One of our ongoing research projects involves studying the relationship
between brain structure and aptitudes.
This offers an unprecedented opportunity for research concerning individual variation and relationships
between brain structure and function relative to development and cognitive capacity in a nonhuman primate.
I am interested in the relationship
between brain structure, function, and learning capacities.
Despite the relationship
between these brain structure alterations and fine particle exposure, the average residential levels of fine particles in the study were well below the current acceptable limit set by the EU — only 0.5 percent of the pregnant women in the study were exposed to levels considered unsafe.
Another recent debate has explored correlations
between brain structure and political affinities.
Recent attention also has been devoted to investigating whether there are morphologic differences
between the brain structures of individuals with ADHD relative to their normally developing peers.
Not exact matches
She «found greater neural connectivity from front to back and within one hemisphere in males, suggesting their
brains are
structured to facilitate connectivity
between perception and coordinated action.
Studies on genes,
brain structures and hormones have failed to identify a clear link
between, on one hand, differences at birth
between the sexes and, on the other, particular behaviour.
He works by tweaking the chemical
structures of the drugs, sometimes changing just a few molecules to see what impact this might have on the interaction
between the drug and the
brain receptors their parent compounds normally act upon.
A coherent scene
structure was needed to achieve the highest correlation of activity
between viewers in parts of the
brain involved in extracting meaning (The Journal of Neuroscience, vol 28, p 2539).
However, similarities in the
brain shape
between the ancient species and diving birds living today suggest that diving behavior may be associated with certain anatomical
structures in the
brain.
Indeed, the researchers found a relationship
between place of residence and
brain health: those city dwellers living close to a forest were more likely to show indications of a physiologically healthy amygdala
structure und were therefore presumably better able to cope with stress.
A number of smallish studies have seen differences in the
brains of habitual weed smokers, including altered connectivity
between the hemispheres, inefficient cognitive processing in adolescent users, and a smaller amygdala and hippocampus —
structures involved in emotional regulation and memory, respectively.
«Severe stress affects the size of the
structures in the
brain, causes cell death, and affects the number of connections
between brain cells,» observes Kalin.
While some research supported a link
between prenatal sound exposure and improved
brain function, scientists had not identified any
structures responsible for this link in the developing
brain.
Researchers at Blue
Brain Project report groups of neurons bound into such cavities provide the missing link
between neural
structure and function, in their new study published in Frontiers in Computational Neuroscience.
Using functional magnetic resonance imaging — a technique that monitors
brain activity in real time — the Johns Hopkins group found reversing a decision requires ultrafast communication
between two specific zones within the prefrontal cortex and another nearby
structure called the frontal eye field, an area involved in controlling eye movements and visual awareness.
Between the
brain's neurons and glial cells is a critical but understudied
structure that's been called neuroscience's final frontier: the extracellular space.
Researchers from the University's Psychological Sciences department identified 38 healthy individuals aged
between 18 and 63 and tested their propensity to hallucinate, musical aptitude and measured their detailed
brain structure using an MRI scanner.
The new study, led by Catherine Lebel of the University of Calgary in Alberta, is the first to report associations
between maternal depression and abnormal
brain structure in kids at this age.
In a new study, Duke University researchers combined
brain imaging with a celebrity naming game to pinpoint the
structure in the
brain responsible for forming direct links
between environmental stimuli and enhanced focus.
«It alerts physicians to the relationship
between genes,
brain structure, and behavior,» a relationship that may one day become useful to clinicians.
Scientists have long sought a connection
between intelligence and some
structure in the
brain.
They analyzed the relationship
between these nutrient patterns and subjects»
brain structure and performance on cognitive tests.
In a study reported in the journal Nutritional Neuroscience, the researchers looked for relationships
between several omega - 3 fatty acids in the blood, the relative size of
structures in the frontal and parietal cortices of the
brain, and performance on tests of fluid intelligence in healthy elderly adults.
In the mid-1900s, neuroscientists proposed that learning causes a physical rearrangement of the
brain's
structure: New synapses form
between some neurons, while existing ones grow stronger or die out.
The conflict
between science and religion may have its origins in the
structure of our
brains, researchers at Case Western Reserve University and Babson College have found.
In addition, a subsample of 42 children (29 boys, 13 girls) had
brain imaging, which allowed the authors to examine the relations
between the cortical
structure (thickness and surface area) of their
brains and academic performance.
It may be that subjective perceptions of facial emotion are formed through repeated cycles of processing
between the amygdala, the temporal cortex and other
brain structures that shape a person's values and social perspectives.»
For example, the researchers were able to identify previously unknown gene expression differences
between the neural stem cells that give rise to the
brain's deep
structures versus its neocortical surface, and to show that molecular signatures of different neural cell types arise much earlier in
brain development than previously realized.
Neuroscientist Jason Cooperrider and colleagues scanned Grandin's
brain using three different methods: high - resolution magnetic resonance imaging (MRI), which captures the
structure of the
brain; diffusion tensor imaging (DTI), a method to trace the connections
between brain regions; and functional MRI, which indicates
brain activity.
The findings, which appear online in the Annals of Clinical and Translational Neurology, are the first to show a relationship
between fitness and
brain structure in older adults, but not younger adults.
To examine the relationship
between fMRI scans, patterns of neuronal activity and anatomical
structure of the
brain, the researchers examined the region of the parietal lobe of squirrel monkeys devoted to monitoring touch sensations.
Extended imaging sessions at UCLA allowed the statisticians to model links
between structures in epileptic patients»
brains and to compare them either individually or collectively with each other and with the controls.
According to the researchers these results provide evidence of a positive association
between fitness and
brain structure in older adults.
When humans are torn
between paying attention to two different things, it triggers a «conflict» circuit in a
brain region called the dorsal anterior cingulate cortex (dACC) which is part of a larger
brain structure controlling rational thought and emotions.
It may, for example, partly account for the differences in
brain structure and behavior
between identical twins, and could even affect thought processes by subtly influencing the changes in nerve cell connections that occur with experience.
«We wanted to find the link
between the abnormal
structure of synapses in the FXS mouse, and the behavioral abnormalities at the level of
brain circuits; that had not been previously established,» said senior author Dr. Carlos Portera - Cailliau, an associate professor in the departments of neurology and neurobiology.
Monkeys typically find other monkeys impossible to ignore, and this experiment was no exception: the monkeys often failed at the reward task because they looked at the faces, especially if the faces depicted emotion.When humans are torn
between paying attention to two different things, it triggers a «conflict» circuit in a
brain region called the dorsal anterior cingulate cortex (dACC) which is part of a larger
brain structure controlling rational thought and emotions.Using a tiny sensor implanted in the dACCs of the monkeys, Platt's group was able to measure the electrical activity of single neurons.
New studies released today reveal links
between social status and specific
brain structures and activity, particularly in the context of social stress.
Reported differences in the
structure of a specific
brain region (SDN - POA)
between heterosexual and homosexual men.
Kabadai concluded: «There is still so much we need to understand and learn about the relationship
between intelligence and
brain size, as well as the
structure of a bird's
brain, but this study clearly shows that bird
brains are not simply birdbrains after all!»
«The function of the
brain arises not just from interactions
between individual neurons but also from the combined activity of groups of neurons arranged in specific
structures,» neurosurgeon Isaac Chen of the University of Pennsylvania who not involved in the study, tells The Scientist by email.
Musen emphasizes that it is important to study both the structural and functional aspects of the
brain in cognitive decline, explaining that, «We look at the correlation
between the two because if a correlation exists, then it might suggest a common set of mechanisms underlying
brain structure and function raising the possibility that similar treatments may be useful for improving both.»
«In our study, we show that the world's most experienced users of this strategy differ from normal control subjects not in coarse differences in a single
brain structure, but in distributed connectivity patterns
between larger
brain networks,» he added.
The study also demonstrates an association
between NCAN variations with volumes of certain
brain regions in young adults and infants, suggesting that the gene is able to affect
brain structure and function.
The group of Jean - Louis Bessereau is investigating the molecular organization of chemical synapses, which are the specialized
structures supporting communication
between neurons in the
brain and
between neurons and muscles at neuromuscular junctions.
Ongoing studies in her lab attempt to characterize the relations
between sex and
brain structure and function; other studies focus on gender identity and sexuality.
The
brain stem is the final pathway
between cerebral
structures and the spinal cord.
That connection may benefit those who have lost vision because of damage in the
structures between the eye and the
brain — the loss of an eye through trauma, for instance, or damage to the optic nerve.