نتایج جستجو برای: brain lobes
تعداد نتایج: 480428 فیلتر نتایج به سال:
Background: Investigating various postnatal parameters of cerebral hemispheres is great practical value. Objective: To study gender differences in hemispheric and interhemispheric interactions preadolescent children. Materials methods: The retrospective assessed archived brain magnetic resonance images 60 eight-year-old boys girls. analyzed were as follows: 1) length; 2) width; 3) height; 4) wi...
A case of neonatal hypoglycemia with extensive occipital cortical loss is presented. Imaging studies revealed a predominance of brain parenchymal loss in the occipital lobes bilaterally with nearly complete absence of cortex in the posterior parietal and occipital regions and generalized thinning of the cortex throughout the brain.
AIM To evaluate localization of certain zones of craniocerebral trauma and determine their importance for genesis ofposttraumatic epilepsy. PATIENTS AND METHODS Study encompassed 50 war veterans, with craniocerebral trauma and posttraumatic epilepsy. Control group included 50 war veterans, with war craniocerebral injury who have not experienced epileptic seizures. The craniocerebral trauma zo...
We used voxel-based morphometry (VBM) to examine human brain asymmetry and the effects of sex and handedness on brain structure in 465 normal adults. We observed significant asymmetry of cerebral grey and white matter in the occipital, frontal, and temporal lobes (petalia), including Heschl's gyrus, planum temporale (PT) and the hippocampal formation. Males demonstrated increased leftward asymm...
Roles for Eph receptor tyrosine kinase and ephrin signaling in vertebrate brain development are well established. Their involvement in the modulation of mammalian synaptic structure and physiology is also emerging. However, less is known of their effects on brain development and their function in adult invertebrate nervous systems. Here, we report on the characterization of Eph receptor and eph...
A recently identified variant within the fat mass and obesity-associated (FTO) gene is carried by 46% of Western Europeans and is associated with an approximately 1.2 kg higher weight, on average, in adults and an approximately 1 cm greater waist circumference. With >1 billion overweight and 300 million obese persons worldwide, it is crucial to understand the implications of carrying this very ...
UNLABELLED Genetic or environmental influences on cerebral glucose metabolism are unknown. We attempted to reveal these influences in elderly twins by means of (18)F-FDG PET. METHODS (18)F-FDG uptake was studied in 40 monozygotic and 18 dizygotic volunteer twin pairs aged 30 y or over. We also created 18 control pairs by pairing age- and sex-matched genetically unrelated subjects from dizygot...
When correlating brain size and structure with behavioural and environmental characteristics, a range of techniques can be utilised. This study used gobiid fishes to quantitatively compare brain volumes obtained via three different methods; these included the commonly used techniques of histology and approximating brain volume to an idealised ellipsoid, and the recently established technique of...
The planarian brain has an inverted-U shaped structure with functional regionalization. To investigate how each region in the brain connects to each other, we traced neural projections by microinjection of fluorescence dye tracers. We found that external light and olfactory/taste signals received in the head region are conveyed in the main lobes (sponge region) of the brain. Chemosensory neuron...
purpose: suitable magnetic resonance imaging (mri) techniques from conventional to new devices can help physicians in diagnosis and follow up of multiple sclerosis (ms) patients. the aim of present research was to compare effectiveness of fluid attenuation inversion recovery (flair) sequence of conventional mri and diffuse weighted imaging (dwi) sequence as a new technique in detection of brain...
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