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Recently, some neuroscientists have proposed that the function of sleep is to reorganize connections and “prune” synapses—the connections between brain cells. Last year, one group of researchers, led by Gordon Wang of Stanford University reviewed the evidence for this idea in a paper called Synaptic plasticity in sleep: learning, homeostasis and disease.
People were once thought to have ancient psyches ill-suited to modern existence, but they have adapted much more quickly than early theories had predicted
"While dinosaurs ruled the world some 200 million years ago, a group of nocturnal, shrewlike proto-mammals unwittingly sniffed out a strategy for survival that eventually led to the evolution of larger brains."
"This is a crude web presentation of the talk I gave at the University of Wisconsin Thursday noon Genetics Seminar series on April 28th, 2011. I’ve passed on the text I lectured from virtually untouched, inserting the slides shown...there may be some rough spots. "
"Dr. Steve Potter of Neuroengineering lab at Georgia Tech talks about how he is using living brain cells to implement living neural networks (LNNs). These LNNs are being used to control power systems being simulated on hardware at Missouri S&T, Rolla."
Uncomfortable as it is to contemplate, it is looking increasingly likely that our brains are not something to write home about after all. One group of researchers has scrutinised the primate archaeological record and concluded that the human brain has evolved just as would be expected for a primate of our size. Meanwhile, a biologist who has compared the number of neurons in the brains of all sorts of animals says there is nothing special about the human brain compared with other primates. No one is doubting the fact of human intelligence, but they say it can no longer be attributed to a "supersized" brain. Humans, apparently, are no more than ordinary primates with ordinary-sized brains. - life - 04 August 2010 - New Scientist
in list: Evolution
Yesterday I attended Dave Chalmers’ session of the Mind and Language Seminar where we discussed his new paper on the singularity. I have previously seen him give this talk at CUNY and I was looking forward to the commentary from Jesse and Ned and the discussion that followed.
Scientists have long known what psychopaths lack: emotions like empathy, fear and remorse. Now, a new study focuses on what they may have, a brain abnormality that may lead them to seek rewards like money, sex or fame at any cost.
in list: Neuroethics
Our own Michael Gazzaniga was recently honored with the opportunity to give the prestigious Gifford Lectures--joining the ranks of renowned thinkers ranging from William James and John Dewey to Hannah Arendt and Carl Sagan. Fortunately, his series of talks have been posted on-line.
The problem is that these hidden social interactions remain out of focus in the experiment. Our aim at the Interacting Minds project at the Danish Neuroscience Centre in Aarhus is to develop a new kind of experiment that is focused on such interactions. 02 December 2009 - New Scientist
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The idea that the adult brain changes with experience was once a radical idea, but it is now well accepted that certain areas—say, the motor cortex, when learning a new physical skill—can grow new neurons or create stronger connections.
By the year 2020, you won't need a keyboard and mouse to control your computer, say Intel Corp. researchers. Instead, users will open documents and surf the Web using nothing more than their brain waves.
in list: Clones, Drones and Cyborgs
The patient displayed impulsive sexual behavior with pedophilia, marked constructional apraxia, and agraphia. The behavioral symptoms and constructional deficits, including agraphia, resolved following tumor resection. Arch Neurol -- Abstract:
Beyond the hype of left brain versus right brain lies the work of acclaimed neuroscientist Michael Gazzaniga. His career was forged in the lab of Nobel laureate Roger Sperry, and together their trailblazing experiments have illuminated the differences between the brain's two hemispheres. All In The Mind - 14 November 2009 -
Evolution in humans is commonly thought to have essentially stopped in recent times. But there are plenty of examples that the human race is still evolving, including our brains, and there are even signs that our evolution may be accelerating.
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