نتایج جستجو برای: corpus callosum
تعداد نتایج: 67166 فیلتر نتایج به سال:
With the increase of the life expectancy and the deterioration of the quality of life that neurodegenerative diseases can cause to the patients, they have been receiving more and more attention the last few decades in the developed countries. Two of the leading neurodegenerative diseases are Alzheimer’s Disease and Multiple Sclerosis. In diagnosis and assessment progression Magnetic Resonance I...
OBJECTIVES It remains controversial whether selective neuronal ischaemic change develops in patients with occlusion of the large cerebral arteries. Previous studies have shown atrophy of the corpus callosum with reduced cortical oxygen metabolism in large cerebral arterial occlusive diseases, which might be indirect evidence of loss of the neurons in cortical layer 3. Recent studies of patients...
BACKGROUND AND PURPOSE A decline in intrahemispheric cerebral white matter volume in children treated for brain tumors with cranial irradiation has been well documented. It was hypothesized that the development of the corpus callosum, the largest white matter commissure of the brain, would also be adversely affected after treatment with cranial irradiation in pediatric patients treated for medu...
The effect of prenatal malnutrition on the anatomy of the corpus callosum was assessed in adult rats (45-52 days old). In the prenatally malnourished animals we observed a significant reduction of the corpus callosum total area, partial areas, and perimeter, as compared with normal animals. In addition, the splenium of corpus callosum (posterior fifth) showed a significant decrease of fiber dia...
The corpus callosum is the principal cerebral commissure connecting the right and left hemispheres. The development of the corpus callosum is under tight genetic control, as demonstrated by abnormalities in its development in more than 1,000 genetic syndromes. We recruited more than 25 families in which members affected with corpus callosum hypoplasia (CCH) lacked syndromic features and had con...
This study examines the corpus callosum in 68 readers nested in 24 families. Callosa were measured and controlled for whole brain volume, intelligence, and gender. The relation of corpus callosum size to the within-family variance of oral reading was investigated with various measurements: volume, midsagittal area, and anterior-to-posterior one-fifth area segmentations. Because this is the firs...
An optical coherence tomography (OCT) system employing a microelectromechanical system (MEMS) mirror was used to measure the refractive index (RI) of anatomically different regions in acute brain tissue slices, in which viability was maintained. RI was measured in white-matter and grey-matter regions, including the cerebral cortex, putamen, hippocampus, thalamus and corpus callosum. The RI in t...
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