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 81 for “"Cortical Thickness"”.
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Cortical thickness estimation of the proximal femur from multi-view dual-energy X-ray absorptiometry
… Current risk assessment tools ignore cortical bone thinning, a focal structural defect characterizing hip fragility. Cortical thickness can be measured using computed tomography, but this is expensive and involves a significant radiation dose. Dual-energy X-ray absorptiometry (DXA) is …
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Modelling the pathophysiology of schizophrenia and methamphetamine-induced psychosis: A structural magnetic resonance imaging and cytokine study
… hippocampus and basal ganglia and frontal cortical thickness and surface area were processed with FreeSurfer. TNF-α, IL-1β, -8, -12 and IFN-γ concentrations in serum, were assessed with a Luminex assay. ANOVAs were used to compare structural findings across groups, group differences for …
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Visual Perception in Children with Spina Bifida Myelomeningocele and the Impact of Posterior Cortical Changes
… and related this performance to indices of cortical thickness, gray matter volume, and white matter volume for a subset of these participants. Results revealed weaknesses for children with SBM on both the categorical and coordinate visual perception tasks relative to controls, though both …
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Bridging the Gap - Exploring the Role of Cortisol on The Effects of Prenatal Depression on Child Neurocognition
… we assessed child executive function and cortical thickness in the right frontal and prefrontal cortices. Pregnant participants completed the Edinburgh Postnatal Depression Scale (EPDS) to assess prenatal depression, and we examined prenatal cortisol using salivary cortisol samples. …
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Brain morphometry of HIV-infected children on early antiretroviral therapy (ART) from age 5 to 9 years
… trajectories of brain morphology, including cortical thickness and folding (gyrification) and sub-cortical volumes may be related to the observed neurocognitive deficits during a critical period of brain development spanning from mid-childhood into early adolescence (age 5 -13 years). The …
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Smoking Status, Cognition, and Neurobiology in Schizophrenia
… association with cognition and regional cortical thickness in 71 patients and 63 nonpsychiatric control participants. Cognition was measured with the MATRICS Consensus Cognitive Battery (MCCB) and social cognition was measured with the Faux Pas and Reading the Mind in the Eye tasks. The …
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The Quantitative Genetics of Neurodevelopment: A Magnetic Resonance Imaging Study of Childhood and Adolescence
… levels of resolution, voxel-level analysis of cortical thickness, assessment of gene by age interaction, several multivariate genetic analyses, and a search for genetically-mediated brain-behavioral relationships. These analyses found strong evidence for a genetic role in the generation of …
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Delay and probability discounting: a longitudinal study of neural, cognitive, and emotional processes contributing to adolescent development.
… behavior were analyzed. These included cortical thickness, white matter volume, subcortical volume, and diffusion tensor imaging (DTI) measures including fractional anisotropy and mean diffusivity. Delay discounting, but not probability discounting, showed significant maturation within …
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Investigating the Functional and Structural Neural Correlates Associated With Dance Expertise
… Anatomically, dancers exhibited greater cortical thickness in areas such as the inferior occipital gyrus, inferior frontal gyrus, and superior temporal gyrus. We also found years of dance training to be correlated with cortical thickness in various regions, including positive correlations …
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Brain Structure in Older Adult Siblings
… of gray and white matter volumes and cortical thickness in a sample of older adult full siblings: 2-4 individuals per pedigree; N = 75). Estimation of heritability was based on computation of intraclass correlations. Heritability estimates were higher for total cortical thickness …
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Effects of HIV and different anti-retroviral therapy (ART) regimes on brain structure in HIV infected children at age 7
… (http://freesurfer.net/) to generate measures of cortical thickness, local gyrification index (LGI), and regional (corpus callosum, bilateral caudate, hippocampus, putamen, thalamus, and lateral ventricle) and global brain volumes. Vertex-wise and region of interest (ROI) comparisons were …
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Quantitative volumetric study of brain in chronic striatolenticular stroke
… the striato-capsular region on cerebral cortex thickness and also its association with stroke volume and different functional tests. We hypothesized that because of extensive connections of striatum and internal capsule with the cerebral cortex, infarction of this area results in an extensive …
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Neurobiological aspects of social anxiety disorder
… and explores the structural basis of SAD using a cortical thickness and subcortical gray matter volume analysis.
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Effects of Chemotherapy on Bone Mineral Density in a Post-Mortem Context
… to determine bone mineral density, trabecular thickness, and cortical thickness for each element. There is no statistically significant difference between the trabecular and cortical thickness between donor groups. The average bone mineral density is statistically significantly greater for the …
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The structural neurobiology of social anxiety disorder : a clinical neuroimaging study
… to compute the volume of the most prominent subcortical gray matter structures implicated in SAD by previous functional research. Cortical thickness was estimated using an automated algorithm and whole brain analyses of white matter structure were performed using FSL's tract - based spatial …
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MRI for gray matter: statistical modelling for in-vivo application and histological validation of dMRI
… showed that in GM, while sMRI measures like cortical thickness and GM volume are mainly affected by genetic factors, advanced dMRI measures of mean squared displacement (MSD) and return to origin probability (RTOP) derived from advanced biexponential model can tap into regionally specific …
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Sex differences in the cortex of the rat: The cellular basis
… rats at 90 days of age. Sex differences in cortical size were found to be widespread across the cortical mantle; however, the expression of sex differences was specific to region and lamina. Asymmetries in cortical thickness were found in a few areas but did not vary with the sex. The …
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The impact of stress on the prefrontal cortex: a view of how socioeconomic status impacts executive function
… the Hypothalamus-Pituitary-Adrenal (HPA) axis on cortical development as a promising explanation. Children raised in low SES backgrounds are exposed to a multitude of environmental stressors that can impact the child’s development of their stress response and regulation within the HPA axis. …
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Cortical thinning and neuropsychological changes in presymptomatic Huntington's Disease
… in Huntington‘s Disease (HD). Advances in cortical thickness mapping (an automated MRI method for precisely measuring the cortical thickness across the entire cortex) provide a new technique for examining changes in the brain in HD. Recent studies using this technology have reported …
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The independent and combined effects of rapamycin and metformin on naturally occurring osteoarthritis
… controls. Rap treatment also reduced subchondral cortical bone thickness in the medial and lateral tibia, while Rap+Met reduced cortical thickness only in the lateral tibia. Both OA scores and cortical thickness were highly correlated with bodyweight, suggesting reduced joint loading could be …
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