Results 241 to 250 of about 1,585,655 (272)
Mapping Ventricular Expansion Onto Cortical Gray Matter in Older Adults [PDF]
Neurobiology of Aging, 2015 Dynamic changes in the brain's lateral ventricles on magnetic resonance imaging are powerful biomarkers of disease progression in mild cognitive impairment (MCI) and Alzheimer's disease (AD). Ventricular measures can represent accumulation of diffuse brain atrophy with very high effect sizes.
Boris A Gutman +2 more
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A Computational Method for Longitudinal Mapping of Orientation-Specific Expansion of Cortical Surface Area in Infants [PDF]
Proceedings (International Symposium on Biomedical Imaging), 2018 The cortical surface of the human brain expands dynamically and regionally heterogeneously during the first postnatal year. As all primary and secondary cortical folds as well as many tertiary cortical folds are well established at term birth, the ...
Li Wang, Weili Lin, Dinggang Shen
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Learning-induced expansion of cortical maps – what happens to adjacent cortical representations?
NeuroReport, 1998The present study was designed to investigate the effects of learning-dependent enlargement of cortical representation of a row of vibrissae upon the appearance of adjacent cortical representations. We have found previously that three sessions of classical conditioning, during which stimulation of row B of vibrissae is paired with a tail shock, result ...
M, Kossut, E, Siucinska
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RECOVERY OF SWALLOWING FUNCTION IS ACCOMPANIED BY THE EXPANSION OF THE CORTICAL MAP
International Journal of Neuroscience, 2007To determine whether multiple sessions of electrical stimulation (ES) applied to neck muscles improve swallowing function and whether this improvement is accompanied by cortical reorganization in patients with dysphagia, before-after trials were performed on eight subjects. ES was applied for 1 hour, 5 days a week for 2 weeks.
Byung-Mo, Oh +2 more
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Mechanisms of amoeboid chemotaxis: An evaluation of the cortical expansion model
Developmental Genetics, 1990AbstractIn this work we evaluate the cartical expansion model for amoeboid chemo‐taxis with regard to new information about molecular events in the cytoskeleton following chemo‐tactic stimulation of Dictyostelium amoebae. A rapid upshift in the concentration of chemoattrac‐tant can be used to synchronize the motile behavior of a large population of ...
J, Condeelis +7 more
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3D Eigenfunction Expansion of Sparsely Sampled 2D Cortical Data [PDF]
2009 IEEE International Symposium on Biomedical Imaging: From Nano to Macro, 2009 Various cortical measures such as cortical thickness are routinely computed along the vertices of cortical surface meshes. These metrics are used in surface-based morphometric studies. If one wishes to compare the surface-based morphometric studies to 3D volume-based studies at a voxel level, 3D interpolation of the sparsely sampled 2D cortical data is
Yu-Chien Wu +2 more
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The Expansion of the Cortical Sheet in Primates
2017The cortical sheet has expanded extensively during mammalian evolution. It is characterized by a large number of neurons arranged in six layers. While there are significant regional differences, the upper layers have been particularly enlarged in primates. The neurons and glia of the mature neocortex are generated by different types of progenitor cells
S. Mayer, A.R. Kriegstein
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3rd IEEE International Symposium on Biomedical Imaging: Macro to Nano, 2006., 2006
Focal cortical dysplasia (FCD), a malformation of cortical development, is an important cause of intractable epilepsy. On magnetic resonance images (MRI), FCD lesions are difficult to distinguish from healthy cortex and defining their spatial extent is challenging.
Colliot, Olivier +4 more
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Focal cortical dysplasia (FCD), a malformation of cortical development, is an important cause of intractable epilepsy. On magnetic resonance images (MRI), FCD lesions are difficult to distinguish from healthy cortex and defining their spatial extent is challenging.
Colliot, Olivier +4 more
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Cortical evolution: No expansion without organization
Behavioral and Brain Sciences, 2003Aboitiz et al. describe a hypothesis on the origin of the isocortex. They propose the reptilian dorsal cortex to be the ancestral brain structure to the mammalian isocortex. But why did the dorsal cortex expand in mammals and not in reptiles? A change in development may have provided the mammalian cortex with the ability to organize and therefore the ...
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