منابع مشابه
Human cortical folding and variability
Cortical complexity, a measure that quantifies the spatial frequency of the folding of the human brain is not well defined. Neither has it been thoroughly characterized with respect to inter-individual differences, nor has its evolution been successfully modelled. Using a new three-dimensional analysis technique with magnetic resonance (MR) imaging, this dissertation presents a novel method to ...
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تعداد 20 رأس میش نژاد نائینی 6+-24 ماهه، با میانگین وزن 2/3-+40 کیلوگرم، همراه با 20 رأس بره های آنها در قالب طرح کاملا تصادفی اثر بتائین و مکمل سولفات بر خصوصیات شیر و پشم و عملکرد بره ها بررسی شد. میش ها بطور تصادفی در چهار تیمار قرار گرفتند. تیمارها عبارت بودند از: 1-گروه شاهد 2-بتائین (05/0 درصد ماده خشک) 3-سولفات (24/0 سولفور درصد ماده خشک 4-بتائین هرماه با سولفات. جیره غذائی طبق nrc با مح...
15 صفحه اولCortical Folding Patterns and Predicting Cytoarchitecture
The human cerebral cortex is made up of a mosaic of structural areas, frequently referred to as Brodmann areas (BAs). Despite the widespread use of cortical folding patterns to perform ad hoc estimations of the locations of the BAs, little is understood regarding 1) how variable the position of a given BA is with respect to the folds, 2) whether the location of some BAs is more variable than ot...
متن کاملReduced cortical folding in mental retardation.
BACKGROUND AND PURPOSE MR is a developmental disorder associated with impaired cognitive functioning and deficits in adaptive behavior. With a 2D region of interest-based GI, a preliminary study reported significantly reduced gyrification in the prefrontal lobe in MR. The purpose of this study was to further investigate the abnormalities of cortical gyrification in MR and to explore the possibl...
متن کاملUniversality in human cortical folding in health and disease.
The folding of the cortex in mammalian brains across species has recently been shown to follow a universal scaling law that can be derived from a simple physics model. However, it was yet to be determined whether this law also applies to the morphological diversity of different individuals in a single species, in particular with respect to factors, such as age, sex, and disease. To this end, we...
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ژورنال
عنوان ژورنال: Nature Reviews Neuroscience
سال: 2007
ISSN: 1471-003X,1471-0048
DOI: 10.1038/nrn2008-c1