Articles with the keyword: 
sea-maid submitted, created time 3 months 3 weeks (sciencenow.sciencemag.org)
A new study has found that older rats seem to replay previous events less and, as a result, have more trouble remembering than younger animals.
Could those memory problems be due to a decline in the brain's replay during sleep? How can these results be extrapolated to humans? 
Sex and Drugs and Singing Mice
Vincent submitted, created time 7 months 2 weeks (sciencenow.sciencemag.org)
Mice can whistle and chirp like birds--and researchers now say their songs seem to be happy ones. New experiments associate the rodents' ultrasonic chatter with the brain's dopamine-based reward system, and investigators hope that studying the songs may eventually point toward genes behind human emotional disorders such as schizophrenia and autism.
Spontaneous brain activity causes 'unforced errors'
jiangyun submitted, created time 1 year 1 month (www.newscientist.com)
The reason why even professional basketball and soccer players sometimes miss an easy shot may be partly explained by spontaneous fluctuations of electrical activity within the brain, a study suggests.
August submitted, created time 1 year 2 months (sciencenow.sciencemag.org)
There's no news like bad news. The tabloids are full of accidents, gory murders, and mayhem, and people eat it up. But there may be a silver lining, at least for seniors. A new study finds that the human brain reacts less strongly to emotionally negative stimuli as we age, in effect making us more responsive to all things positive and less responsive to the dark and dismal. This bolsters a growing body of evidence showing that aging changes how the brain reacts to emotional stimuli.
Studies to find better ways to preserve human eggs, ovarian tissue under way
bioman submitted, created time 1 year 5 months (www.eurekalert.org)
The goal is to make human eggs, ovarian tissue, blood vessels, even whole organs available when needed.
To get there, researchers are directly comparing slow-freezing techniques, used successfully for decades to preserve sperm and embryos, to a more rapid method of cryopreservation that transforms tissues into durable glass-like structures.
Locking childhood memories into the brain
diggman submitted, created time 1 year 7 months (arstechnica.com)
The topic under review is the issue of how early (even preconscious) childhood memories can be maintained so that they have significant influences on adult behavior. The authors are approaching this topic from a human perspective, noting that abuse and neglect can influence a wide variety of cognitive and emotional behaviors in humans that last well into adulthood
Are humans hard-wired for faith
broadcast submitted, created time 1 year 7 months (www.cnn.com)
Scientist working to track how the human brain processes religion, spirituality.And now raise a new field called neurotheology. The scientists find similar areas of the brain are affected during prayer and meditation
Study Reveals Why We Get Distracted So Easily
dovechocolate submitted, created time 1 year 7 months (www.livescience.com)
Neuroscientists have discovered distractions turn on different part of our brains and do so more quickly than the daily grind of paying attention. Separate regions are responsible for the different ways our brain focuses on the world around us. Scientists have always recognized two different ways that the brain processes information coming from the outside world. Willful focus produces what are called "top-down" signals, while automatic focus produces "bottom-up" signals. Neural activity goes up and down in a regular periodic way, with everything vibrating together.
Commonly used anaesthetic alters mouse brains
bioman submitted, created time 1 year 8 months (www.nature.com)
A study of mice has shown that exposure to widely used anaesthetic drugs increases production of a brain protein thought to cause Alzheimer's disease, means that general anaesthesia may be linked to dementia in humans. But also some are safe, early data suggest that not all volatile anaesthetics have the same brain effects as isoflurane.
Surprising synapses deep in the brain
fiona submitted, created time 1 year 8 months (www.nature.com)
Activity-dependent vesicular glutamate release from axon collaterals triggers AMPA-type currents in the precursors. This phenomenon might be involved in regulation of oligodendrocyte differentiation or remyelination
Scientists Try to Predict Intentions
penguin submitted, created time 1 year 8 months (www.livescience.com)
Scientist try to read people’s minds — using a brain scan to figure out their intention before it is turned into action. In the past, scientists had been able to detect decisions about making physical movements before those movements appeared. And now, for the first time, they identified people's decisions about how they would later do a high-level mental activity — in this case, adding versus subtracting. Of course, it is only the first step in reading people’s thought, and what would happen, if one day people’s mind can be predicted precisely?
Some brain functions actually improve with age
sunshine submitted, created time 1 year 8 months (www.nwfdailynews.com)
The aging brain is subject to a dreary litany of changes, but it is not al doom and gloom. Some mental functions actually get better.
Brain is malleable where vision is concerned
Darkfrog submitted, created time 1 year 9 months (web.mit.edu)
For years, it was believed that people who lost their sight at a formative age would never be able to regain full vision, even if their eyes were restored. However, a thirty-two year-old woman in India who regained her sight at age twelve contradicts this.
DNA2004 submitted, created time 1 year 9 months (www.nature.com)
Orexins are hypothalamic peptides that play an important role in maintaining wakefulness in mammals. Permanent deficit in orexinergic function is a pathophysiological hallmark of rodent, canine and human narcolepsy. Here we report that in rats, dogs and humans, somnolence is induced by pharmacological blockade of both orexin OX1 and OX2 receptors
Superbowl Ads Stimulate Threat Response
Darkfrog submitted, created time 1 year 9 months (www.sciam.com)
"The most ineffective ad was from Honda, which showed participants were less engaged during the ad than they were when they looked at a blank screen." Heavens, this made me laugh. A review of Superbowl ads in Scientific American. Let's see how much money they wasted this year.
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