Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 38 for “"structural connectivity"”.
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Deep Learning for Brain Structural Connectivity Analysis: From Tissue Segmentation to Tractogram Alignment
… diffusion MRI (dMRI) for the computation of the structural connectivity of the brain. In particular, from the processing of dMRI data, it is possible to investigate the structures of WM through tractography techniques, obtaining a virtual representation of the WM pathways called tractogram. Since …
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Maximizing utility of clinical trial neuroimaging data using advances in reproducible processing pipelines - benefits of modern diffusion reconstruction and structural connectivity methods
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01
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Structural brain connectivity of HIV-positive children: a graph network analysis study
… demonstrated significant disruptions to brain connectivity in older HIV+ adults on treatment. However, no previous studies have investigated the same topological organization or structural connectivity of brain structure in infected children, or correlated this with markers of disease severity. …
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Longitudinal Changes in Resting-State Connectivity after Traumatic Axonal Injury
Little is known about neural network connectivity immediately after a traumatic axonal injury (TAI). This is the first longitudinal study in TAI to examine functional connectivity in the Default Mode Network (DMN) and Central Executive Network (CEN) within 48 hours after traumatic brain injury with …
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Characterizing Connectivity in Brain Networks Using Magnetic Resonance Imaging
… neuroscience. Historically, the study of brain connectivity has been marked by a dichotomy between structure and function. Recent advances in magnetic resonance imaging (MRI) provide a potential framework for bridging this divide and allowing for a more complete window onto brain connectivity. …
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Brain Activation and Connectivity In Non-Disabled Multiple Sclerosis Patients
… recruitment is associated with alterations in connectivity in the working memory functional network. Patients exhibited similar network connectivity to that of control subjects when performing working memory tasks. We subsequently investigated the integrity of major white matter tracts to …
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Structural and Functional Properties of Social Brain Networks in Autism and Social Anxiety
… to precisely characterize the topology of neural connectivity within the DMN in SAD and ASD and neurotypical controls in order to test the following hypotheses through functional and structural connectivity analyses of the DMN. Our analyses demonstrate increased coavtivation of the dorsomedial …
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Relationship of brain functional, structural and vascular patterns to cognition in ageing and dementia
… processes of neurodegeneration which involve structural, cerebrovascular and functional changes. In this dissertation, I investigated the following questions: 1) Can we explain the relationship between brain architecture and cognition by the integration, or dissociation, of structural …
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A Bayesian model for dynamic functional connectivity estimation in the human brain with structural priors
Studies of dynamic functional connectivity have demonstrated that anatomical linkage is related to persistent functional connectivity. Bayesian models can leverage this connection by regularizing estimates of functional connectivity according to the strength of the corresponding structural …
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Network Dynamics of Visual Object Recognition
… of cortical activation, functional and structural connectivity, and transient disruption through electrical stimulation. We found that input from early visual cortex (EVC) to two face-selective regions – the occipital and fusiform face areas (OFA and FFA, respectively) – occurred in a …
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Development Of Human Brain Network Architecture Underlying Executive Function
… are linked to the disruption of evolving brain connectivity. Network theory provides a parsimonious framework for modeling how anatomical white matter pathways support synchronized fluctuations in neural activity. However, only sparse data exists regarding how the maturation of white matter …
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The connectivity fingerprints of the frontal eye field and the inferior frontal junction
… respectively, and hypothesized that their connectivity fingerprints might underlie these roles. To accurately infer the localization of these regions in standard space, I carried out an activation likelihood estimation (ALE) fMRI meta-analysis using tasks that reliably engage these regions. …
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The Environment and Child Development: A Multivariate Approach
… mediated by a child’s cognition or the structural and functional connectivity of their brain? 7-11 year-old children (N=97) and their caregivers took part in this study. Several environmental domains and child behaviour were assessed through caregiver and child questionnaires. Academic …
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Subject-Specificity of SC-FC in the Human Brain
… how regions are connected amongst one another. Structural connectivity (SC) describes how physical pathways link areas of the brain, whereby functional connectivity (FC) describes the temporal relationships of neural activity between regions. The present body of work aims to understand …
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Stochastic Actor-Oriented Models of Functional and Structural Human Brain Networks in Aging
… the measurement of large-scale functional and structural connectivity networks in the brain. Beyond trends, the dynamics across long timescales are still poorly understood. Our research aims to address the question of these long-term dynamics by carefully adapting and applying the stochastic …
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White matter connectivity, cognition, symptoms and genetic risk factors in Schizophrenia
… is often characterised by impaired white matter structural dysconnectivity. In vivo and post-mortem alterations in white matter microstructure have been reported, along with differences in the topology of the structural connectome; overall these suggest a reduced communication between distal …
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The Neurocognitive Sequelae of Chronic Traumatic Brain Injury and the Utility of Treatment with Methylphenidate
… Resonance Imaging (MRI) technology using structural, functional, and diffusion imaging have shown utility in revealing subtle neurobiological abnormalities in patients with TBI which were previously undetectable with routine brain imaging. These have been employed here to study the …
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Structure-function relationships in human brain development
… a proof-of-principle that neuroanatomical connectivity, as measured with diffusion weighted imaging (DWI), can be used to calculate connectional fingerprints that are sufficient to delineate fine anatomical distinctions in the human brain (Chapter 2). Next, I describe the maturation of …
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Integration of multi-omic data and neuroimaging characteristics in studying brain related diseases
… the complex interplay between genetics and structural connectivity of a wide range of brain-related diseases. Nevertheless, such combinations of heterogeneous, high dimensional and inter-related data has introduced new challenges which cannot be handled with traditional statistical methods. …
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