Joint Spectral Decomposition for the Parcellation of the Human Cerebral Cortex Using Resting-State fMRI

2015 ◽  
pp. 85-97 ◽  
Author(s):  
Salim Arslan ◽  
Sarah Parisot ◽  
Daniel Rueckert
Keyword(s):  
Cerebral Cortex ◽  
Resting State ◽  
Spectral Decomposition ◽  
Resting State Fmri ◽  
Human Cerebral Cortex

scholarly journals The laminar pattern of resting state in human cerebral cortex

2021 ◽  
Vol 76 ◽  
pp. 8-16
Author(s):  
Anna Rita Egbert ◽  
Emilia Łojek ◽  
Bharat Biswal ◽  
Agnieszka Pluta
Keyword(s):  
Cerebral Cortex ◽  
Resting State ◽  
Human Cerebral Cortex ◽  
Laminar Pattern

scholarly journals Intrinsic Functional Relations Between Human Cerebral Cortex and Thalamus

2008 ◽  
Vol 100 (4) ◽  
pp. 1740-1748 ◽  
Author(s):  
Dongyang Zhang ◽  
Abraham Z. Snyder ◽  
Michael D. Fox ◽  
Mark W. Sansbury ◽  
Joshua S. Shimony ◽  
...  
Keyword(s):  
Cerebral Cortex ◽  
Resting State ◽  
Brain Activity ◽  
Critical Role ◽  
Resting State Fmri ◽  
Intrinsic Activity ◽  
Bold Imaging ◽  
Functional Relations ◽  
State Activity ◽  
Human Thalamus

The brain is active even in the absence of explicit stimuli or overt responses. This activity is highly correlated within specific networks of the cerebral cortex when assessed with resting-state functional magnetic resonance imaging (fMRI) blood oxygen level–dependent (BOLD) imaging. The role of the thalamus in this intrinsic activity is unknown despite its critical role in the function of the cerebral cortex. Here we mapped correlations in resting-state activity between the human thalamus and the cerebral cortex in adult humans using fMRI BOLD imaging. Based on this functional measure of intrinsic brain activity we partitioned the thalamus into nuclear groups that correspond well with postmortem human histology and connectional anatomy inferred from nonhuman primates. This structure/function correspondence in resting-state activity was strongest between each cerebral hemisphere and its ipsilateral thalamus. However, each hemisphere was also strongly correlated with the contralateral thalamus, a pattern that is not attributable to known thalamocortical monosynaptic connections. These results extend our understanding of the intrinsic network organization of the human brain to the thalamus and highlight the potential of resting-state fMRI BOLD imaging to elucidate thalamocortical relationships.

scholarly journals Gender Differences in Cerebral Regional Homogeneity of Adult Healthy Volunteers: A Resting-State fMRI Study

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Chunsheng Xu ◽  
Chuanfu Li ◽  
Hongli Wu ◽  
Yuanyuan Wu ◽  
Sheng Hu ◽  
...  
Keyword(s):  
Gender Differences ◽  
Cerebral Cortex ◽  
Healthy Volunteers ◽  
Resting State ◽  
Brain Activity ◽  
Resting State Fmri ◽  
Regional Homogeneity ◽  
Female Group ◽  
Precentral Gyrus ◽  
Sensorimotor Network

Objective.We sought to use the regional homogeneity (ReHo) approach as an index in the resting-state functional MRI to investigate the gender differences of spontaneous brain activity within cerebral cortex and resting-state networks (RSNs) in young adult healthy volunteers.Methods.One hundred and twelve healthy volunteers (56 males, 56 females) participated in the resting-state fMRI scan. The ReHo mappings in the cerebral cortex and twelve RSNs of the male and female groups were compared.Results.We found statistically significant gender differences in the primary visual network (PVN) (P<0.004, with Bonferroni correction) and left attention network (LAtN), default mode network (DMN), sensorimotor network (SMN), executive network (EN), and dorsal medial prefrontal network (DMPFC) as well (P<0.05, uncorrected). The male group showed higher ReHo in the left precuneus, while the female group showed higher ReHo in the right middle cingulate gyrus, fusiform gyrus, left inferior parietal lobule, precentral gyrus, supramarginal gyrus, and postcentral gyrus.Conclusions.Our results suggested that men and women had regional specific differences during the resting-state. The findings may improve our understanding of the gender differences in behavior and cognition from the perspective of resting-state brain function.

scholarly journals Organization of state transitions in the resting-state human cerebral cortex

2018 ◽  
Author(s):  
Jiyoung Kang ◽  
Chongwon Pae ◽  
Hae-Jeong Park
Keyword(s):  
Cerebral Cortex ◽  
Transition State ◽  
Resting State ◽  
State Transition ◽  
The State ◽  
State Transitions ◽  
Local Minima ◽  
Stable States ◽  
Human Cerebral Cortex ◽  
Cortical System

AbstractThe resting-state brain is often considered a nonlinear dynamic system transitioning among multiple coexisting stable states. Despite the increasing number of studies on the multistability of the brain system, the processes of state transitions have rarely been systematically explored. Thus, we investigated the state transition processes of the human cerebral cortex system at rest by introducing a graph-theoretic analysis of the state transition network. The energy landscape analysis of brain state occurrences, estimated using the pairwise maximum entropy model for resting-state fMRI data, identified multiple local minima, some of which mediate multi-step transitions toward the global minimum. The state transition among local minima is clustered into two groups according to state transition rates and most inter-group state transitions were mediated by a hub transition state. The distance to the hub transition state determined the path length of the inter-group transition. The cortical system appeared to have redundancy in inter-group transitions when the hub transition state was removed. Such a hub-like organization of transition processes disappeared when the connectivity of the cortical system was altered from the resting-state configuration. In summary, the resting-state cerebral cortex has a well-organized architecture of state transitions among stable states, when evaluated by nonlinear systematic approach.

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