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Episodic in Biological News

Overuse of narcotics and barbiturates may make migraine worse

... or chronic migraine (TM) in people with episodic migraine (EM). In the study, 8,219 people with episodic migraine were followed for one year; 2.5% ... increased risk of new onset of TM. That means episodic or occasional migraine sufferers who took ...

Total, genetically-based recall

... in fact determine significant sex differences in episodic memory, a type of long-term memory based on ... results indicated that women excelled in verbal episodic memory tasks, such as remembering words, objects, ... of familiar odors, and that the female episodic memory advantage increases when women utilize ...

October Geology and GSA Today media highlights

... erosion in northern Guatemala; a new catalog of episodic tremor and slip for the Cascadia subduction zone; ... unknown mineral deposits. Segmentation in episodic tremor and slip all along Cascadia Michael R. ... USA. Pages 907-910. The recent discovery of episodic tremor and slip (ETS) in subduction zones is ...

Caltech scientists reveal how neuronal activity is timed in brain's memory-making circuits

... has long been known to be critical for the formation and maintenance of episodic memoriesi.e., memories of experiences. In the rat, hippocampal neurons ... hippocampus plays a role in providing spatial cues that are important to episodic memory," Lubenov speculates. "We don't know yet." What we do know is ...

September Geology and GSA Today media highlights

... continuous fumarolic activity. Associated with this activity is a slow, episodic meter-scale uplift and deflation of the ground surface that is referred to ... 140,000 and 110,000 years ago. The climate during this time consisted of episodic wet events that enabled the deserts of the northeastern Sahara, Sinai, and ...

Early initiation of Arctic sea-ice formation

... seasonal changes can be discerned in the sediment cores. The researchers conclude from their analysis, which cover a two-million year period, that episodic sea ice formation in marginal shelf areas of the Arctic started around 47.5 million years ago, about a million years earlier than previous estimates ...

Results from trials of DHA in Alzheimer's disease and age-related cognitive decline

... age=70) with mild memory complaint. The primary outcome measure was a change from baseline in CANTAB Paired Associate Learning (PAL), a visuospatial episodic memory test. After six months, the researchers found that the study participants taking DHA supplements made significantly fewer errors on the PAL ...

UT San Antonio researcher wins $917,000 from NIH to study memory

... humans serve as a temporal marker for highly similar memories. Because time also plays a role in memories, the contribution of these new neurons to episodic memory is the focus of this four-year grant." Although memory loss is most commonly associated with aging, it is also symptomatic of more ...

April 2009 Geology and GSA Today media highlights

... South China, in contrast to the conventional view that the global oceans were oxygenated. Zhang et al. argue that anoxia may have contributed to the episodic and stepwise extinction in the Hirnantian Stage, in conjunction with harsh climate and temperature changes related to glaciation. ...

Review of probiotic trial research finds only Bifantis able to claim efficacy for IBS symptoms

... to fully meet these guidelines, making it a good option for those who want to build and maintain a natural defense against abdominal discomfort and episodic digestive upsets such as constipation, diarrhea, urgency, gas and bloating. ...

'Junk' DNA proves functional

... do the distributed DNA segments which bind the regulatory proteins." Dr. White also added, "This hypothesis for formation of new species through episodic distributions of families of gene regulatory DNA sequences is a powerful one that will now guide a wealth of experiments to determine the functional ...

October 2008 GEOLOGY and GSA TODAY media highlights

... through the presence of grounding-zone wedges overprinting mega-scale glacial lineations on many polar shelves, that ice-stream retreat is more often episodic than catastrophic. These observations provide a robust test of the ability of numerical models to predict the varied response of ice-sheet basins to ...

Marine debris will likely worsen in the 21st century

... interagency coordination to address the marine debris problem, leadership and governance remain inefficient and current mitigation efforts are episodic and crisis driven, the committee found. A national framework to identify priorities for dealing with marine debris and its removal efforts should be ...

Concentrating on different aspects of pain leads to breakthrough in migraine genetics

... Migraine is the most common cause of episodic headache, and by far the most common neurological cause of a doctors visit. It affects some 15% of the population, including some 41 million people ...

Are animals stuck in time?

... successfully by the rats. These results, the researchers say, suggest that episodic-like memory in rats is qualitatively different from human episodic memory, which involves retention of the point in past time when an event occurred. The rats remember whether they did something, such as hoarded ...

Slow slip and slide dynamics

... by humans. This is a prime location for the use of GPS to study plate boundary processes like earthquakes, tsunamis, locking zone dynamics and episodic tremors because the peninsula is so close to the subduction zone trench, said Psencik. Using our state of the art network of GPS and seismic systems ...

Scientist postulates 4 aspects of 'humaniqueness' differentiating human and animal cognition

... Recently, scientists have found that some animals think in ways that were once considered unique to humans: For example, some animals have episodic memory, or non-linguistic mathematical ability, or the capacity to navigate using landmarks. However, despite these apparent similarities, a ...

Novel mechanism for long-term learning identified by Carnegie Mellon researchers

... with additional training, or experience. She notes that this brain area may use very different molecular mechanisms than other forms of short-term, episodic memory like those that may occur in the hippocampus. In a series of experiments the researchers blocked different receptors, including NMDA, to ...

Safe and effective therapy discovered for patients with protein-losing enteropathy

... identified commonalities in clinical observations of PLE patients that recognized several key features of PLE pathogenesis; in particular, it is episodic and its onset is often associated with viral infection and a proinflammatory state. The most intriguing commonality that the group observed in PLE ...

December GEOLOGY and GSA TODAY media highlights

... before the presumed bolide impact. The temporal sequence of these two events suggests that the biotic crisis was a consequence of prolonged and episodic changes in the marine and continental systems, and argues against an extraterrestrial impact as the main cause. Orbital rhythms, monsoons, ...

Mars Express -- 5000 orbits and counting

... was fairly abundant. However, the presence of sulphates and iron oxides suggests that the planet subsequently became colder and drier, with only episodic eruptions of water onto the surface. At the poles, OMEGA has measured the surface composition and produced unprecedented maps of water ice and ...

Study shows interruption of antiretroviral therapy increases risk of disease and death

... with use of antiretroviral therapy in an episodic (interrupted) manner. The study found that the use of episodic antiretroviral therapy was inferior to continuous therapy as episodic therapy significantly increased the risk of ...

International HIV/AIDS trial finds continuous antiretroviral therapy superior to episodic therapy

... comparing continuous antiretroviral therapy with episodic drug treatment guided by levels of CD4+ cells has ... was stopped because those patients receiving episodic therapy had twice the risk of disease progression ... revealed that participants on CD4+ cell-guided episodic treatment faced more than twice the risk of ...

Attacks of King George III's madness linked to key metabolism molecule

... researchers say they have uncovered a molecular explanation for the episodic attacks of irrational and demented behavior in porphyria, the disease ... is lead author. "We've explained how porphyria symptoms can occur in episodic attacks triggered by fasting, and why they can be treated by feeding ...

How the brain weaves a memory

... Memories of events comprise many components--including sights, sounds, smells, and tastes. Somehow the many features of an episodic memory are woven together into a coherent whole, and researchers have had little understanding of how this binding takes place as the memories are ...

Primates take weather into account when searching for fruits

... for the behavioral trend they observed. These findings are consistent with the idea that monkeys make foraging decisions on the basis of episodic (or "event-based") memories of whether or not a tree previously carried fruit, combined with knowledge of recent and present weather conditions and a ...

History of human cannibalism eats away at researchers

... that there was, in fact, a deficit of intermediate frequency variants," says Bertranpetit. "Our results are consistent with a complex history of episodic or fluctuating selection, including positive selection, purifying selection, and possibly even short periods of balancing selection." On a more ...

Study ties 'new' cell-death mechanism to developmental and degenerative brain disorders

... biochemical mechanism that regulates the electrical impulses of bursting neurons. Although potassium channel mutations have previously been linked to episodic disorders such as seizures, this is the first time they have been identified as causative factors ?and potentially therapeutic targets ?in ...

'Punctuated' evolution in the human genome

... status or chromatin conformation. "Other regions may show different temporal biases," explains Eichler. "The important implication here is that episodic bursts of activity challenge the concept of gradual clock-like changes during the course of genome evolution. Since duplications are important in the ...

Disabling gene defuses rheumatoid arthritis in mice

... Americans or about 1 percent of the population. Women are two to three times more likely to develop the disorder than men. Symptoms often occur in episodic bursts and may include morning stiffness, fatigue and joint and muscle pain. In severe cases, rheumatoid arthritis can damage cartilage, tendons, ...

New Clues Add 40,000 Years to Age of Human Species

... ?layers of organic-rich sediments thousands of kilometers north in the Mediterranean that other researchers had already associated with specific, episodic climate changes. In addition, the sediments show that each major layer deposited very rapidly, perhaps within a few thousand years or less. In ...
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