By exposing rats to novel objects and measuring their brain signals, Duke University researchers have detected telltale signal reverberations in wide areas of the brain during sleep that reveal the process of consolidating memories. According to the researchers, their findings offer important evidence that extensive regions of the brain are involved in processing memories during a particular form of sleep, called slow-wave sleep.
The researchers said their findings lay to rest previous doubts that sleep enables consolidation of newly acquired memories, and also establishes roles for both slow-wave sleep and rapid eye movement (REM) sleep in memory consolidation. Slow-wave sleep is a deep dreamless sleep, and REM sleep is associated with dreaming.
The researchers published their findings on Jan. 19, 2004, in the online Public Library of Science (www.plos.org). Senior author on the paper was Miguel Nicolelis, Ph.D., a professor of neurobiology and of biomedical engineering, who is also co-director of the Duke Center for Neuroengineering. Lead author was Sidarta Ribeiro, Ph.D., in Nicoleliss laboratory. Other co authors were neurobiologists Damien Gervasoni, Ph.D., Ernesto Soares, Yi Zhou, Shih-Chieh Lin, M.D., and Janaina Pantoja; and Michael Lavine, Ph.D., of the Duke Institute of Statistics and Decision Sciences. Their work was supported by the National Institutes of Health and the Pew Latin American Program.
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Salmonellae are dangerous pathogens that enter the body via contaminated food and can cause severe infections. But these bacteria are also known to target...
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
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