. The BOLD spectral power characteristics of component time courses were calculated using the fast Fourier transform (FFT) algorithm, and group comparison was performed at six frequency bins between 0 and 0...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29048582/salience-network-dynamics-underlying-successful-resistance-of-temptation
#20
Rosa Steimke, Jason S Nomi, Vince D Calhoun, Christine Stelzel, Lena M Paschke, Robert Gaschler, Thomas Goschke, Henrik Walter, Lucina Q Uddin
Self-control and the ability to resist temptation are critical for successful completion of long-term goals. Contemporary models in cognitive neuroscience emphasize the primary role of prefrontal cognitive control networks in aligning behavior with such goals. Here we use gaze pattern analysis and dynamic functional connectivity fMRI data to explore how individual differences in the ability to resist temptation are related to intrinsic brain dynamics of the cognitive control and salience networks. Behaviorally, individuals exhibit greater gaze distance from target location (e...
October 18, 2017: Social Cognitive and Affective Neuroscience
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