Results 31 to 40 of about 117,241 (194)

Lag structure in resting-state fMRI

open access: yesJournal of Neurophysiology, 2014
The discovery that spontaneous fluctuations in blood oxygen level-dependent (BOLD) signals contain information about the functional organization of the brain has caused a paradigm shift in neuroimaging. It is now well established that intrinsic brain activity is organized into spatially segregated resting-state networks (RSNs). Less is known regarding
A, Mitra   +3 more
openaire   +3 more sources

Temporal dynamics in fMRI resting-state activity [PDF]

open access: yesProceedings of the National Academy of Sciences, 2015
In a significant new study, Mitra et al. (1) demonstrate the existence of reproducible temporal patterns of spontaneous activity from human functional magnetic resonance imaging (fMRI) recordings. This finding and the novel methods used to demonstrate it bring the question of the role of temporally patterned activity into the domain of human cognition.
Rafael, Yuste, Adrienne L, Fairhall
openaire   +2 more sources

Hemodynamic and electrophysiological evidence of resting-state network activity in the primate [PDF]

open access: yes, 2008
An expanding body of literature describes the existence of concerted brain activations in the absence of any external stimuli. Resting-state networks have been identified and demonstrated to be modulated during the performance of specific cognitive ...
Allen Ardestani   +4 more
core   +2 more sources

Group analysis data representing the effects of frontopolar transcranial direct current stimulation on the default mode network

open access: yesData in Brief, 2018
The current data provide information about altered activities of the default mode network (DMN) after applying transcranial direct current stimulation (tDCS) over the frontopolar prefrontal cortex. To explore whether frontopolar tDCS with a small current
Jeesung Ahn   +4 more
doaj   +1 more source

fMRI biomarkers of social cognitive skills training in psychosis: Extrinsic and intrinsic functional connectivity. [PDF]

open access: yes, 2019
Social cognitive skills training interventions for psychotic disorders have shown improvement in social cognitive performance tasks, but little was known about brain-based biomarkers linked to treatment effects.
Green, Michael F   +3 more
core   +2 more sources

Optimizing Stimulation and Analysis Protocols for Neonatal fMRI [PDF]

open access: yes, 2014
The development of brain function in young infants is poorly understood. The core challenge is that infants have a limited behavioral repertoire through which brain function can be expressed.
Arichi, T   +5 more
core   +1 more source

State-Dependent Effective Connectivity in Resting-State fMRI

open access: yesFrontiers in Neural Circuits, 2021
The human brain at rest exhibits intrinsic dynamics transitioning among the multiple metastable states of the inter-regional functional connectivity. Accordingly, the demand for exploring the state-specific functional connectivity increases for a deeper ...
Hae-Jeong Park   +18 more
doaj   +1 more source

Altered regional homogeneity in pediatric bipolar disorder during manic state: a resting-state fMRI study. [PDF]

open access: yesPLoS ONE, 2013
UNLABELLED: Pediatric bipolar disorder (PBD) is a severely debilitating illness, which is characterized by episodes of mania and depression separated by periods of remission. Previous fMRI studies investigating PBD were mainly task-related.
Qian Xiao   +6 more
doaj   +1 more source

Resting-state fMRI: new possibilities for studying physiology and pathology of the brain

open access: yesАнналы клинической и экспериментальной неврологии, 2017
A new method, resting-state fMRI, has been proposed recentlfor studying basic sensory, emotional, and cognitive processes inhealthy and neurologically affected subjects.
E. V. Seliverstova   +3 more
doaj   +1 more source

Multiscale network activity in resting state fMRI [PDF]

open access: yes2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2016
The brain is inherently multiscalar in both space and time. We argue that this multiscalar nature is reflected in the blood oxygenation level dependent (BOLD) fluctuations used to map functional connectivity. We present evidence that global fluctuations in activity, quasiperiodic spatiotemporal patterns, and aperiodic time-varying activity coexist ...
Shella D, Keilholz   +7 more
openaire   +2 more sources

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