Filters








889,972 Hits in 10.5 sec

Relating Structural and Functional Connectivity to Performance in a Communication Task [chapter]

Jeffrey T. Duda, Corey McMillan, Murray Grossman, James C. Gee
2010 Lecture Notes in Computer Science  
Measures from event-related functional MRI, diffusion tensor imaging tractography and cognitive performance in a language-based task were used to test the hypothesis that both functional and structural  ...  connectivity provide independent and complementary information that aids in the identification of network components most related to the neurobiological basis for language and cognitive processing.  ...  These are used to examine the relationship between structure and function and their relationship to performance in the functional task.  ... 
doi:10.1007/978-3-642-15745-5_35 fatcat:6vf35ypcl5aajbrp36pw4y6qze

Pragmatic possibilities of interrogative sentences in a stable form

A Shamaxmudova
2022 Zamonaviy lingvistik tadqiqotlar: xorijiy tajribalar, istiqbolli izlanishlar va tillarni o'qitishning innovatsion usullari  
And with the study of the pragmatic nature of the sentence, pragmatic syntax, which carries out a functional approach to the analysis of syntactic phenomena, is involved.In other words, the tasks of pragmatic  ...  syntax include the study of the Active features of the speech act of subordinate clauses in its focus, as well as the interaction of the pragmatic and structural-semantic properties of the sentence  ...  If the purpose of describing sentences in terms of their structure is to illuminate the meaning of their formation' in the definition of communicative-functional approach, the legislations related to the  ... 
doi:10.47689/linguistic-research-vol-iss1-pp17-19 fatcat:nqlzvb54rjfd5k56un2w7qlcly

Healthy Aging by Staying Selectively Connected: A Mini-Review

Daria Antonenko, Agnes Flöel
2014 Gerontology  
The analysis of functional connectivity encompasses task-dependent and -independent synchronous activity in the brain, and thus reflects the organization of the brain in distinct performance-relevant networks  ...  Both functional and structural connectivity within these networks have been demonstrated to change with aging, and to have different predictive values for cognitive abilities in older compared to young  ...  The research on age-related language network changes and modulation with tDCS described in this review was supported by grants from the Deutsche Forschungsgemeinschaft (Fl 379-8/1, Fl 379-10/1, Fl 379-  ... 
doi:10.1159/000354376 pmid:24080587 fatcat:6hwdscheyngbvk3rv5oemahr2e

Age-Related Differences in Advantageous Decision Making Are Associated with Distinct Differences in Functional Community Structure

Malaak Nasser Moussa, Michael J. Wesley, Linda J. Porrino, Satoru Hayasaka, Antoine Bechara, Jonathan H. Burdette, Paul J. Laurienti
2014 Brain Connectivity  
Modularity analysis revealed stark underlying differences in visual, sensorimotor and medial prefrontal cortex community structure.  ...  The Iowa Gambling Task (IGT) was the first neuropsychological task used to model real-life decisions in a way that factors reward, punishment, and uncertainty.  ...  Neurological Disorders, and Stroke (NS070917) supported this work.  ... 
doi:10.1089/brain.2013.0184 pmid:24575804 pmcid:PMC3995120 fatcat:anhq3vnt45fonosgg7r2hvag4m

Age differences in functional network reconfiguration with working memory training

Alexandru D Iordan, Kyle D Moored, Benjamin Katz, Katherine A Cooke, Martin Buschkuehl, Susanne M Jaeggi, Thad A Polk, Scott J Peltier, John Jonides, Patricia A Reuter-Lorenz
2021 Human Brain Mapping  
Older adults exhibited lower modularity overall and a greater decrement when switching from rest to task, compared to younger adults.  ...  Twenty three younger and 23 older adults participated in 10 days of verbal WM training, leading to performance gains in both age groups.  ...  In contrast, training was F I G U R E 4 Differences in community structure as a function of time and load.  ... 
doi:10.1002/hbm.25337 pmid:33534925 pmcid:PMC7978135 fatcat:gqci6bs3ojgbzhm5j2bmt726x4

A mechanistic model of connector hubs, modularity and cognition

Maxwell A. Bertolero, B. T. Thomas Yeo, Danielle S. Bassett, Mark D'Esposito
2018 Nature Human Behaviour  
We show that a model of hub connectivity accurately predicts the cognitive performance of 476 individuals in four distinct tasks.  ...  Moreover, there is a general optimal network structure for cognitive performance--individuals with diversely connected hubs and consequent modular brain networks exhibit increased cognitive performance  ...  Each edge represents the strength of functional connectivity between each pair of 264 nodes 49 . In every network, Q and a division of nodes into communities was calculated (see Methods).  ... 
doi:10.1038/s41562-018-0420-6 fatcat:6upgg4upofba3ajwkf7qbmrf7u

Flexible network community organization during the encoding and retrieval of spatiotemporal episodic memories

Amber M Schedlbauer, Arne D Ekstrom
2019 Network Neuroscience  
Using functional magnetic resonance imaging, we employed a spatiotemporal encoding and retrieval task, detecting functional community structure across the multiple components of our task.  ...  These "mover" hubs changed connectivity patterns across spatial and temporal memory encoding and retrieval, engaging in an integrative role within the network.  ...  ACKNOWLEDGMENTS We thank Jennifer Lieberman for data collection and Dr. Joy Geng for helpful discussions.  ... 
doi:10.1162/netn_a_00102 pmid:31637339 pmcid:PMC6777981 fatcat:wzxi5ktnyjbpvilgmxl32ugsji

Method for Collecting Context Information in Mobile Communication Networks

Gi-Sung Lee
2012 The Smart Computing Review  
Monitoring dynamically controls the related function setting according to changesin thecontext information of the mobile handset and station, and each function interacts as each function adjusts to change  ...  , QoS control), the related cells, and complex conformityand bystoring information on theproposedmonitoring system context and processing structure.  ...  The tasks related to providing cross-sectional QoS are performed at CCN, and they interact with IP QoS, which can be used in the external network connected via a gateway, as well as perform QoS mapping  ... 
doi:10.6029/smartcr.2012.06.005 fatcat:u6vcboildrdu7dih2leb4fwga4

Non-assortative community structure in resting and task-evoked functional brain networks [article]

Richard F Betzel, Maxwell A Bertolero, Danielle S Bassett
2018 bioRxiv   pre-print
These findings offer a new perspective on the community organization of functional brain networks and its relation to cognition.  ...  Other classes that may play key functional roles in brain function have largely been ignored, leading to an impoverished view in the best case and a mischaracterization in the worst case.  ...  The two most commonly studied examples of non-assortative communities are (i) core-periphery structures, in which a densely connected core projects to a sparsely connected periphery, and (ii) disassortative  ... 
doi:10.1101/355016 fatcat:hdgauxvtzjb2zkryb4l67voiuu

Development of structure–function coupling in human brain networks during youth

Graham L. Baum, Zaixu Cui, David R. Roalf, Rastko Ciric, Richard F. Betzel, Bart Larsen, Matthew Cieslak, Philip A. Cook, Cedric H. Xia, Tyler M. Moore, Kosha Ruparel, Desmond J. Oathes (+7 others)
2019 Proceedings of the National Academy of Sciences of the United States of America  
Moreover, structurefunction coupling in rostrolateral prefrontal cortex was associated with executive performance and partially mediated age-related improvements in executive function.  ...  Together, these findings delineate a critical dimension of adolescent brain development, whereby the coupling between structural and functional connectivity remodels to support functional specialization  ...  We used penalized splines within a GAM to estimate linear and nonlinear age-related changes in structure-function coupling for each brain region.  ... 
doi:10.1073/pnas.1912034117 pmid:31874926 pmcid:PMC6955327 fatcat:vfcqfozowve3to4vyduhaqqu3i

Dynamic reconfiguration of frontal brain networks during executive cognition in humans

Urs Braun, Axel Schäfer, Henrik Walter, Susanne Erk, Nina Romanczuk-Seiferth, Leila Haddad, Janina I. Schweiger, Oliver Grimm, Andreas Heinz, Heike Tost, Andreas Meyer-Lindenberg, Danielle S. Bassett
2015 Proceedings of the National Academy of Sciences of the United States of America  
Here, we use a series of techniques developed in the field of "dynamic network neuroscience" to investigate the dynamics of functional brain networks in 344 healthy subjects during a working-memory challenge  ...  The brain is an inherently dynamic system, and executive cognition requires dynamically reconfiguring, highly evolving networks of brain regions that interact in complex and transient communication patterns  ...  In the present study, we have provided evidence that the functional connectivity during a working-memory task is dynamically organized into adapting modules and that this adapting modular structure relates  ... 
doi:10.1073/pnas.1422487112 pmid:26324898 pmcid:PMC4577153 fatcat:fgflxdvpard2bbc75mrroxq4wi

Moderate-Heavy Alcohol Consumption Lifestyle in Older Adults Is Associated with Altered Central Executive Network Community Structure during Cognitive Task

Rhiannon E. Mayhugh, Malaak N. Moussa, Sean L. Simpson, Robert G. Lyday, Jonathan H. Burdette, Linda J. Porrino, Paul J. Laurienti, Adam J Schwarz
2016 PLoS ONE  
The older adults had significantly lower whole brain connectivity (global efficiency) and lower regional connectivity (community structure) in the CEN during task and in the DMN at rest.  ...  Taken together, a lifestyle including moderate-heavy alcohol consumption may be associated with further decreases in brain network connectivity within task-related networks in older adults.  ...  functional connectivity in the CEN during task performance.  ... 
doi:10.1371/journal.pone.0160214 pmid:27494180 pmcid:PMC4975417 fatcat:mzna7kcypndenoztkeqxxc7lg4

Reconfiguration of brain network architectures between resting state and complexity-dependent cognitive reasoning

Luke J. Hearne, Luca Cocchi, Andrew Zalesky, Jason B. Mattingley
2017 Journal of Neuroscience  
It is less clear how such task-driven adaptive changes in connectivity relate to stable, intrinsic networks of the brain and behavioral performance.  ...  The reasoning task required participants to deduce the identity of a missing element in a 4 ϫ 4 matrix, and item difficulty was scaled parametrically as determined by relational complexity theory.  ...  To do so, we used high-field functional magnetic resonance imaging (fMRI) to measure brain activity at rest and during performance of a behavioral task in which task complexity was manipulated parametrically  ... 
doi:10.1523/jneurosci.0485-17.2017 pmid:28760864 fatcat:zpzcnbwmyvhovfsjg5ilwswr54

Measuring the Impact of Alternative Parallel Process Architectures on Communication Subsystem Performance [chapter]

Douglas C. Schmidt, Tatsuya Suda
1995 IFIP Advances in Information and Communication Technology  
To effectively parallelize a communication subsystem, careful consideration must be given to the process architecture used to structure multiple processing elements.  ...  A process architecture binds one or more processing elements with the protocol tasks and messages associated with protocol stacks in a communication subsystem.  ...  A key aspect of communication subsystem performance involves the type of process architecture selected to structure parallel processing of protocol tasks.  ... 
doi:10.1007/978-0-387-34885-8_8 fatcat:qzhzokjierb5xcdjazryc4airu

Cognitive Processing Involves Dynamic Reorganization of the Whole-Brain Network's Functional Community Structure

Michał Bola, Viola Borchardt
2016 Journal of Neuroscience  
A novelty of this study is that the authors investigated the dynamic reorganization of brain functional networks during performance of the classic n-back working-memory task.  ...  To test these hypotheses, Vatansever et al. (2015) investigated the community structure (modularity) of the network.  ...  Thus, in contrast to other graph measures, changes in the community structure of the network might be easier to interpret in physiological terms.  ... 
doi:10.1523/jneurosci.0106-16.2016 pmid:27030750 fatcat:hso3lscdivaclg7oaymjqdtdsq
« Previous Showing results 1 — 15 out of 889,972 results