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Brain Functional Connectivity Asymmetry: Left Hemisphere Is More Modular
2022
Symmetry
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Our results show that the left hemisphere is more modular. ...
In this paper, we hypothesize that the structure of the left hemisphere is, on average, more modular. ...
Due to the hemispheric asymmetries mentioned above, we hypothesize that the left hemisphere is more modular. ...
doi:10.3390/sym14040833
fatcat:wbm7kyu4xncqxojb664t77bjvq
Role of inter-hemispheric connections in functional brain networks
[article]
2017
arXiv
pre-print
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Our results show that the distribution of centrality strongly depends on the number of functional connections between hemispheres and the way these connections are distributed. ...
Specifically, we consideredfunctional brain networks derived from high-density electroencephalographic (EEG) recordings and investigated how node centrality is shaped by interhemispheric connections. ...
De Vico Fallani is supported by the French Agence Nationale de la Recherche (programme ANR-15-NEUC-0006-02). ...
arXiv:1710.11413v1
fatcat:oqu6xp3lu5g7fkm4rgkobo5i5i
Intrahemispheric cortico-cortical connections of the human auditory cortex
2014
Brain Structure and Function
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The modular architecture and hemispheric asymmetry in higher-order regions is compatible with segregated processing streams and lateralization of cognitive functions. ...
Putative higher-order areas on the temporal and parietal convexities had more widely spread local connectivity and long-range connections with the prefrontal cortex; analysis of optimal community structure ...
Hemispheric asymmetry of cortico-cortical connections. ...
doi:10.1007/s00429-014-0872-z
pmid:25173473
fatcat:bnydmgok5bbp5l5o326y4l5ffq
Effects of Age on the Structure of Functional Connectivity Networks During Episodic and Working Memory Demand
2012
Brain Connectivity
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In contrast, seniors showed pronounced left-hemispheric asymmetry with decreased connectivity within occipital areas, but increased connectivity within parietal areas. ...
a more specific and localized activity in young subjects. ...
Author Disclosure Statement The authors have no commercial associations that might create a conflict of interest in connection with this article. ...
doi:10.1089/brain.2012.0077
pmid:22698449
pmcid:PMC3621329
fatcat:icsengec35balfvzxxv6uor37q
Phenotypic Variability in Resting-State Functional Connectivity: Current Status
2013
Brain Connectivity
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Together, the reviewed evidence sets the stage for testing causal hypothesis about the functional role of intrinsic connectivity and augments its potential as a biomarker for healthy and disordered brain ...
We reviewed the extant literature with the goal of assessing the extent to which resting-state functional connectivity is associated with phenotypic variability in healthy and disordered populations. ...
in the left hemisphere. ...
doi:10.1089/brain.2012.0110
pmid:23294010
pmcid:PMC3634144
fatcat:kycgpre4orbgtdmhepuqtrveai
Functional connectivity and laterality of the motor and sensory components in the volitional swallowing network
2012
Experimental Brain Research
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The greater connectivity from the left hemisphere insula to brain regions within and across hemispheres suggests that the insula is a primary integrative region for volitional swallowing in humans. ...
Although unilateral brain lesions in either hemisphere can produce swallowing deficits, some functional neuroimaging studies indicate that the left hemisphere has greater activation in certain sensory ...
target, using the following formula in which LL is the left seed, left hemisphere connectivity, LR is the left seed, right hemisphere connectivity, RL is the right seed, left hemispheres connectivity, ...
doi:10.1007/s00221-012-3069-9
pmid:22441258
pmcid:PMC3374850
fatcat:aypxa3yxbvh6lcotymyawunrve
Resting-State Networks and the Functional Connectome of the Human Brain in Agenesis of the Corpus Callosum
2013
Brain Connectivity
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The corpus callosum is the largest white matter fiber bundle connecting the two cerebral hemispheres. ...
Hence, the reduction or even complete absence of callosal connectivity does not affect the qualitative organization of bilateral resting-state networks or the modular organization of the functional connectome ...
The content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH. The authors would like to thank J. ...
doi:10.1089/brain.2013.0175
pmid:24063289
pmcid:PMC3868398
fatcat:4dmm7i4gande5g67gjry2v6gwe
Functional Connections in the Brain Transform Experience into Memory
2006
PLoS Biology
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Summerfi eld C, Greene M, Wager T, Egner T, Hirsch J, et al. (2006) Neocortical connectivity during episodic memory formation. ...
Regions of the dorsolateral prefrontal cortex found to exhibit signifi cant connectivity with face-sensitive (red) and place-sensitive (green) visual regions during the formation of new associations between ...
It could be that the left hemisphere acquires more sophisticated math-related functions over time while the right remains relatively stable. ...
doi:10.1371/journal.pbio.0040165
pmid:20076573
pmcid:PMC1436032
fatcat:jehnwchsrfanznhgn6lqlsta6q
Inference of direct and multistep effective connectivities from functional connectivity of the brain and of relationships to cortical geometry
2017
Journal of Neuroscience Methods
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Highlights • Neural Field Theory (NFT) can yield effective connectivity from functional connectivity. • Effective and functional connectivity are related to cortical geometry. • Norm-minimization is a ...
A c c e p t e d M a n u s c r i p t hemispheric connections to be estimated. ...
left hemisphere; because aCM expt is symmetric, the transposed submatrix X T represents the connections 235 from left to right hemisphere. ...
doi:10.1016/j.jneumeth.2017.03.014
pmid:28342831
fatcat:whtoca2vv5d27cpxewlhhrwdv4
Function–structure associations of the brain: Evidence from multimodal connectivity and covariance studies
2014
NeuroImage
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To examine the function-structure associations of the brain in a more comprehensive and integrated manner, we reviewed a number of multimodal studies that combined two or more functional (fMRI and/or EEG ...
brain (e.g. development) or the diseased brain (e.g. mental illness) and, in the latter case, may provide a more sensitive measure than unimodal imaging for disease classification, e.g. multimodal biomarkers ...
Patients with schizophrenia showed abnormal hemispheric asymmetry regarding their functional connectivity profiles of the ACC-cd with multiple brain areas, as for example increased negative connectivity ...
doi:10.1016/j.neuroimage.2013.09.044
pmid:24084066
pmcid:PMC3969780
fatcat:tngvfiyrdreyvmcg55qyqs6o6u
Reorganization of brain networks in aging: a review of functional connectivity studies
2015
Frontiers in Psychology
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More recent approaches have focused on the study of functional connectivity, mainly derived from resting state fMRI, and have concluded that the higher levels of activity coexist with disrupted connectivity ...
A common finding of the studies included is that older subjects present reduced functional connectivity compared to young adults. ...
Furthermore, the different patterns of spatial localization of the compensation-related mechanisms leaded to the formulation of three main cognitive models: (1) The Hemispheric Asymmetry Reduction in Old ...
doi:10.3389/fpsyg.2015.00663
pmid:26052298
pmcid:PMC4439539
fatcat:bv2utufknbf2zffeq6klcbcbiu
White matter (dis)connections and gray matter (dys)functions in visual neglect: Gaining insights into the brain networks of spatial awareness
2008
Cortex
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Brain 1965;88:585-644), was extensively treated elsewhere (Bartolomeo P, Thiebaut de Schotten M, Doricchi F. Left unilateral neglect as a disconnection syndrome, Cerebral Cortex 2007;45:3127-48). ...
We first summarise the structure of long-range white matter connections within the cerebral hemispheres and sketch a brief historical review of the original findings suggesting the role of intrahemispheric ...
Mesulam (1981 Mesulam ( , 1999 Mesulam ( , 2002 proposed that neglect is more frequent after right brain damage because the right hemisphere controls attentional orienting in both the left and right hemispaces ...
doi:10.1016/j.cortex.2008.03.006
pmid:18603235
fatcat:tuj5i5hzkjhxvmbdu6e55lxqze
Altered Resting State Brain Dynamics in Temporal Lobe Epilepsy Can Be Observed in Spectral Power, Functional Connectivity and Graph Theory Metrics
2013
PLoS ONE
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To our knowledge, this is the only study to encompass power, connectivity and graph theory metrics to investigate the reorganization of resting state functional networks in LTLE patients. ...
Using EEG data from 15 controls and 9 left temporal lobe epilepsy (LTLE) patients, in this study we characterize how the dynamics of the healthy brain differ from the "dynamically balanced" state of the ...
In this study we presented a characterization of brain dynamics accompanying the epileptic brain, encompassing brain activity, functional connectivity and network metrics in the hope of providing: 1) more ...
doi:10.1371/journal.pone.0068609
pmid:23922658
pmcid:PMC3724835
fatcat:fki7rrllzzhqpanjhzmwkxgsbm
A graph theory-based modeling of functional brain connectivity based on EEG: A systematic review in the context of neuroergonomics
2020
IEEE Access
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Furthermore, the unweighted functional brain network has received substantially more attention in the literature than the weighted network. ...
This review provides insight into the use of graph theory metrics to model functional brain connectivity in the context of neuroergonomics research. ...
from the left and
right hemispheres were demonstrated
by a higher density, betweenness, and
node degree for the left hemisphere.
9
[56]
19 EEG
channels
Synchroni
zation
likelihood
Indirect ...
doi:10.1109/access.2020.3018995
fatcat:cbihabctmzbs3cdt7thxrma7bm
Hemispheric asymmetries in cerebral cortical networks
2003
Trends in Neurosciences
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Asymmetries in functional information processing Perhaps the most cited hemispheric difference that might be related to the various microanatomical asymmetries is the better ability of the left hemisphere ...
A history of area specialization Functional lateralization in the brain is, in essence, a more explicit version of regional specialization of mental processes within the cerebral cortex. ...
doi:10.1016/s0166-2236(03)00198-x
pmid:12900174
fatcat:qo7ekxw3jraspdqf56vnaghu7m
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