Tag: "cortex" at biology news
Brain circuit may permit scientists to eavesdrop on memory formation
...ion, there is a clear need for the hippocampus and cortex
to talk to one another." One candidate for the com...part of the dialog between the hippocampus and the cortex
that occurs after learning," said Schuman. "Now, what is needed is an exploration of the specific fi...
Where in the brain decisions are made
...aying approach to demonstrate that a region of the cortex
called the lateral intraparietal (LIP) area is active when monkeys are making subjective internal decisions about the desirability of an action--in this case, moving their eyes to a target. According to the researchers, their findings represents a st...
Coke versus Pepsi: It's all in the head
...ne recalling cultural influence--in the prefrontal cortex
interact to determine preferences....
A new culprit in depression?
... thinking and emotion: the dorsolateral prefrontal cortex
and the anterior cingulate cortex. Both are locate...ope to look at the different layers of the brain's cortex
to see if there are any differences by layer. And, they hope to look at the genes that encode FGFs a...
Perceptual decision-making hub pinpointed in human brain
...searchers looked for a site in the brain's frontal cortex
showing the telltale reduced activity during hard ... a decision." The dorsal lateral prefrontal cortex
site is also activated by other tasks, suggesting that it likely has general decision-making functio...
Gene for Joubert syndrom with excessive brain folds discovered by UCSD researchers and Harvard team
...als with the form that includes excessive cerebral cortex
brain folding. Beyond that, we are very interested in studying this new gene in a whole host of childhood brain disorders" In addition to Gleeson, authors of the paper were first author Tracy Dixon-Salazar, B.S., Jennifer L. Silhavy, M.S....
Study is looking at ways to help stroke survivors regain lost motor skills
...at the use of electrical stimulation, called motor cortex
stimulation, may be both safe and effective, accor...rwent physical rehabilitation accompanied by motor cortex
stimulation showed greater improvement than participants who received physical rehabilitation alone....
Brain differences in adolescents, psychopaths, lend to their impulsive, risk-taking behavior
...ed significant activation in the medial prefrontal cortex
and in the brainstem, near the ventral tegmentum a...the left lenticular nucleus, and the left parietal cortex
than psychopaths. Psychopaths showed more activation than nonpsychopaths in the left anterior cingul...
Deciphering an autism mystery
... San Diego, saw changes in specific regions of the cortex
that provide clues to the neural makeup of autisti...c behaviors. Cells of the cerebral cortex
are arranged into functional units called mini-columns. Each of these tiny vertical structures is ma...
Yerkes researchers to present array of new data at Society for Neuroscience Meeting
...sychostimulant drugs and feeding behaviors, in the cortex
in order to further understand the functional role of CART in the brain. (7 p.m. 8 p.m.) Dr. Zola: adapted behavioral memory tasks developed for use with nonhuman primates and combined them with noninvasive, infrared, eye-tracking technology to de...
Stress impairs thinking via mania-linked enzyme
...he researchers selectively targeted the prefrontal cortex
in rats and monkeys performing working memory task...um and carbamazepine protected monkeys' prefrontal cortex
functioning from impairment by a norepinephrnine-like drug. The researchers traced impairment to a ...
A global view of gene expression in the aging kidney
...y, 985 showed age-related changes. Although cortex
and medulla have different cell types and perform different functions, their genetic aging profile was very similar, suggesting a common aging mechanism operates in both structures. In fact, these mechanisms may function broadly, as most of the age-r...
Brain surface stimulation alleviates Parkinson's symptoms
...e, high-frequency stimulation of the brain's motor cortex
via electrodes implanted on its surface can allevi...chers implanted electrodes epidurally on the motor cortex
in the animals and studied the effects of stimulation on movement initiation (akinesia) and slowed m...
Chimpanzee brains are asymmetrical in key areas and their handedness reflects it
...erence and asymmetries in three areas of the brain cortex
in chimps. Observing 66 chimps, they correlated asymmetries in brain anatomy with three measures of handedness: Simple reaching (which hand chimps used to pick up a raisin thrown into the cage), two-handed feeding (which hand chimps used to feed th...
Fewer calories may slow Alzheimer's
...,plaques accumulate in the hippocampus and frontal cortex
ofAlzheimer's sufferers - areas responsible for memory. In the diet-restricted mice, both the amount and size of plaque wasabout 50 percent less than in mice that ate as much as they wanted. "The power of this study is that two different ...
Deciphering the genetic babel of brain cells
...ticospinal motor neurons (CSMN), which connect the cortex
and spinal cord and carry the signals that operate... animal had defects in the connections between the cortex
and spinal cord that showed that the gene was critical for CSMN development. "The data here support ...
Improved recipe for magnetic brain stimulation
... consistent, and controllable changes in the motor cortex
of humans that last more than an hour. Their findi...nteer subjects. They aimed the pulses at the motor cortex
that controls muscle response, because effects on the motor cortex
can be objectively measured by re...
Loss of sight and enhanced hearing: A neural picture
...new study, the authors hypothesized that if visual cortex
recruitment bolstered auditory function in some individuals, then visual cortex
activity would correlate with individual differences in performance, and the degree of activity shou...
Foot-eye coordination: Visual signals trigger rapid step adjustments without falls
...pathways operating below the level of the cerebral cortex
and conscious perception in the brain. The process ensures rapid target interception and may have evolved through its advantage for catching prey. In the new work, Brian Day and Raymond Reynolds of University College London show that the foot is unde...
Choosing where to look and changing your mind
...ound that distinct areas within the medial frontal cortex
were involved in these functions. One part of medial frontal cortex
was active when people freely made a choice, whereas a different part responded to situations of con...
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