This study examined the relationship
between brain connectivity and the development of cognitive executive function.The researchers imaged a group of 882 subjects between the ages of 8 and 22.
Researchers then analyzed the connectivity of each participant's brain to determine a relationship
between brain connectivity and Self - Related Sharing Scale score across participants.
New research published August 17 in The Journal of Neuroscience suggests greater similarity
between brain connectivity at rest and on task may be associated with better mental performance.
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.
They used MRI scanning to look at the functional
brain connectivity patterns
between the two activities.
Colored regions in these MRI images of a human fetus (shown from two perspectives) indicate
brain regions where
connectivity grows stronger
between the 20th and 40th weeks of gestation.
While the effects of the technique are not well - understood, TMS may be able to restore normal
connectivity by stimulating neurons to make more connections with each other, thereby enhancing communication
between parts of the
brain.
For instance, knowing if there is a simple increase or decrease in
connectivity between brain regions compared to healthy individuals, or whether those with autism use entirely different
brain regions to implement cognitive flexibility will enable researchers to better design interventions to improve cognitive flexibility skills.
Interestingly, the researchers found that the degree of functional
connectivity,
between brain regions involved in detecting grammatical violations and those related to working memory, predicted the performance accuracy of the participants in determining whether a sequence was grammatical or not.
The recently published Allen Mouse
Brain Connectivity Atlas traces connectivity between 500,000 tiny cubes of brain tissue each containing up to 500 neu
Brain Connectivity Atlas traces connectivity between 500,000 tiny cubes of brain tissue each containing up to
Connectivity Atlas traces
connectivity between 500,000 tiny cubes of brain tissue each containing up to
connectivity between 500,000 tiny cubes of
brain tissue each containing up to 500 neu
brain tissue each containing up to 500 neurons.
For instance, what if a patient has visual hallucinations because poor
connectivity between the prefrontal cortex and the portion of the
brain that governs sight causes the hallucinations to override what the eyes actually see?
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.
The in vitro model was used to extensively characterize the differences
between neurons from different regions of the
brain and to mimic the system's
connectivity.
About half the participants had heightened
brain activity in the two regions and high
connectivity between the two regions.
The
connectivity was measured in 15 patients with visual hallucinations, 40 patients without visual hallucinations, and 15 healthy controls by calculating the level of synchronization
between activation patterns of different
brain areas.
For this study, researchers used resting - state fMRI to examine the
connectivity, or communication,
between brain areas.
This loss of
connectivity means that information can not flow as it should
between distant areas of the
brain, which may help explain impairment in social responsiveness, Jann said.
Going forward, the team will continue to study the relationship
between network
connectivity and metabolism in individuals with ASD, extending their work to other relevant
brain networks.
Decreased
connectivity between regions of the
brain that process a social situation could lead to the impaired judgment that escalates to an explosive outburst of anger.
Through a «mapping» performed with magnetic resonance, they identified the affected part and the type and size of the lesion, and analyzed the
connectivity between the different areas of the
brain.
«People with anger disorder have decreased
connectivity between regions of the
brain: Less integrity and density in the «information superhighway» of the
brain can lead to impaired social cognition.»
The researchers were attempting to look at the
brain's so - called «functional
connectivity,» that is, interactions
between brain regions during the course of a particular task, or at rest, Laird said.
In their recent PNAS paper members of the Imperial College team reported that the presence of LSD was linked to a boost in blood flow and functional
connectivity between the
brain's primary visual cortex and seemingly unrelated
brain networks that mediate other sensory inputs as well as higher - level processes including emotion.
The researchers divided each
brain scan into small regions and analysed the neuronal
connectivity between them, without making any assumptions about the ideal size of these regions for diagnosis.
In the first study to examine the intrinsic functional
connectivity of the
brain in relation to social media use, Dar Meshi and colleagues observed
connectivity between regions of the
brain previously established to play a role in self - cognition, in 35 participants.
In new research published, scientists at the Hebrew University of Jerusalem and in Germany and the USA show that the way in which the
brain organizes its visual sense remains intact even in people who are blind from birth, and that at least the pattern of functional
connectivity between the visual area and the topographical representation of space (up / down, left / right, etc.) can develop on its own without any actual visual experience.
Brain maps of people with autism spectrum disorders (ASD) show different levels of connectivity between parts of the brain compared with typical individ
Brain maps of people with autism spectrum disorders (ASD) show different levels of
connectivity between parts of the
brain compared with typical individ
brain compared with typical individuals.
In a new study of how anesthetic drugs affect the
brain, researchers suggest that our experience of reality is the product of a delicate balance of
connectivity between neurons — too much or too little and consciousness slips away.
The results suggest that, in the
brain, there is an optimal level of
connectivity between neurons that creates the maximum number of possible pathways.
The images showed features such as the size of each
brain region, the level of
connectivity between neurons, and how much white matter was insulating the neurons.
Establishing the strength of the
connectivity between these large - scale
brain networks will be important in predicting people's ability to quit and stay quit, the authors write.
«This lack of synchronization with frontal regions in ASD — an impairment in
brain connectivity — may lead to symptoms of the disorder that involve processes that require
brain coordination
between frontal and other areas, such as language processing and social interaction,» Just explained.
The researchers also found that listening to favorite songs altered the
connectivity between auditory
brain areas and a region responsible for memory and social emotion consolidation.
Rather than activity in isolated
brain regions, we looked at functional
connectivity, or coordinated fluctuations
between pairs of
brain regions over time,» explained Finn.
However, the association
between BOLD variability and structural
brain connectivity is not well understood.
In psychiatric disorders, functional
connectivity, which is measured by temporal correlations
between some
brain regions, is too much increased or decreased compared to healthy control.
It is important to note that the observed association
between λ and IQ could not be related to possible variation in overall
connectivity, as the IQ scores showed no correlation with the total number of connections k of the
brain network (supplemental Fig. 3g — i, available at www.jneurosci.org as supplemental material) or the distribution of k. No significant correlation was found
between the clustering coefficient γ and IQ (Fig. 2c, d).
This technique uses fMRI
brain scanning to monitor the functional
connectivity between two
brain regions, while participants performed a simple motor - imagery task.
Most prominent effects
between IQ and the level of global
connectivity efficiency (as expressed by a shorter node specific normalized path length) were found in the medial prefrontal cortex (yellow box), bilateral inferior parietal cortex (red box depicts effect in right hemisphere), and precuneus / posterior cingulate regions (orange box) of the functional
brain network.
«Nonetheless, we think that we can use optogenetics to put together a larger picture of
connectivity between other types of neurons in other areas of the
brain.»
«These findings show a relationship
between the hypothesis that schizophrenia is a neurodevelopmental disorder and the longstanding hypothesis — first articulated by the German anatomist Karl Wernicke in the late 19th century — that it is a disease of altered
connectivity between regions of the
brain,» added Alexander - Bloch.
When the goal was to increase functional
connectivity, a monetary reward was given on trials with high temporal correlation
between the two relevant
brain activities was detected.
Our data reflects the level of efficient organization of the functional
brain network during a resting state and not the efficiency of functional
connectivity between brain regions during the performance of specific cognitive tasks that enter into the IQ score.
The researchers found a link
between abnormalities in white matter and a decrease in functional
connectivity in the
brain's default - mode network, a set of regions that typically shows abnormal behavior in people at genetic risk for Alzheimer's disease.
Neuroimaging of the spinal cord will be used to assess how the combination therapy can strengthen
connectivity of the pathway
between the
brain and injured spinal cord and how the improved
connectivity explains gains in walking and balance function.
«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.
Neuroimaging methods provide a powerful tool to investigate
brain connectivity, and have been widely applied to study the mutual relationship
between structural and functional connections
between brain regions in healthy subjects and in patients.
This indicates differential hemispheric predilection of
brain connectivity abnormalities
between SD and bvFTD.
The underpinnings of the abnormal relationship
between structural and functional
connectivity in this and other
brain disorders are unknown, and their investigation may provide insight into the underlying pathophysiological mechanisms, and possibly into compensatory mechanisms that may promote recovery of functional
connectivity in case of congenital or acquired white matter loss.
Task - based functional
connectivity measures the synchronization of activation levels
between brain regions during the performance of a given cognitive task.