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.
Results
Showing 1 to 10 of 10 for “"gyrification"”.
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Cortical Gyrification in Methamphetamine Associated Psychosis: A Potential Neurodevelopmental Biomarker for Risk of Psychosis
… The current study investigated global and local gyrification indices (GI) as a potential neurodevelopmental biomarker for psychosis vulnerability in three quasi-experimental groups; methamphetamine users without psychosis (n=21), individuals with MAP (n=18) and healthy controls (n=21). …
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Brain morphometry of HIV-infected children on early antiretroviral therapy (ART) from age 5 to 9 years
… 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 effects may be studied using …
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Effects of HIV and different anti-retroviral therapy (ART) regimes on brain structure in HIV infected children at age 7
… 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 performed between and within HIV …
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Magnetic resonance imaging and surface-based analysis techniques to quantify growth of the developing brain
… syndrome. To understand the mechanism of gyrification, and to illuminate the underlying causes of abnormal folding, objective, quantitative methods to characterize normal and abnormal development must be developed. The ferret is an excellent model in which to study the development of …
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Structural brain connectivity of HIV-positive children: a graph network analysis study
… group. Cortical thickness, surface area and gyrification were positively associated with CD4 count as a marker of disease severity. In conclusion, this project demonstrated abnormal brain structure and structural connectivity of brain structure in regions involved with motor development, …
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Overlapping phenotypes - a clinical and magnetic resonance imaging investigation of schizotypy and pervasive developmental disorders in adolescents with cognitive impairment
… callosum area and prefrontal lobe volume and gyrification index (GI) were measured using automated, semi-automated and manual region of interest techniques. The subjects in special education were considered in different groupings in three main analyses. In the first, the SIS was used to divide …
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Neurobiological mechanisms of hallucinations in schizophrenia
… used structural covariance networks of the local gyrification index to investigate how specific sulcal deviations relate to global neurodevelopmental coordination, demonstrating that hallucinations correspond to increased covariance within and between salience and auditory networks. Hypothesizing …
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Multimodal neuroimaging signatures of early cART-treated paediatric HIV - Distinguishing perinatally HIV-infected 7-year-old children from uninfected controls
… volumes (1st set), mean cortical thickness and gyrification in 68 brain regions (2nd and 3rd set) were used. For DTI data: radial (RD), axial (AD), mean (MD) diffusivities, and fractional anisotropy (FA) in each of 20 atlas regions were extracted for a total of 80 DTI features (4th set). For …
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Structural brain imaging in individuals at high familial risk of schizophrenia
… the other groups, and cortical surface area and gyrification increased compared to the other groups. An increased global surface area was also shared with the HR[ill] group, suggesting that this could be a marker that is predictive of future transition to psychosis. Within the high risk cohort, …
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Schizophrenie als Gyrifikationsstörung?
Die Schizophrenie stellt eine schwerwiegende neuropsychiatrische Erkrankung dar, deren Ätiologie und Pathomechanismen bis heute nicht vollständig geklärt sind. Es wird eine multifaktorielle Entstehung vermutet, wobei prädisponierende und auslösende Faktoren zur Manifestation der Erkrankung führen. …