Tag: "connectivity" at biology news
Human knowledge is based upon directed connectivity between brain areas
...number of brain interactions, a stronger degree of connectivity
occurs, whenever a perceived object is familiar, that is whenever specific knowledge is available and can be used for processing. The contribution of our study is that by using a new method of signal analysis we succeeded in measuring the directional...
Strength of connections between brain regions may affect an adolescent's response to peer influence
...formation about social cues from movement, but the connectivity
between these regions was stronger in children who were marked as less vulnerable to peer influence. These children were also found to have more activity in the prefrontal cortex, an area important for decision making and inhibition of socially inapp...
Prenatal alcohol exposure alters brain activity in the frontal-striatal areas
...omplete the task. Another possibility is that the connectivity
- [meaning] how different brain regions cooperate and communicate together - between frontal-striatal regions is altered in brains with prenatal alcohol exposure." Fryer thinks that these findings may have implications for the brains of chronic ad...
Modeling the restless brain
...porns and Honey suggests that this very pattern of connectivity
is crucial to generating and shaping brain activity in the resting and active brain. Empirical work on the human brain is challenging due to the fact that the brain's intricacies cannot simply be manipulated and observed. Sporns and Honey compare ...
Lab-on-a-chip device from Berkeley Lab to speed proteomics research
...mical process inside a cell, and forms much of the connectivity
that enable cells to come together into tissues and organs. One of the first steps in proteomics research is to determine the identity and modifications of individual proteins that make up a cell or tissue sample. The principal means of doing this is...
Food cue-related brain activity linked to obesity?
... cues triggered dramatic changes in the functional connectivity
of circuits involved in adaptive behaviour. For example, increased connectivity
was seen between the cortex and two other regions - the amygdala and the striatum. Within the latter...
Brain networks strengthened by closing ion channels
...ns like guanfacine. "Guanfacine can strengthen the connectivity
of these networks by keeping these channels closed, thus improving working memory and reducing distractibility," she said. "This is the first time we have observed the mechanism of action of a psychotropic medication in such depth, at the level of io...
Common gene version optimizes thinking -- but with a possible downside
...Daniel Weinberger, M.D. "Normally, enhanced cortex connectivity
with the striatum would provide increased flexibil...sted circuit activation, structural and functional connectivity
and performance on thinking tasks, likely by increasing gene expression. In 257 affected families, p...
The floral network -- what determines who pollinates whom
...ws, the number of interactions does too, while the connectivity
(the fraction of possible interactions that actually occur) and the nestedness (the relative importance of generalist species as mutualistic partners of specialist species) shrinks. Study of such networks of species is still in its youth, and the rul...
New neurons could act to alleviate epilepsy
...cal running environment, showed reduced excitatory connectivity
to other neurons, as well as increased inhibitory ... They wrote that "following insult, the functional connectivity
of new neurons seems to develop in order to mitigate the dysfunction in the epileptic brain. These d...
Carnegie Mellon uses new imaging technique to discover differences in brains of people with autism
...synchronization. In people with autism, anatomical connectivity
-- based on the size of the white matter -- was fo...brain regions. They also found that the functional connectivity
was lower in those participants in whom the autism was more severe. These studies, along with the ...
How Rett Syndrome mutation targets the brain
... regulation of MeCP2 in the maturation of neuronal connectivity
and provide a new framework for understanding how mutations in MeCP2 lead to the deregulation of these processes in RTT."...
MBL scientists to present results of long-term ecological research at NSF meeting
...tist Poster 151 - Meteorological forcing and the connectivity
between the hypolimnion and euphotic zone in Arctic lakes - http://www.lternet.edu/asm/2006/posters/poster.php?poster_id=404 MBL Author(s): Anne Giblin, Senior Scientist Session 4 = Saturday, September 23 7:00 = 11:00 PM(Note: Odd numbered poster...
Slow brain waves play key role in coordinating complex activity
...egions talk to each other, and there is a level of connectivity
between cortical regions not apparent by any current means of detection. "By measuring high-gamma band activity, we will be able to see in real time, during surgery, how cortical regions are connected through subcortical systems, allowing us to unde...
Meet Europe's top neurobiologists in Leuven, Belgium
...& FMI, BaselGenetic specification of sensory-motor connectivity
in the developing spinal cord, 03/09/06, 12.00 12.30 Prof. Carlos Dotti, VIB K.U.LeuvenAxon-dendrite growth axis is specified at the mitotic stage, through the polarized membrane and cytoskeletal organization mastered by the centrosome, 03/09/06, ...
Life and death in the hippocampus: what young neurons need to survive
...nt is a competition between mature cells vying for connectivity
and young guys competing with both the mature cells and their peers to fit in. You are selecting for the cell that performs best in this environment." The Gage lab previously showed that the rate at which new neurons emerge from stem cells depends ...
Ultrasound affects embryonic mouse brain development
...ide sequence. The destination defines the neurons' connectivity
and function. It has been reported earlier by others that abnormal cortical function may result when this process is grossly altered by genetic or environmental factors such as alcohol and drugs. The study reported on August 7 is believed to be th...
Transmission rates of vCJD
...ference the extent to which the epidemic cuts off connectivity
among the susceptible population that remains following an epidemic. The evolution of the susceptible network over the course of an epidemic differs among classes of networks; frailty, relative to interference, accounts for an increasing component of...
Carnegie Mellon researchers discover key deficiencies in brains of people with autism
...ality in the cabling. The results suggest that the connectivity
among brain areas is among the central problems in... emphasis on collaborating. In autism, the network connectivity
(the bandwidth) through which the areas communicate with each other may be limited, particularly in ...
Cause of neuronal death in Down's syndrome, Alzheimer's disease could be surprisingly simple
...e. Neurotrophins regulate neuronal development and connectivity
by activating protein switches called Trk receptors in neurons. The two papers were led by William C. Mobley and Ahmad Salehi of Stanford University (Salehi et al.) and Susan G. Dorsey at the University of Maryland Baltimore School of Nursing and ...
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