keyword
MENU ▼
Read by QxMD icon Read
search

Salience network, functional connectivity, fMRI

keyword
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
#1
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
#2
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
#3
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
#4
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
https://www.readbyqxmd.com/read/29046154/neural-network-alterations-across-eating-disorders-a-narrative-review-of-fmri-studies
#5
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/28959201/altered-behavioral-and-autonomic-pain-responses-in-alzheimer-s-disease-are-associated-with-dysfunctional-affective-self-reflective-and-salience-network-resting-state-connectivity
#6
Paul A Beach, Jonathan T Huck, David C Zhu, Andrea C Bozoki
While pain behaviors are increased in Alzheimer's disease (AD) patients compared to healthy seniors (HS) across multiple disease stages, autonomic responses are reduced with advancing AD. To better understand the neural mechanisms underlying these phenomena, we undertook a controlled cross-sectional study examining behavioral (Pain Assessment in Advanced Dementia, PAINAD scores) and autonomic (heart rate, HR) pain responses in 24 HS and 20 AD subjects using acute pressure stimuli. Resting-state fMRI was utilized to investigate how group connectivity differences were related to altered pain responses...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28924621/an-altered-scaffold-for-information-processing-cognitive-control-development-in-adolescents-with-autism
#7
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/28923408/altered-functional-connectivity-in-mesial-temporal-lobe-epilepsy
#8
Hana Burianová, Nahla L Faizo, Marcus Gray, Julia Hocking, Graham Galloway, David Reutens
Growing evidence of altered functional connectivity suggests that mesial temporal lobe epilepsy (mTLE) alters not only hippocampal networks, but also a number of resting state networks. These highly coherent, yet functionally distinct brain circuits interact dynamically with each other in order to mediate consciousness, memory, and attention. However, little is currently known about the modulation of these networks by epileptiform activity, such as interictal spikes and seizures. The objective of the study was to use simultaneous EEG-fMRI to investigate functional connectivity in three resting state networks: default mode network (DMN), salience network (SN), and dorsal attentional network (DAN) in patients with mTLE compared to a healthy cohort, and in relation to the onset of interictal spikes and the period immediately prior to the spikes...
September 8, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28893929/distinct-patterns-of-temporal-and-directional-connectivity-among-intrinsic-networks-in-the-human-brain
#9
James M Shine, Aaron Kucyi, Brett L Foster, Stephan Bickel, Danhong Wang, Hesheng Liu, Russell A Poldrack, Liang-Tien Hsieh, Jen Chun Hsiang, Josef Parvizi
To determine the spatiotemporal relationships among intrinsic networks of the human brain, we recruited seven neurosurgical patients (four males and three females) who were implanted with intracranial depth electrodes. We first identified canonical resting-state networks at the individual subject level using an iterative matching procedure on each subject's resting-state fMRI data. We then introduced single electrical pulses to fMRI pre-identified nodes of the default network (DN), frontoparietal network (FPN), and salience network (SN) while recording evoked responses in other recording sites within the same networks...
October 4, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28887198/mindfulness-and-dynamic-functional-neural-connectivity-in-children-and-adolescents
#10
Hilary A Marusak, Farrah Elrahal, Craig A Peters, Prantik Kundu, Michael V Lombardo, Vince D Calhoun, Elimelech K Goldberg, Cindy Cohen, Jeffrey W Taub, Christine A Rabinak
BACKGROUND: Interventions that promote mindfulness consistently show salutary effects on cognition and emotional wellbeing in adults, and more recently, in children and adolescents. However, we lack understanding of the neurobiological mechanisms underlying mindfulness in youth that should allow for more judicious application of these interventions in clinical and educational settings. METHODS: Using multi-echo multi-band fMRI, we examined dynamic (i.e., time-varying) and conventional static resting-state connectivity between core neurocognitive networks (i...
January 15, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/28882089/the-default-mode-network-as-a-biomarker-of-persistent-complaints-after-mild-traumatic-brain-injury-a-longitudinal-functional-mri-study
#11
Harm J van der Horn, Myrthe E Scheenen, Myrthe E de Koning, Edith J Liemburg, Jacoba M Spikman, Joukje van der Naalt
The objective of this study was to examine longitudinal functional connectivity of resting-state networks in patients with and without complaints after uncomplicated mild traumatic brain injury (mTBI). Second, we aimed to determine the value of network connectivity in predicting persistent complaints, anxiety, depression and long-term outcome. Thirty mTBI patients with three or more post-traumatic complaints at 2 weeks post-injury, 19 without complaints, and 20 matched healthy controls were selected for this study...
October 27, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28861340/multivariate-pattern-analysis-strategies-in-detection-of-remitted-major-depressive-disorder-using-resting-state-functional-connectivity
#12
Runa Bhaumik, Lisanne M Jenkins, Jennifer R Gowins, Rachel H Jacobs, Alyssa Barba, Dulal K Bhaumik, Scott A Langenecker
Understanding abnormal resting-state functional connectivity of distributed brain networks may aid in probing and targeting mechanisms involved in major depressive disorder (MDD). To date, few studies have used resting state functional magnetic resonance imaging (rs-fMRI) to attempt to discriminate individuals with MDD from individuals without MDD, and to our knowledge no investigations have examined a remitted (r) population. In this study, we examined the efficiency of support vector machine (SVM) classifier to successfully discriminate rMDD individuals from healthy controls (HCs) in a narrow early-adult age range...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28836577/oxytocin-modulates-attention-switching-between-interoceptive-signals-and-external-social-cues
#13
Shuxia Yao, Benjamin Becker, Weihua Zhao, Zhiying Zhao, Juan Kou, Xiaole Ma, Yayuan Geng, Peng Ren, Keith M Kendrick
Emotional experience involves an integrated interplay between processing of external emotional cues and interoceptive feedback, and this is impaired in a number of emotional disorders. The neuropeptide oxytocin (OT) enhances the salience of external social cues but its influence on interoception is unknown. The present pharmaco-fMRI study therefore investigated whether OT enhances interoceptive awareness and if it influences the interplay between interoceptive and salience processing. In a randomized, double-blind, between-subject, design study 83 subjects received either intranasal OT or placebo...
August 24, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28830309/aberrant-thalamocortical-connectivity-in-juvenile-myoclonic-epilepsy
#14
S Jiang, C Luo, J Gong, R Peng, S Ma, S Tan, G Ye, L Dong, D Yao
The purpose of this study was to investigate the functional connectivity (FC) of thalamic subdivisions in patients with juvenile myoclonic epilepsy (JME). Resting state functional magnetic resonance imaging (fMRI) and diffusion tensor imaging (DTI) data were acquired from 22 JME and 25 healthy controls. We first divided the thalamus into eight subdivisions by performing independent component analysis on tracking fibers and clustering thalamus-related FC maps. We then analyzed abnormal FC in each subdivision in JME compared with healthy controls, and we investigated their associations with clinical features...
June 13, 2017: International Journal of Neural Systems
https://www.readbyqxmd.com/read/28826495/anatomical-and-functional-organization-of-the-human-substantia-nigra-and-its-connections
#15
Yu Zhang, Kevin Michel-Herve Larcher, Bratislav Misic, Alain Dagher
We investigated the anatomical and functional organization of the human substantia nigra (SN) using diffusion and functional MRI data from the Human Connectome Project. We identified a tripartite connectivity-based parcellation of SN with a limbic, cognitive, motor arrangement. The medial SN connects with limbic striatal and cortical regions and encodes value (greater response to monetary wins than losses during fMRI), while the ventral SN connects with associative regions of cortex and striatum and encodes salience (equal response to wins and losses)...
August 21, 2017: ELife
https://www.readbyqxmd.com/read/28819132/treatment-associated-changes-of-functional-connectivity-of-midbrain-brainstem-nuclei-in-major-depressive-disorder
#16
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/28806707/deviant-functional-activation-and-connectivity-of-the-right-insula-are-associated-with-lack-of-awareness-of-episodic-memory-impairment-in-nonamnesic-alcoholism
#17
Anne-Pascale Le Berre, Eva M Müller-Oehring, Tilman Schulte, Matthew R Serventi, Adolf Pfefferbaum, Edith V Sullivan
A disorder of metamemory, expressed as unawareness of mnemonic ability, is typically associated with the profound amnesia of Korsakoff's Syndrome (KS). A similar but less severe type of limited awareness can also occur in non-KS alcoholism and is observed as an impairment in generating Feeling-of-Knowing (FOK) predictions about future recognition performance. We previously found that FOK accuracy was selectively related to volumes of the insula in alcoholics involved in the present study. Unknown, however, are the neural substrates of unawareness of memory impairment in alcoholism...
October 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28783763/mapping-altered-brain-connectivity-and-its-clinical-associations-in-adult-moyamoya-disease-a-resting-state-functional-mri-study
#18
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/28762756/intranasal-oxytocin-selectively-modulates-large-scale-brain-networks-in-humans
#19
Katja Brodmann, Oliver Gruber, Roberto Goya-Maldonado
A growing body of evidence indicates that the neuropeptide oxytocin (OT) alters the neural correlates of socioemotional and salience processing. Yet the effects of OT over important large-scale networks involved in these processes, such as the default mode (DM), ventral attention (VA), and cingulo-opercular (CO) networks, remain unknown. Therefore, we conducted a placebo-controlled crossover study with intranasal 24 IU OT in 38 healthy male subjects using a resting-state functional magnetic resonance imaging paradigm to investigate its impact over these three networks candidates...
September 2017: Brain Connectivity
https://www.readbyqxmd.com/read/28747648/resting-state-brain-connectivity-changes-in-obese-women-after-roux-en-y-gastric-bypass-surgery-a-longitudinal-study
#20
Gaia Olivo, Wei Zhou, Magnus Sundbom, Christina Zhukovsky, Pleunie Hogenkamp, Lamia Nikontovic, Julia Stark, Lyle Wiemerslage, Elna-Marie Larsson, Christian Benedict, Helgi B Schiöth
Bariatric surgery is an effective method to rapidly induce weight loss in severely obese people, however its impact on brain functional connectivity after longer periods of follow-up is yet to be assessed. We investigated changes in connectivity in 16 severely obese women one month before, one month after and one year after Roux-en-Y gastric bypass surgery (RYGB). 12 lean controls were also enrolled. Resting-state fMRI was acquired for all participants following an overnight fast and after a 260 kcal load...
July 26, 2017: Scientific Reports
keyword
keyword
95105
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"