Results 21 to 30 of about 5,885,366 (348)

Architected Lattices with a Topological Transition

open access: yesAdvanced Engineering Materials, EarlyView., 2023
This article develops topological metamaterials showing multidirectional two‐step deformation under compression by embedding contact‐enabled topological mechanisms into lattice structures. Experiments on 3D‐printed 2D and 3D lattices and finite element simulations are conducted to demonstrate the working principle of the topological metamaterials.
Shivam Agarwal, Lihua Jin
wiley   +1 more source

Local-Global Parcellation of the Human Cerebral Cortex From Intrinsic Functional Connectivity MRI

open access: yesbioRxiv, 2017
A central goal in systems neuroscience is the parcellation of the cerebral cortex into discrete neurobiological “atoms”. Resting-state functional magnetic resonance imaging (rs-fMRI) offers the possibility of in-vivo human cortical parcellation.
A. Schaefer   +7 more
semanticscholar   +1 more source

Functional connectivity changes and their relationship with clinical disability and white matter integrity in patients with relapsing-remitting multiple sclerosis [PDF]

open access: yes, 2015
Background and objective: To define the pathological substrate underlying disability in multiple sclerosis by evaluating the relationship of resting-state functional connectivity with microstructural brain damage, as assessed by diffusion tensor maging ...
Filippini, N   +8 more
core   +1 more source

Identification of psychiatric-disorder subtypes from functional-connectivity patterns in resting-state electroencephalography

open access: yesNature Biomedical Engineering, 2020
The understanding and treatment of psychiatric disorders, which are known to be neurobiologically and clinically heterogeneous, could benefit from the data-driven identification of disease subtypes.
Yu Zhang   +20 more
semanticscholar   +1 more source

Dynamic BOLD functional connectivity in humans and its electrophysiological correlates [PDF]

open access: yes, 2012
Neural oscillations subserve many human perceptual and cognitive operations. Accordingly, brain functional connectivity is not static in time, but fluctuates dynamically following the synchronization and desynchronization of neural populations.
Brodbeck, Verena   +4 more
core   +2 more sources

Functional connectivity in the resting brain: A network analysis of the default mode hypothesis

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2002
Functional imaging studies have shown that certain brain regions, including posterior cingulate cortex (PCC) and ventral anterior cingulate cortex (vACC), consistently show greater activity during resting states than during cognitive tasks.
M. Greicius   +3 more
semanticscholar   +1 more source

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

Detection of brain functional-connectivity difference in post-stroke patients using group-level covariance modeling [PDF]

open access: yes, 2010
Functional brain connectivity, as revealed through distant correlations in the signals measured by functional Magnetic Resonance Imaging (fMRI), is a promising source of biomarkers of brain pathologies.
A. Vanhaudenhuyse   +9 more
core   +5 more sources

The functional logic of corticostriatal connections [PDF]

open access: yesBrain Structure and Function, 2016
Unidirectional connections from the cortex to the matrix of the corpus striatum initiate the cortico-basal ganglia (BG)-thalamocortical loop, thought to be important in momentary action selection and in longer-term fine tuning of behavioural repertoire; a discrete set of striatal compartments, striosomes, has the complementary role of registering or ...
Stewart Shipp, Stewart Shipp
openaire   +3 more sources

State-dependent changes of connectivity patterns and functional brain network topology in Autism Spectrum Disorder [PDF]

open access: yes, 2012
Anatomical and functional brain studies have converged to the hypothesis that Autism Spectrum Disorders (ASD) are associated with atypical connectivity.
Barttfeld, Pablo   +6 more
core   +2 more sources

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