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 15 of 15 for “"gray matter volume"”.
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Optimism and the brain: trait optimism mediates the protective role of orbitofrontal cortex gray matter volume against anxiety
… with anxiety. At the brain level, reduced volume in orbitofrontal cortex (OFC) has been linked to increased vulnerability to anxiety, whereas intact functioning of the same region seems to promote resilience and is associated with trait optimism. However, so far it is not clear whether …
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Visual Perception in Children with Spina Bifida Myelomeningocele and the Impact of Posterior Cortical Changes
… 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 groups were more …
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Neurobiological aspects of social anxiety disorder
… SAD using a cortical thickness and subcortical gray matter volume analysis.
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Neuro-zika: Brain structure and functional organization of adult humans with zika virus infection and severe neurological complications
… impact on the brain. Neuroimaging revealed gray matter volume reductions bilaterally in motor areas (supplementary motor cortex, specifically Frontal Eye Fields) and beyond (left inferior frontal sulcus). Additionally, gray matter volume increased in right middle frontal gyrus. Functional …
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Physical Activity and Brain Health in Older Latino Adults: Is There a Moderating Role of Acculturation
… activity and brain structure, specifically total gray matter and white matter volumes in older Latino adults without dementia. Using cross-sectional data from 55 participants in the RADC Latino Core study, MRI results showed that social-based acculturation significantly influenced the association …
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Structure of the Rat Medial Prefrontal Cortex Is Influenced by Sex Across the Lifespan
… development and aging of sex differences in the volume, neuron number and glial cell number in the mPFC, as well as frontal white matter volume, were also examined in both sexes using unbiased stereological techniques. Ventral rat mPFC gray matter volume increased prior to puberty and then …
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Serum-based biomarkers and magnetic resonance imaging following mild traumatic brain injury in collegiate athletes post return-to-play
… to analyze protein levels in association with gray matter volume (GMV) and resting state functional connectivity (rsFC) following sports-related concussion. BDNF was the most effective protein at differentiating concussion from control. Significant differential relationships were found between …
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Identifying Neural, Genetic, and Behavioral Correlates of the p Factor
… show reduced structural integrity of pons white matter pathways and reduced gray matter volume in the occipital lobe and left cerebellar lobule VIIb, which is functionally connected with prefrontal regions supporting cognitive control. Consistent with the preponderance of cerebellar afferents …
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Executive Functioning as a Mediator of Relations Between Neural Structure and General Psychopathology in Pre-Adolescents
… mediation of 87 cortical and subcortical gray matter volume (GMV) regions was conducted utilizing structural equation modeling (SEM) controlling for age, sex, total intracranial volume, and image quality. Results indicated that WM was significantly associated with all psychopathology …
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Effect of scan time on resting state parameters
… analysis is performed on the whole brain, gray matter volume, and two previously established RSNs: the default mode network (DMN) and the visual system network, for all the subjects in this study. Pearson's correlation coefficients (r-values) are calculated from each subject. The entire …
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Investigating the relationship between cognitive control and speech-in-noise recognition in tinnitus from perceptual, neuroanatomical, and electrophysiological aspects
… the relationship between SiN performance and gray matter volume in auditory and cognitive processing regions in individuals with tinnitus. Lastly, using electroencephalogram to record brain activity during Go/Nogo tasks, the third study examined whether event-related potentials related to …
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Gray matter covariance networks in the mouse brain
The presence of networks of correlation between gray matter volumes of brain regions - as measured across subjects in a group of individuals - has been consistently described in several human studies, an approach termed structural covariance MRI (scMRI). Complementary to prevalent brain …
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Influence of Age and Cognitive Reserve on Cognitive Function in HIV-infected South African Adults
… by CRIq scores, fractional anisotropy, white and gray matter volume, education level, and IQ score), both independently and in interaction, will have significant effects on cognitive test performance (i.e., that increasing age and lower levels of cognitive reserve will be independently associated …
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High-level Cognitive and Neural Contributions to Conscious Experience and Metacognition in Visual Perception
… partly attributed to individual variability in gray matter volume of regions of anterior prefrontal cortex previously linked to visual metacognition. We interpret these results as suggesting that limited prefrontal resources can be dynamically allocated to support the performance of either …
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Modelling the pathophysiology of schizophrenia and methamphetamine-induced psychosis: A structural magnetic resonance imaging and cytokine study
… cortex and decreased hippocampus and amygdala volume, and there is evidence of increased TNF-α and interleukin (IL)-1β concentrations compared to healthy controls. However, no studies to date have 1) compared structural findings in SCZ and MAP, 2) investigated the associations of psychotic …