Daily non-political popular news in brief.
Ecstasy can harm the brains of first-time users
11-27-2006 · EurekAlert!Researchers have discovered that even a small amount of MDMA, better known as ecstasy, can be harmful to the brain, according to the first study to look at the neurotoxic effects of low doses of the recreational drug in new ecstasy users. The findings were presented today at the annual meeting of the Radiological Society of North America.
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Keywords: ecstasy, harm, brains, first-time, users, brain, first, time, user
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- Technology could enable computers to 'read the minds' of users
10-01-2007 · EurekAlert!
Tufts researchers are developing techniques that could allow computers to respond to users' thoughts of frustration or boredom (too much or too little work) by applying functional near-infrared spectroscopy technology, which uses light to monitor brain blood flow as a proxy for user workload stress. Applying this noninvasive, portable imaging technology in new ways, the researchers hope to gain real-time insight into the brain's emotional cues.
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- Free will takes flight: how our brains respond to an approaching menace
08-23-2007 · EurekAlert!
Wellcome Trust scientists have identified for the first time how our brain's response changes the closer a threat gets. Using a "Pac Man"-like computer game where a volunteer is pursued by an artificial predator, the researchers showed that the fear response moves from the strategic areas of the brain towards more reactive responses as the artificial predator approaches.
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- Brain fends off distractions
03-25-2007 · EurekAlert!
Dutch researcher Harm Veling has demonstrated that our brains fend off distractions. If we are busy with something we suppress disrupting external influences. If we are tired, we can no longer do this.
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- Brain cell growth diminishes long before old age strikes, animal study shows
10-15-2007 · EurekAlert!
Soon after marmosets reach adulthood, the rate at which new neural cells form in the hippocampus region of the animals' brains begins to decline. The hippocampus is associated with both learning and memory. While similar observations have been made previously in the brains of rodents, this is the first time the decrease in new cell growth has been noted in a primate.
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- MIT researcher: Learning about brains from computers, and vice versa
02-15-2008 · EurekAlert!
For many years, Tomaso Poggio's lab at MIT ran two parallel lines of research. Some projects were aimed at understanding how the brain works, using complex computational models. Others were aimed at improving the abilities of computers to perform tasks that our brains do with ease. But recently Poggio has found that the two tasks have begun to overlap to such a degree, that it's now time to combine the two lines of research.
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- MRI analysis could prevent brain damage from stroke, Stanford study finds
11-01-2006 · EurekAlert!
Greg Albers, M.D., director of the Stanford Stroke Center, and his team report in the November issue of Annals of Neurology that new magnetic resonance imaging techniques can discriminate between stroke patients who are likely to benefit from a stroke medication -- even when administered beyond the currently approved three-hour time window -- and those for whom treatment is unlikely to be beneficial and may cause harm.
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- Smoking produces changes in human brain like those in animals using illicit drugs
02-20-2007 · EurekAlert!
New research shows for the first time that smoking produces long-lasting biochemical changes in the human brain similar to those changes previously seen in the brains of animals that used cocaine, heroin, and other illicit drugs.
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- Pavlov's cockroach: Classical conditioning of salivation in an insect
06-12-2007 · EurekAlert!
A new study, led by Makoto Mizunami and colleagues at Tohoku University in Japan, demonstrates classical conditioning of salivation in cockroaches, for the first time in species other than dogs and humans, and its underlying neural mechanisms remain elusive because of the complexity of the mammalian brain.
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- Feeling sleepy is all in your genes
10-17-2007 · EurekAlert!
Genes responsible for our 24-hour body clock influence not only the timing of sleep, but also appear to be central to the actual restorative process of sleep, according to research published in the online open access journal BMC Neuroscience. The study identified changes in the brain that lead to the increased desire and need for sleep during time spent awake.
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- Scientists uncover how the brain controls what the eyes see
11-20-2007 · EurekAlert!
Vase or face? When presented with the well-known optical illusion in which we see either a vase or the faces of two people, what we observe depends on the patterns of neural activity going on in our brains.
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