Occasional users in both studies, who increased stimulant use during the subsequent 24 months displayed smaller regional grey
matter volumes compared to those who with stable or decreased use.
Not exact matches
Using brain scans to
compare the gray
matter of children with RAD to typically developing children, the researchers found significantly reduced
volume of gray
matter in the area of the brain known as the left primary visual cortex.
Through analysis of high - resolution anatomical magnetic resonance imaging of brain
volumes, taken three times over the two - year study period, the researchers were able to determine that individuals with MCI or Alzheimer's showed greater losses in gray
matter volume in both the basal forebrain and temporal lobe,
compared with cognitively normal controls.
When the investigators analysed MRI studies of the brain, they found that participants with MCI, particularly those with non-amnestic MCI, had larger white
matter lesion
volumes and worse microstructural integrity of normal - appearing white
matter compared to controls.
The MRI scans showed that obese subjects with binge eating disorder have lower grey
matter volumes — a measure of the number of neurons — in the orbitofrontal cortex and striatum of the brain
compared to those who do not binge eat; these brain regions are involved in keeping track of goals and rewards.
Comparing MRI brain images of eight Dobermans with CCD to the control group, Ogata found that the CCD group had higher total brain and gray
matter volumes, lower gray
matter densities in the dorsal anterior cingulate cortex and right anterior insula, and higher fractional anisotropy in the splenium of the corpus callosum (the degree of which correlated with the severity of the behavioral traits).
In addition, they determined that
volumes of human prefrontal gray and white
matter match the expected
volumes for the number of neurons and other cells in the white
matter when
compared to other primates.
Importantly, we found the most common finding was that there was no difference in grey
matter volume in individuals who had violent outcomes
compared to control populations, even in the prefrontal cortex and temporal lobes, which have been highlighted in the current study by Darby and colleagues.
One report found significantly greater decreases in gray
matter volume in children with autism scanned at two time points (age ~ 11 and at 30 - month follow - up)
compared with TD children (Hardan et al., 2009).
Second, the participants of our study were trained musicians — a group shown to exhibit increased grey -
matter volume in the right IFG75, higher fibre - tract
volumes between the right IFG and the temporal lobe76, and differences in BOLD - response patterns77, 78,79,
compared to non-musicians.
You first of all have to recognize that you're trying to
compare apples with oranges and not realizing that radiation is not part of the study of colligitive properties (
volume, temperature, pressure for example) which are what is the basic subject
matter of thermodynamics.
OK, if you do not own a Nexus Player you are probably wondering why does
volume matter and how can it be
compared?
Because human gray
matter follows a nonlinear developmental trajectory, we established a reference for typical development in focal brain areas and constructed an index that measured whether regional gray
matter volume was larger or smaller than expected,
comparing children with others of the same sex and age.