Results 111 to 120 of about 5,493,007 (396)

The impact of early and late literacy on the functional connectivity of vision and [PDF]

open access: yes, 2017
Introduction: Learning to read leads to functional and structural changes in the cortical regions related to vision and language. The visual word-form area (VWFA) is though to play a key role in the interaction between these two systems (Dehaene et al.
Braga, Lucía W.   +7 more
core  

Changes in MEG resting-state networks are related to cognitive decline in type 1 diabetes mellitus patients [PDF]

open access: yes, 2014
OBJECTIVE: Integrity of resting-state functional brain networks (RSNs) is important for proper cognitive functioning. In type 1 diabetes mellitus (T1DM) cognitive decrements are commonly observed, possibly due to alterations in RSNs, which may vary ...
Barkhof F   +8 more
core   +1 more source

Functional and Effective Connectivity: A Review

open access: yesBrain Connectivity, 2011
Over the past 20 years, neuroimaging has become a predominant technique in systems neuroscience. One might envisage that over the next 20 years the neuroimaging of distributed processing and connectivity will play a major role in disclosing the brain's ...
Karl J. Friston
semanticscholar   +1 more source

Functional Connectivity of the Chemosenses: A Review

open access: yesFrontiers in Systems Neuroscience, 2022
Functional connectivity approaches have long been used in cognitive neuroscience to establish pathways of communication between and among brain regions. However, the use of these analyses to better understand how the brain processes chemosensory information remains nascent.
Michael C. Farruggia   +6 more
openaire   +3 more sources

Lesion Location and Functional Connections Reveal Cognitive Impairment Networks in Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Cognitive impairment, fatigue, and depression are common in multiple sclerosis (MS), potentially due to disruption of regional functional connectivity caused by white matter (WM) lesions. We explored whether WM lesions functionally connected to specific brain regions contribute to these MS‐related manifestations.
Alessandro Franceschini   +7 more
wiley   +1 more source

The effects of hemodynamic lag on functional connectivity and behavior after stroke [PDF]

open access: yes, 2015
Stroke disrupts the brain's vascular supply, not only within but also outside areas of infarction. We investigated temporal delays (lag) in resting state functional magnetic resonance imaging signals in 130 stroke patients scanned two weeks, three months
Corbetta, Maurizio   +4 more
core   +1 more source

Cortical Hubs Revealed by Intrinsic Functional Connectivity: Mapping, Assessment of Stability, and Relation to Alzheimer's Disease

open access: yesJournal of Neuroscience, 2009
Recent evidence suggests that some brain areas act as hubs interconnecting distinct, functionally specialized systems. These nexuses are intriguing because of their potential role in integration and also because they may augment metabolic cascades ...
R. Buckner   +8 more
semanticscholar   +1 more source

Locally connected sets and functions

open access: yesJournal of Mathematical Analysis and Applications, 1988
A set \(C\subset {\mathbb{R}}^ n\) is said to be locally connected (LC) if for each pair of points \(x^ 1,x^ 2\in C\) there exist a maximum positive number \(a(x^ 1,x^ 2)\leq 1\) and a function \(H_{x^ 1,x^ 2}:\quad [0,1]\to {\mathbb{R}}^ n\) such that \[ H_{x^ 1,x^ 2}(0)=x^ 1,\quad H_{x^ 1,x^ 2}(1)=x^ 2,\quad H_{x^ 1,x^ 2}(\lambda)\in C \] for ...
Surjeet Kaur, R.N Kaul, Vinod Lyall
openaire   +2 more sources

Connections on some functional bundles [PDF]

open access: yesCzechoslovak Mathematical Journal, 1995
The authors investigate connections on the infinite-dimensional fiber bundle \({\mathcal F} (E_1, E_2)\) consisting of the smooth maps between fibers over the same basepoint of the fiber bundles \(E_1\), \(E_2\) over a manifold \(M\), and derive a formula for the curvature of such connections.
Antonella Cabras, Ivan Kolář
openaire   +2 more sources

Expanding Hereditary Spastic Paraplegias Limits: Biallelic SPAST Variants in Cerebral Palsy Mimics

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Hereditary spastic paraplegias (HSP) are rare neurodegenerative disorders marked by spasticity and lower limb weakness. The most common type, SPG4, is usually autosomal dominant and caused by SPAST gene variants, typically presenting as pure HSP.
Gregorio A. Nolasco   +18 more
wiley   +1 more source

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