The HCP seeks to map
brain connectivity at a macroscopic scale, using magnetic resonance imaging (MRI).
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
They used MRI scanning to look
at the functional
brain connectivity patterns between the two activities.
Relieving an Overwired
Brain Reid and his colleagues didn't know it
at the time, but in St. Louis another team was also studying the
connectivity of depression.
«That they can detect this difference in
connectivity so early is something interesting,» says Hao Huang, who studies neonatal
brain development
at the University of Pennsylvania.
«Virtually all major clinical
brain disorders are associated with disturbances of
brain connectivity,» says Olaf Sporns
at Indiana University in Bloomington.
The results of the study suggest that «people's performance on various cognitive tasks is better the fewer changes they have to their
brain connectivity,» said John Dylan Haynes, a neuroscientist
at the Bernstein Center for Computational Neuroscience in Berlin who studies cognition and was not involved in the study.
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.
The new research shows that, in autism,
connectivity in these networks that can be seen on fMRI scans is fairly similar regardless of whether the
brain is
at rest or performing a task.
To begin to understand how the
connectivity patterns in the
brains of memory athletes influence memory performance, Dresler and colleagues looked
at the 25 connections that most differentiate memory athletes from others.
The latest work paints a picture of LSD and some other hallucinogens as drugs that can decrease modularity and
connectivity within
brain networks while enhancing the
brain's overall
connectivity, explains Frederick Barrett, a cognitive neuroscientist
at Johns Hopkins University who has studied hallucinogenic drug effects but was not involved in the research released this week.
Scientists used a type of magnetic resonance imaging (MRI), known as diffusion weighted imaging, to measure the
brain connectivity in 260 infants
at the ages of 6 and 12 months, who had either high or low risks of autism.
At the cellular level, although they share canonical types of inhibitory interneurons (INs) and excitatory principal neurons (PNs), it remains largely unknown to what extent a single type in different
brain regions displays similarity in gene expression, axonal shape,
connectivity, and developmental origins.
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.
«Though the «blind
brain» wiring may change greatly in the blind in its frontal language related parts, it still retains the most fundamental topographical and functional connectivity organizational principles of the visual cortex, known as «retinotopic mapping» — the processing of two - dimensional visual images through the eye,» said co-lead researcher Amir Amedi, associate professor of medical neurobiology at the Hebrew University's Edmond and Lily Safra Center for Brain Sciences and IMRIC, the Institute for Medical Research Israel - Ca
brain» wiring may change greatly in the blind in its frontal language related parts, it still retains the most fundamental topographical and functional
connectivity organizational principles of the visual cortex, known as «retinotopic mapping» — the processing of two - dimensional visual images through the eye,» said co-lead researcher Amir Amedi, associate professor of medical neurobiology
at the Hebrew University's Edmond and Lily Safra Center for
Brain Sciences and IMRIC, the Institute for Medical Research Israel - Ca
Brain Sciences and IMRIC, the Institute for Medical Research Israel - Canada.
A group of researchers
at the Beckman Institute for Advanced Science and Technology
at Illinois, led by psychology professor Aron Barbey and postdoctoral researcher Tanveer Talukdar, investigated whether individual differences in
brain connectivity were associated with decision - making, using functional MRI and a comprehensive test of decision - making.
«Most previous studies have focused on using one technique
at a time, even though we have evidence that there are alterations in the
brain in autism in terms of structure, white - matter
connectivity, and
brain chemical concentrations.
«But, by looking
at the
brain's own network
connectivity, we can identify sites on the surface of the
brain that connect with this deep site, and stimulate those sites noninvasively.»
Rather than activity in isolated
brain regions, we looked
at functional
connectivity, or coordinated fluctuations between pairs of
brain regions over time,» explained Finn.
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).
In a study of structural
brain connectivity led by the University of Illinois
at Chicago and UCLA, those participants with anorexia nervosa who scored lowest on a test measuring their ability to form insight had more connective abnormalities than other patients in
brain regions linked to error detection and conflict monitoring as well as self - reflection.
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.
It has been a longstanding hypothesis that alterations in the microcircuit of the prefrontal cortex and / or in its
connectivity with the rest of the
brain may be
at the core of many of these disorders.
Kessler Foundation is in the forefront of research looking
at connectivity not only in the
brain but also in the spinal cord.
«Using strength testing and specialized EEG and neuroimaging techniques, we will look
at the effects on handgrip strength and the level of functional
brain - to -
brain and
brain - to - muscle
connectivity that modulates maximal muscle force.
They have observed loss of
connectivity of these critical neurons in glaucoma, both
at the level of inputs with the retina and their outputs to the
brain.
Decreased functional
connectivity (FC) within temporal cortex was... identified for MCIs
at baseline, which was partially determined by the GRS; moreover, compensations may occur within the frontal - parietal
brain to maintain relatively intact cognition.
An important area for future work will be to understand functional
connectivity abnormalities in ASD
at the global level, across the whole
brain, as well as in specific functional networks or sets of nodes.
«Atypical development of local and distant intrinsic functional
connectivity in ASD,» in Paper Presented
at the Organization for Human
Brain Mapping, (Beijing).
«Functional
connectivity in the
brain is one of the most interesting topics in current neuroscience,» said Hiroshi Imamizu of the Advanced Telecommunications Research Institute International
at the University of Tokyo and a co-author of the paper.
â $ œOur findings fit into an emerging theme in neuroscience research: that during childhood, there is a switch in amygdala function and
connectivity with other
brain regions, particularly the prefrontal cortex, â $ says Mar Sanchez, PhD, neuroscience researcher
at Yerkes and associate professor of psychiatry and behavioral sciences
at Emory University School of Medicine.
Her research project
at the GRID Lab, which is affiliated with the Center for Sensorimotor Neural Engineering (CSNE), investigated how learning to use a BCI affects
connectivity in the
brain beyond the BCI implantation site.
In 2012, our laboratory initiated a study of AAN structural
connectivity in ex vivo human
brain specimens and in a living human subject - a study made possible by high resolution MRI scanners and high angular resolution diffusion imaging (HARDI) sequences developed
at the Massachusetts General Hospital Athinoula A. Martinos Center for Biomedical Imaging.
Fire it up and any skills and smart home
connectivity you've added to other Echo devices will be
at the ready, as well as music, audiobooks, and of course, Alexa's bountiful
brain.
Nevertheless, we expected the relationship between maternal depressive symptoms and frontal
connectivity to be more apparent
at later stages of infant development, since the functional integration of
brain regions may develop later than that of individual
brain structures.