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Implications of Inconsistencies between fMRI and dMRI on Multimodal Connectivity Estimation
[chapter]
2013
Lecture Notes in Computer Science
Preserved Fulltext
In this paper, we show on a cohort of 60 subjects that conventional functional connectivity (FC) estimates based on Pearson's correlation and anatomical connectivity (AC) estimates based on fiber counts ...
Importantly, we illustrate that these inconsistencies can be useful in fMRI-dMRI integration for improving brain connectivity estimation. ...
This manuscript reflects only the authors' views and the Community is not liable for any use that may be made of the information contained therein. ...
doi:10.1007/978-3-642-40760-4_81
fatcat:jfrixabmenebxbuuhrnl4pjofu
Large-scale functional coactivation patterns reflect the structural connectivity of the medial prefrontal cortex
2020
Social Cognitive and Affective Neuroscience
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Additionally, using connectivity and coactivation similarity analyses, we found high correspondence in voxel-to-voxel similarity between each modality across most, but not all, subregions of the MPFC. ...
Yet, this region is also highly functionally heterogeneous across many domains and has diverse patterns of connectivity. ...
indirect measurement of underlying brain measurements for both fMRI and dMRI data. ...
doi:10.1093/scan/nsaa132
pmid:32986092
pmcid:PMC8343558
fatcat:inzxjqjqqnbwnjr5tr7irkclby
A High-Throughput Pipeline Identifies Robust Connectomes But Troublesome Variability
[article]
2017
bioRxiv
pre-print
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connections and stronger homotopic than heterotopic connections. ...
Modern scientific discovery depends on collecting large heterogeneous datasets with many sources of variability, and applying domain-specific pipelines from which one can draw insight or clinical utility ...
Acknowledgements The authors from JHU are grateful for the support by the XDATA program of the Defense Ad- ...
doi:10.1101/188706
fatcat:bid6oqdi5zay3e3anbkxg3se3q
Integrative Models of Brain Structure and Dynamics: Concepts, Challenges, and Methods
2021
Frontiers in Neuroscience
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On the other hand, models of large-scale oscillatory dynamics conditioned on network structure (such as the one estimated from dMRI connectivity) provide a platform to probe into the structure-dynamics ...
Studies empirically investigating such relationships on the whole-brain level rely on macroscopic measurements of structural and functional connectivity estimated from various neuroimaging modalities such ...
AUTHOR CONTRIBUTIONS SV and JV contributed to the conception of this work and manuscript revision. SV wrote the first draft of the manuscript. Both authors approved the submitted version. ...
doi:10.3389/fnins.2021.752332
pmid:34776853
pmcid:PMC8585845
fatcat:rgcwmry7tjfa3ciqo6fggnnaea
Abnormal reward circuitry in anorexia nervosa: A longitudinal, multimodal MRI study
2016
Human Brain Mapping
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Diffusion and restingstate functional MRI scans were collected in female inpatients with AN (n =22) and healthy controls (HC; n =18) between the ages of 16 and 25 years. ...
Based on univariate and multivariate analyses of fronto-accumbal circuitry, underweight individuals with AN were found to have increased structural connectivity (diffusion probabilistic tractography), ...
of 0.05 (based on an estimated smoothness (FWHM) of 2.46 mm and a 1 m 3 isometric voxel dimension; smoothness was estimated on a z-score map using smoothest program in FSL). ...
doi:10.1002/hbm.23279
pmid:27273474
pmcid:PMC5448464
fatcat:7nekyqxyavahtdhjkq2ycxpapi
The superior longitudinal fasciculus and its functional triple-network mechanisms in brooding
2019
NeuroImage: Clinical
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Using diffusion and functional Magnetic Resonance Imaging, we explored multimodal relationships between brooding severity, white-matter microstructure, and resting-state functional connectivity in depressed ...
Finally, microstructure of the right SLF and auxiliary white-matter is associated with the functional connectivity correlates of brooding, both within and between components of the triple-network (Discovery ...
The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. ...
doi:10.1016/j.nicl.2019.101935
pmid:31352219
pmcid:PMC6664225
fatcat:4atoobljrvgefeqe4n7hq7onfi
Disrupted structural and functional brain connectomes in mild cognitive impairment and Alzheimer's disease
2014
Neuroscience Bulletin
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Alzheimer's disease (AD) is the most common type of dementia, comprising an estimated 60-80% of all dementia cases. ...
In this review, we summarize the recent progress of brain connectomics in AD and MCI, focusing on the changes in the topological organization of large-scale structural and functional brain networks using ...
from diffusion MRI (dMRI) or the time-course from EEG/MEG/fMRI. ...
doi:10.1007/s12264-013-1421-0
pmid:24733652
pmcid:PMC5562665
fatcat:kvzynxconrgf7f3qzwvhzc2ws4
The Human Connectome Project's neuroimaging approach
2016
Nature Neuroscience
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Widespread adoption of this paradigm should accelerate progress in understanding the brain in health and disease. ...
, blurring, and temporal artifacts; (4) represent data using the natural geometry of cortical and subcortical structures; (5) accurately align corresponding brain areas across subjects and studies; (6) ...
We thank the other investigators and staff members of the Human Connectome Project consortium for invaluable contributions to data acquisition, analysis, and sharing. ...
doi:10.1038/nn.4361
pmid:27571196
fatcat:wwg4h7gmw5eshc5bc3zsmt6zmy
A Reproducible Triple-Network Neurobiology of Depressive Rumination
[article]
2018
bioRxiv
pre-print
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Using diffusion MRI and resting-state BOLD fMRI, we explored multimodal relationships between DR, WM microstructure, and triple-network functional connectivity in adults with MDD (N = 39), and then replicated ...
, (b) functional network connectivity of the Cingulo-Opercular SN (coSN), Precuneal DMN (pDMN), and frontal ECN (fECN), (c) inverse correlations between the pDMN and each of the coSN and fECN, and (d) ...
As in the case of inconsistent directionality across samples for the coSN within-network connectivity findings, however, the expression of between-network connectivity patterns of coSN with the other triplenetwork ...
doi:10.1101/365759
fatcat:yxuizrcw7nckjibw65lt4zqnna
The NonHuman Primate Neuroimaging & Neuroanatomy Project
2021
NeuroImage
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Studies using nonhuman primates (NHPs) enable comparisons between invasive and non-invasive measures, including exploration of how "functional connectivity" from fMRI and "tractographic connectivity" from ...
We are using classical and next-generation anatomical tracers to generate quantitative connectivity maps based on brain-wide counting of labeled cortical and subcortical neurons, providing ground truth ...
Acknowledgements
This study is supported by a grant Brain/MINDS -beyond from
References under revision of this special issue of NeuroImage Autio, J.A., Zhu, Q., Li, X., Glasser, M.F., Schwiedrzik, ...
doi:10.1016/j.neuroimage.2021.117726
pmid:33484849
pmcid:PMC8079967
fatcat:tfv3sm6xpjfnfj2uarpqwnyc5u
The NonHuman Primate Neuroimaging Neuroanatomy Project
[article]
2021
arXiv
pre-print
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We are using classical and next-generation anatomical tracers to generate quantitative connectivity maps based on brain-wide counting of labeled cortical and subcortical neurons, providing ground truth ...
measures of connectivity. ...
between laminae in surface-based group analysis if one only considers geometric constraints (note that the separability of lamina also depends on the point-spread-function of BOLD fMRI or other fMRI approaches ...
arXiv:2010.00308v3
fatcat:xqccnaz2hzcs7pqedcutkvktea
Building connectomes using diffusion MRI: why, how and but
2017
NMR in Biomedicine
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Such features impose limits on the biological specificity of dMRI-derived quantities and motivate new developments and shifts in current connectivity mapping paradigms. 87. ...
map of extrinsic connections between functionally specialized brain regions. ...
AZ is supported by a fellowship from the National Health and Medical Research Council of Australia (APP1047648). We would also like to thank Alfred Anwander and Saad Jbabdi for useful discussions. ...
doi:10.1002/nbm.3752
pmid:28654718
fatcat:2adafayqyzbgbdr6n3vlj2kcwi
Structural and functional brain changes following four weeks of unimanual motor training: evidence from fMRI-guided diffusion MRI tractography
[article]
2016
bioRxiv
pre-print
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FA also increased in white matter connections between the right middle frontal gyrus and both right caudate nucleus (17/22 participants; p<0.05 FWE) and right supplementary motor area (18/22 participants ...
Here we extend these findings by employing diffusion MRI to investigate white-matter changes in the corticospinal tract, basal-ganglia, and connections of the dorsolateral prefrontal cortex. ...
In brief, dMRI data underwent extensive preprocessing, and constrained spherical deconvolution was used to estimate fibre orientation distributions. ...
doi:10.1101/088328
fatcat:emq2seysp5gfhcvxaqqfwqrl7q
Anterior hippocampal dysconnectivity in posttraumatic stress disorder: a dimensional and multimodal approach
2017
Translational Psychiatry
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In this study, we used a multimodal approach, along with graph-based measures of global brain connectivity (GBC) termed functional GBC with global signal regression (f-GBCr) and diffusion GBC (d-GBC), ...
Moreover, prefrontal global connectivity may be of clinical value as a brain biomarker to potentially distinguish between PTSD subgroups. ...
The sponsors had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript. ...
doi:10.1038/tp.2017.12
pmid:28244983
pmcid:PMC5545643
fatcat:s3gr5el3jbdyhfqqmayy3fwjo4
The Developing Human Connectome Project Neonatal Data Release
2022
Frontiers in Neuroscience
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It has collected 1228 multimodal magnetic resonance imaging (MRI) brain datasets from 1173 fetal and/or neonatal participants, together with collateral demographic, clinical, family, neurocognitive and ...
We now describe the dHCP image acquisition and processing protocols, summarize the available imaging and collateral data, and provide information on how the data can be accessed. ...
We also acknowledge the support of the Neonatal Intensive Care Unit and the Newborn Imaging Centre at Evelina London Children's Hospital. ...
doi:10.3389/fnins.2022.886772
fatcat:ypl63g2tmzdjzh65mxghxs5f3q
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