نتایج جستجو برای: voxel based morphometry
تعداد نتایج: 2944555 فیلتر نتایج به سال:
Structural brain measures are employed as endophenotypes in the search for schizophrenia susceptibility genes. We analyzed two independent structural imaging datasets with voxel-based morphometry and with source-based morphometry, a multivariate, independent components analysis, to determine the stability and heritability of regional gray matter concentration abnormalities in schizophrenia. The...
There is currently little understanding on whether significant word retrieval difficulties appear during midlife and if so, whether they relate to decrease in grey matter (GM) density that accompanies aging. To answer this question, we studied retrieval of proper names in 125 cognitively healthy middle-aged persons (49.7, ±3.2) comparing their performance on a tip-of-the-tongue (TOT) task with ...
In recent years, a whole-brain unbiased objective technique, known as voxel-based morphometry (VBM), has been developed to characterise brain differences in vivo using structural magnetic resonance images. The present review provides a brief description of VBM and then focuses on exemplar applications in healthy and diseased subjects. The procedure involves normalising high-resolution structura...
BACKGROUND Mild cognitive impairment (MCI) is the most widely used concept in classifying cognitive impairment in the elderly who do not fulfil the criteria for dementia. MCI is considered to confer an increased risk of progressing to dementia and most often Alzheimer's disease (AD). Various approaches such as imaging of the brain have been applied to predict the conversion of MCI to dementia. ...
Dehydration can affect the volume of brain structures, which might imply a confound in volumetric and morphometric studies of normal or diseased brain. Six young, healthy volunteers were repeatedly investigated using three-dimensional T(1)-weighted magnetic resonance imaging during states of normal hydration, hyperhydration, and dehydration to assess volume changes in gray matter (GM), white ma...
Human time perspective and its structural associations with voxel-based morphometry and gyrification
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