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Impaired brain intrinsic connectivity in long COVID during cognitive exertion revealed by independent component analysis [PDF]

open access: yesScientific Reports
Cognitive dysfunction is a symptom of Long COVID. To characterize functional connectivity changes that may contribute to cognitive dysfunction in Long COVID (LCov), two consecutive 450 s functional magnetic resonance imaging (fMRI) scans (Runs 1 and 2 ...
Leighton Barnden   +5 more
doaj   +2 more sources

Explore the Functional Connectivity between Brain Regions during a Chemistry Working Memory Task. [PDF]

open access: yesPLoS ONE, 2015
Previous studies have rarely examined how temporal dynamic patterns, event-related coherence, and phase-locking are related to each other. This study assessed reaction-time-sorted spectral perturbation and event-related spectral perturbation in order to ...
Wen-Chi Chou   +4 more
doaj   +4 more sources

Mapping hybrid functional-structural connectivity traits in the human connectome [PDF]

open access: yesNetwork Neuroscience, 2018
One of the crucial questions in neuroscience is how a rich functional repertoire of brain states relates to its underlying structural organization. How to study the associations between these structural and functional layers is an open problem that ...
Enrico Amico, Joaquín Goñi
doaj   +4 more sources

Two kinds of conditional connectivity of hypercubes

open access: yesAKCE International Journal of Graphs and Combinatorics, 2022
A subset [Formula: see text] is called an h-extra r-component cut of G if G – F is disconnected and there are at least r components, each component has at least h + 1 vertices.
Bo Zhu   +3 more
doaj   +1 more source

White matter substrates of functional connectivity dynamics in the human brain

open access: yesNeuroImage, 2022
The contribution of structural connectivity to functional connectivity dynamics is still far from being elucidated. Herein, we applied track-weighted dynamic functional connectivity (tw-dFC), a model integrating structural, functional, and dynamic ...
Gianpaolo Antonio Basile   +7 more
doaj   +1 more source

Multi-timescale hybrid components of the functional brain connectome: A bimodal EEG-fMRI decomposition

open access: yesNetwork Neuroscience, 2020
Concurrent electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) bridge brain connectivity across timescales. During concurrent EEG-fMRI resting-state recordings, whole-brain functional connectivity (FC) strength is spatially ...
Jonathan Wirsich   +4 more
doaj   +1 more source

Auditory resting-state network connectivity in tinnitus: a functional MRI study. [PDF]

open access: yesPLoS ONE, 2012
The underlying functional neuroanatomy of tinnitus remains poorly understood. Few studies have focused on functional cerebral connectivity changes in tinnitus patients.
Audrey Maudoux   +6 more
doaj   +1 more source

Macroscopic fluctuations emerge in balanced networks with incomplete recurrent alignment

open access: yesPhysical Review Research, 2021
Networks of strongly coupled neurons with random connectivity exhibit chaotic, asynchronous fluctuations. In a previous study, we showed that when endowed with an additional component of low-rank connectivity consisting of the outer product of orthogonal
Itamar D. Landau, Haim Sompolinsky
doaj   +1 more source

Robust intra-individual estimation of structural connectivity by Principal Component Analysis

open access: yesNeuroImage, 2021
Fiber tractography based on diffusion-weighted MRI provides a non-invasive characterization of the structural connectivity of the human brain at the macroscopic level.
Lidia Konopleva   +5 more
doaj   +1 more source

Resting state connectivity and cognitive performance in adults with cerebral autosomal-dominant arteriopathy with subcortical infarcts and leukoencephalopathy [PDF]

open access: yes, 2016
Cognitive impairment is an inevitable feature of cerebral autosomal-dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL), affecting executive function, attention and processing speed from an early stage.
Cullen, Breda   +8 more
core   +1 more source

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