Archive for the ‘Science’ Category

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Transcranial Magnetic Stimulation becoming more popular for treating Depression

February 7, 2012

A new magnetic therapy that treats major depression recently received a major boost when the government announced Medicare will cover the procedure in Illinois.

The treatment, called transcranial magnetic stimulation (TMS), sends short pulses of magnetic fields to the brain. TMS “is rapidly gaining momentum” said Dr. Murali Rao of Loyola University Medical Center, one of the first Chicago-area centers to offer TMS. There now are nearly 300 such centers in the United States.

At Loyola, about two-thirds of Rao’s TMS patients so far report that their depression has significantly lessened or gone away completely.

Before receiving TMS, Nan Miller had failed nine antidepressants and suffered increasingly severe cycles of depression over seven years. There were times when she couldn’t get out of bed or eat. “I just wanted to die,” she said. She had even tried electroconvulsive therapy (formerly known as electroshock) but did not want to consider that option anymore.

Miller said that a few weeks after beginning TMS treatments, she was eating lunch when she suddenly realized depression did not consume her anymore. “I could almost hear the chains breaking, the darkness lifting and the heaviness dissolving,” she said. “I feel about 10 years younger and 20 shades lighter.”

The Food and Drug Administration approved TMS in 2009 for patients who have major depression and have failed at least one antidepressant. The FDA has approved one TMS system, NeuroStar®, made by Neuronetics.

The patient reclines in a comfortable padded chair. A magnetic coil, placed next to the left side of the head, sends short pulses of magnetic fields to the surface of the brain. This produces currents that stimulate brain cells. The currents, in turn, affect mood-regulatory circuits deeper in the brain. The resulting changes in the brain appear to be beneficial to patients who suffer depression.

Each treatment lasts 35 to 40 minutes. Patients typically undergo three treatments per week for four to six weeks.

The treatments do not require anesthesia or sedation. Afterward, a patient can immediately resume normal activities, including driving. Studies have found that patients do not experience memory loss or seizures. Side effects include mild headache or tingling in the scalp, which can be treated with Tylenol.

Together, psychotherapy and antidepressants successfully treat only about one-third of patients who suffer major depression. TMS is a noninvasive treatment option now available for the other two-thirds of patients, who experience only partial relief from depression or no relief at all, Rao said.

Provided by Loyola University Health System. Via Medical Xpress

Previousy: Now Morality can be modified in the lab by disrupting a specific area of the brain with magnetic pulses.

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Simrishamn: Regional Algae Farm and HORTUS (Hydro Organisms Responsive To Urban Stimuli)

February 2, 2012

Amidst society’s hopes for a green future, the power of working with nature is still not sufficiently understood or exploited. Too many visions remain divorced from the end user. Claudia Pasquero and Marco Poletto, the architects and co-founders of London-based ecoLogicStudio, feel that ‘using and interacting with natural elements in a symbiotic way can become a game with ecological benefits.’ Recently they have focused on the potential of algae—micro-algae are used for energy, while macro-algae—like bio-radars or generative agents—is used for filtering water and making food.

New symbiotic algae and seafood/fish farms generated in Crane Greenhouses

As global regions undergo structural and demographic shifts, agritourism and algae farms have huge potential, but models need testing and feedback from people, so that prototypes can be optimally identified as multi-use educational resources related to their living context. ‘You don’t have so many choices at the moment. There is a detachment of production from consumption, when even recycling can be fun’, say ecoLogicStudio. Their Algae Farm for the Swedish Municipality of Simrishamn demonstrates the interactive potentials for algae-related urban activities and architectural prototypes. Here on the Ostersjiön region of Sweden on the Baltic Sea a decaying fishing industry and aging local population ‘calls for the introduction of a new type of economic and urban system.’

HORTUS (Hydro Organisms Responsive To Urban Stimuli) is a new exhibition from ecoLogicStudio that engages with the notions of urban renewable energy and agriculture through a new gardening prototype. Over a four-week growing period, flows of energy (light radiation), matter (biomass, carbon dioxide) and information (images, tweets, stats) will be triggered to induce multiple mechanisms of self-regulation and evolve novel forms of self-organisation. HORTUS proposes an experimental hands-on engagement with these notions, illustrating their potential applicability to the masterplanning of large regional landscapes and the retrofitting of industrial and rural architectural types, as exemplified in the project ‘Regional Algae Farm’ developed by ecoLogicStudio for the Swedish region of Osterlen.

Architectural Association School students, staff and visitors are invited to engage daily with HORTUS to invent new protocols of urban biogardening. A virtual organism such as this offers the opportunity to capture and build up information and cultivation practices, enriching the material experience of the visitor turned urban ‘cyber-gardener’.


Simrishamn Regional Algae Farm

Text and Images via AA and Domus. +++ info HERE

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Spelunking for Genes: A bone and a molar hold clues to a new branch of our family tree

February 2, 2012

ANCIENT HISTORY: The layers of sediment excavated in Denisova Cave (top left) and its surroundings have yielded such artifacts as chipping tools (top right), a fragment of a pinky bone, and a molar. DNA in the bone and molar led to the identification of a new hominin group, the Denisovans.Photos: Courtesy of David Reich (top left, top right, bottom right); Courtesy of the Max Planck Institute for Evolutionary Anthropology (bottom left, middle right)

Perched in the Altai Mountains of southern Siberia, and overlooking the Anui River and its surrounding forest, is the Denisova Cave. It is not a particularly large natural structure, but its high ceilings, central limestone chimney, and location near abundant food sources have made it an inviting shelter for humans and animals for tens of thousands of years.

“It’s kind of a magical cave,” says David Reich, an HMS professor of genetics who traveled to the site this past summer. It was a rugged trip, covering 5,500 miles on a 48-hour journey that began in Boston, touched London and Moscow, and finished with a bumpy 10-hour van ride to the Denisova Cave, near Russia’s border with Kazakhstan. But Reich, whose affiliation with the Broad Institute of MIT and Harvard means he’s more often surrounded by gene sequencers than Stone Age tools, took the opportunity to step inside this remote refuge to witness the resting spot of ancient DNA that had been preserved in bone fragments buried deep in cave sediments.

For the past year, Reich and an international team of evolutionary geneticists have been coaxing information from that DNA. What they’ve found has changed our understanding of human history.

DOWN TO EARTH: Excavation of Denisova Cave, a site overseen by the Russian Academy of Sciences, is an ongoing venture involving international teams of researchers. Photo: Courtesy of David Reich

Text and Images via Harvard Medicine. Continue HERE

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The Elements of ExoPlanets

February 2, 2012

By looking at the wavelengths of light from nearby stars, researchers have determined the abundance of certain elements for more than a hundred stars. Trace elements in such stars may influence their habitable zones, where planets with life might dwell.

A star’s energy comes from the combining of light elements into heavier elements in a process known as fusion. Our Sun is currently burning, or fusing, hydrogen to helium. After the hydrogen in the star’s core is exhausted, the star can burn helium to form progressively heavier elements, carbon and oxygen and so on, until iron and nickel are formed. Supernova explosions result when the cores of massive stars have exhausted their fuel supplies and burned everything into iron and nickel. Credit: NASA

Trace elements in stars may influence the evolution of habitable zones around them where life as we know it might dwell, scientists now find.

Stars are made nearly entirely from hydrogen and helium gas. Still, traces of heavier elements — which astronomers call metals, even if they are not what one normally think of as metals — can be found in stars as well, either inherited from the remains of older stars or forged via nuclear fusion.

Scientists can detect what elements a star possesses by looking at its light, which comes in a wide variety of wavelengths, some visible, many invisible. The wavelengths of light that matter emits often comes in specific clumps or lines, which can act like a fingerprint, revealing the identity of the material in question.

By looking at the wavelengths or spectra of light from nearby dwarf stars as part of searches for alien worlds, or exoplanets, researchers have with high precision determined the abundance of certain elements for more than a hundred of these stars, with more to come. Now researchers suggest variations in the compositions of these stars could impact the habitable zones around them.

Text and Images via Physorg. Continue HERE

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Low IQ & Conservative Beliefs Linked to Prejudice

January 30, 2012

There’s no gentle way to put it: People who give in to racism and prejudice may simply be dumb, according to a new study that is bound to stir public controversy.

The research finds that children with low intelligence are more likely to hold prejudiced attitudes as adults. These findings point to a vicious cycle, according to lead researcher Gordon Hodson, a psychologist at Brock University in Ontario. Low-intelligence adults tend to gravitate toward socially conservative ideologies, the study found. Those ideologies, in turn, stress hierarchy and resistance to change, attitudes that can contribute to prejudice, Hodson wrote in an email to LiveScience.

“Prejudice is extremely complex and multifaceted, making it critical that any factors contributing to bias are uncovered and understood,” he said.

Controversy ahead

The findings combine three hot-button topics.

“They’ve pulled off the trifecta of controversial topics,” said Brian Nosek, a social and cognitive psychologist at the University of Virginia who was not involved in the study. “When one selects intelligence, political ideology and racism and looks at any of the relationships between those three variables, it’s bound to upset somebody.”

Polling data and social and political science research do show that prejudice is more common in those who hold right-wing ideals that those of other political persuasions, Nosek told LiveScience. [7 Thoughts That Are Bad For You]

“The unique contribution here is trying to make some progress on the most challenging aspect of this,” Nosek said, referring to the new study. “It’s not that a relationship like that exists, but why it exists.”

Written by Stephanie Pappas, Live Science. Read Article HERE

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The Morality Pill

January 30, 2012

Writing in the New York Times, Peter Singer and Agata Sagan ask “Are We Ready for a ‘Morality Pill’?” I dunno. Why?

The infamous Milgram and Stanford Prison experiments showed that given the right circumstances, most of us act monstrously. Indeed, given pretty mundane circumstances, most of us will act pretty callously, hustling past people in urgent need in simply to avoid the hassle. But not all of us do this. Some folks do the right thing anyway, even when it’s not easy. Singer and Sagan speculate that something special must be going on in those peoples’ brains. So maybe we can figure out what that is and put it in a pill!

If continuing brain research does in fact show biochemical differences between the brains of those who help others and the brains of those who do not, could this lead to a “morality pill” — a drug that makes us more likely to help?

The answer is: no. And I think the question invites confusion. Morality is not exhausted by helping. Anyway, help do what?

Singer is perhaps the world’s most famous utilitarian, so maybe he’s got “help people feel more pleasure and less pain” in mind. Since utilitarianism is monomaniacally focused on how people feel, it can be tempting for utilitarians to see sympathy and the drive to ease suffering as the principal moral sentiments. But utilitarianism does not actually prescribe that we should be motivated to minimize suffering and maximize happiness. It tells us to do whatever minimizes suffering and maximizes happiness. It’s possible that wanting to help and trying to help doesn’t much help in this sense.

Written by Will Wilkinson, Big Think. Continue HERE

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Sonicating sperm — the future of male contraception. Confirmed to work

January 30, 2012

Imagine a contraceptive that could, with one or two painless 15-minute non-surgical treatments, provide months of protection from pregnancy. And imagine that the equipment needed were already in physical therapists’ offices around the world.

Sound too good to be true? For years, scientists thought so too. But new research headed by Dr. James Tsuruta in the Department of Pediatrics at the University of North Carolina-Chapel Hill, published Monday in the journal Reproductive Biology and Endocrinology, is gaining the contraceptive method increased respect. The kicker: This treatment would be for men—giving them the first new option since condoms and vasectomy were introduced more than a century ago.

HOW IT WORKS

The testes need to be slightly cooler than the rest of the body to properly produce sperm—the subject of countless jokes and warnings about hot tubs, laptops, and tight pants. But although hot tub or laptop use can push a man’s sperm count over the edge if he’s already low, it’s not reliable enough for contraception. What if this heat effect could be enhanced?

That’s where ultrasound comes in. Relatively inexpensive and already in use in physical therapists’ offices around the world, therapeutic ultrasound (as opposed to diagnostic ultrasound) heats deeply and increases circulation to injured joints. The physical therapist applies lubricating gel to the joint, turns on the machine, and runs the wand back and forth over the joint for 5 or 10 minutes, creating a pleasant warming sensation.

It turns out, though, that ultrasound can be used on other body parts as well. That includes the testes, and it would be for contraception rather than healing. In the current study, researchers got more than 2 1/2 months—and possibly long-lasting—contraception in rats with two 15-minute sessions of ultrasound, two days apart. And their study is the first to provide detailed insight into how ultrasound might be working, using modern equipment. But the published evidence that it works has been in plain sight for more than 35 years—not taken seriously until recently.

Via Medical Xpress. Continue HERE

Image above taken from the film “Every Thing You Always Wanted to Know About Sex” by Woody Allen.

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Cloning scientists create human brain cells

January 30, 2012

Scientists in Edinburgh who pioneered cloning have made a technological breakthrough that could pave the way for better medical treatment of mental illnesses and nerve diseases.

Scientist Ian Wilmut with Dolly, the worlds first cloned sheep, at the Roslin Institute near Edinburgh in 2001. Photograph: Murdo Macleod

The news that Edinburgh scientists had created the world’s first cloned mammal, Dolly the sheep, at the university’s Roslin Institute made headlines around the world 16 years ago. Her birth raised hopes of the creation of a new generation of medicines – with a host of these breakthroughs occurring at laboratories in the university over the following decade.

And now one of the most spectacular has taken place at Edinburgh’s Centre for Regenerative Medicine, where scientists have continued to develop the technology used to make Dolly. In a series of remarkable experiments, they have created brain tissue from patients suffering from schizophrenia, bipolar depression and other mental illnesses.

The work offers spectacular rewards for doctors. From a scrap of skin taken from a patient, they can make neurones genetically identical to those in that person’s brain. These brain cells, grown in the laboratory, can then be studied to reveal the neurological secrets of their condition.

“A patient’s neurones can tell us a great deal about the psychological conditions that affect them, but you cannot stick a needle in someone’s brain and take out its cells,” said Professor Charles french-Constant, the centre’s director.

Written by Robin McKie, The Observer. Continue HERE

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ASTRONOMICAL: On the Revolutions of the Celestial Spheres

January 30, 2012

A scale model of our solar system in twelve 500 page volumes printed-on-demand. On page 1 the Sun, on page 6,000 Pluto. The width of each page equals one million kilometers.

This film takes us through the first volume where we encounter the Sun, Mercury, Venus, Earth, Mars and the Asteroid Belt.

Order the set from mishkahenner.com

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Accept Defeat: The Neuroscience of Screwing Up

January 30, 2012

It all started with the sound of static. In May 1964, two astronomers at Bell Labs, Arno Penzias and Robert Wilson, were using a radio telescope in suburban New Jersey to search the far reaches of space. Their aim was to make a detailed survey of radiation in the Milky Way, which would allow them to map those vast tracts of the universe devoid of bright stars. This meant that Penzias and Wilson needed a receiver that was exquisitely sensitive, able to eavesdrop on all the emptiness. And so they had retrofitted an old radio telescope, installing amplifiers and a calibration system to make the signals coming from space just a little bit louder.

But they made the scope too sensitive. Whenever Penzias and Wilson aimed their dish at the sky, they picked up a persistent background noise, a static that interfered with all of their observations. It was an incredibly annoying technical problem, like listening to a radio station that keeps cutting out.

At first, they assumed the noise was man-made, an emanation from nearby New York City. But when they pointed their telescope straight at Manhattan, the static didn’t increase. Another possibility was that the sound was due to fallout from recent nuclear bomb tests in the upper atmosphere. But that didn’t make sense either, since the level of interference remained constant, even as the fallout dissipated. And then there were the pigeons: A pair of birds were roosting in the narrow part of the receiver, leaving a trail of what they later described as “white dielectric material.” The scientists evicted the pigeons and scrubbed away their mess, but the static remained, as loud as ever.

For the next year, Penzias and Wilson tried to ignore the noise, concentrating on observations that didn’t require cosmic silence or perfect precision. They put aluminum tape over the metal joints, kept the receiver as clean as possible, and hoped that a shift in the weather might clear up the interference. They waited for the seasons to change, and then change again, but the noise always remained, making it impossible to find the faint radio echoes they were looking for. Their telescope was a failure.

Written by Jonah Lehrer, WIRED. Continue HERE

Image: Cristiana Couceiro, Scientis: Getty Images

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Richard Dawkins at the Jaipur Literarture Festival

January 27, 2012
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Ancient Astronomers Were No Fools

January 27, 2012

There’s no doubt ancient astronomers were clever folk. Realizing Earth was round, estimating the Sun’s distance, discovering heliocentricity — it’s quite a list. But Brad Schaefer (Louisiana State University) suggested at the recent American Astronomical Society meeting in Austin that we should add another light bulb to the glow shining from history: ancient astronomers may have corrected for dimming caused by the atmosphere, centuries before anyone came up with a physical model for it.

This dimming is called atmospheric extinction. Extinction happens because starlight has to pass through Earth’s atmosphere in order to reach us. But the effect isn’t uniform: if you spend time stargazing you’ve probably noticed that a star high up in the sky’s dome looks brighter than it does as it slides toward the horizon. That’s because light coming to us from near the horizon passes through more atmosphere than if it shines straight down from overhead. (The Sun looks redder at sunset and sunrise for the same reason.)

Astronomers have cataloged stars’ magnitudes for at least two millennia, all the way back to an ancient document called the Almagest. It was the Almagest that Schaefer began with — but his goal wasn’t to determine if astronomers in olden days accounted for extinction. He wanted to use the brightnesses reported in it to decide a long-standing debate over who wrote the catalog in the first place, Hipparchus of Rhodes (circa 150 BC) or Ptolemy of Alexandria (circa AD 150).

Written by Camille Carlisle, SKY & Telescope. Continue HERE

Image above: Frontispiece illustration from a Venetian 1496 edition of the Almagest, depicting Ptolemy instructing the 15th-century astronomer Regiomontanus (also known as Johannes Müller von Königsberg). Above the men is the zodiac, encircling the celestial sphere. Zachariel / Wikimedia Commons

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The Power of Introverts: A Manifesto for Quiet Brilliance

January 27, 2012

Author Susan Cain explains the fallacy of “groupwork,” and points to research showing that it can reduce creativity and productivity.

Do you enjoy having time to yourself, but always feel a little guilty about it? Then Susan Cain’s “Quiet : The Power of Introverts” is for you. It’s part book, part manifesto. We live in a nation that values its extroverts – the outgoing, the lovers of crowds – but not the quiet types who change the world. She recently answered questions from Mind Matters editor Gareth Cook.

Cook: This may be a stupid question, but how do you define an introvert? How can somebody tell whether they are truly introverted or extroverted?

Cain: Not a stupid question at all! Introverts prefer quiet, minimally stimulating environments, while extroverts need higher levels of stimulation to feel their best. Stimulation comes in all forms – social stimulation, but also lights, noise, and so on. Introverts even salivate more than extroverts do if you place a drop of lemon juice on their tongues! So an introvert is more likely to enjoy a quiet glass of wine with a close friend than a loud, raucous party full of strangers.

It’s also important to understand that introversion is different from shyness. Shyness is the fear of negative judgment, while introversion is simply the preference for less stimulation. Shyness is inherently uncomfortable; introversion is not. The traits do overlap, though psychologists debate to what degree.

Continue on Live Science HERE

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Imagining the Tenth Dimension: A New Way of Thinking About Time and Space

January 26, 2012


Rob Bryanton made his first record at twelve, and was host of a regional CBC-TV music series at twenty. He is the President of Talking Dog Studios (www.talkingdogstudios.com) in Regina, Saskatchewan, Canada, which specializes in music and sound for film and television. He has been nominated eight times in the last eight years for Canada’s prestigious Gemini Awards, four times in the category “Best Original Music Score for a Dramatic Series”, and four times for “Best Sound for a Dramatic Program”. Recent projects to which Rob has contributed his talents as a composer and sound mixer include the hugely popular CTV series “Corner Gas”, plus the historical mini-series “Prairie Giant: The Tommy Douglas Story” (CBC-TV). Rob is also responsible for the theme and underscoring on CBC’s Canadian Antiques Roadshow. While Rob has had poems and song lyrics published in several anthologies over the past decade, “Imagining the Tenth Dimension” is his first book. It represents the culmination of a lifelong fascination with science, philosophy, and the nature of reality which, as he tells in the book, began at the age of seven. Rob is also the current President of the Saskatchewan Motion Picture Association, and is an active volunteer in his community. A typical stubborn prairie boy, he is proud to have built a career for himself as a composer and sound mixer in his home town, and to have been a part of Saskatchewan’s burgeoning film and television industry for the past 30 years. Rob lives in Regina with his wife Gail and their dog Buddy. Gail and Rob have two sons, Todd and Mark. Text taken from Amazon

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“Twelve Lessons (Most of Which I Learned the Hard Way) for Evolutionary Psychologists” by Dan Fessler

January 24, 2012

Dan Fessler: As an undergraduate, most of the professors in the Anthropology Department at my university practiced psychological anthropology, a subfield of sociocultural anthropology that combines theories from various branches of psychology with the study of culture. I decided that I was going to be a psychological anthropologist, and I continued on at the same university, with the same professors, for my graduate degrees. Although I was confident that, to understand human behavior, it was necessary to investigate the interaction of mind and culture, I nevertheless became increasingly dissatisfied with psychological anthropology, which lacks an overarching theory from which to derive hypotheses, and which often eschews hypothesis testing in favor of description and interpretation. Anthropologists usually emphasize the differences between people in different societies, yet, during my doctoral field research, I was impressed by the underlying universalities in human emotions. I began thinking more about human evolution, and, with guidance from several primatologists, I gradually began to invent my own version of evolutionary psychology. I was unaware that such a discipline was already emerging – indeed, many of my ‘new’ ideas had already been formulated more clearly by others. It was a revelation when I attended my first meeting of the Human Behavior and Evolution Society, and discovered a whole field devoted to my area of interest.

Via The International Cognition & Culture Institute’s Blog. Continue HERE

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“Playing God” a BBC Horizon Documentary

January 23, 2012

Adam Rutherford meets a new creature created by American scientists – the spider-goat. It is part goat, part spider, and its milk can be used to create artificial spider’s web.

It is part of a new field of research, synthetic biology, with a radical aim: to break down nature into spare parts so that we can rebuild it however we please.

This technology is already being used to make bio-diesel to power cars. Other researchers are looking at how we might, one day, control human emotions by sending ‘biological machines’ into our brains.

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Paralyzed man moves robotic arm with his thoughts

January 23, 2012

Seven years after a motorcycle accident damaged his spinal cord and left him paralyzed, 30-year-old Tim Hemmes reached up to touch hands with his girlfriend in a painstaking and tender high-five. For more information about the trial, visit UPMC.com/BCI

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Are We the Reason for the Universe’s Existence? The Anthropic Principle Reconsidered

January 23, 2012

Multiverse by BellaCielo

You are special. Don’t worry, this is not the start of yet another Joel Osteen sermon. I mean only that your existence, itself a wildly improbable fact, increasingly seems to be the only peg on which cosmologists can hang the existence of our Universe.

Oh, and not just you, by the way. I’m special, too. All of us observers capable of wondering why we are here are special, because we contribute to what is known as the Anthropic Principle. Here’s the nub of it, given by Stephen Hawking and a colleague in 1973: “The answer to the question ‘why is the universe [the way it is]?’ is ‘because we are here.’”

There’s something odd about that. As the cosmologist George F.R. Ellis notes, the Anthropic Principle sends the arrow of causation winging, feathers first, back to the bow. It declares, to paraphrase DesCartes, “I think, therefore the Multiverse.”

Written by Clay Farris Naff at the Huffington Post. Continue HERE

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3D printer and living “ink” create cartilage

January 23, 2012

Lawrence Bonassar, Ph.D., Associate Professor of Biomedical Engineering, describes a cutting-edge process he has developed in which he uses a 3D Printer and “ink” composed of living cells to create body parts such as ears.

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Searching the Brain for the Roots of Fear

January 23, 2012

Alex Gorodskoy

You are taking a walk in the woods ― pleasant, invigorating, the sun shining through the leaves. Suddenly, a rattlesnake appears at your feet. You experience something at that moment. You freeze, your heart rate shoots up and you begin to sweat ― a quick, automatic sequence of physical reactions. That reaction is fear.

A week later, you are taking the same walk again. Sunshine, pleasure, but no rattlesnake. Still, you are worried that you will encounter one. The experience of walking through the woods is fraught with worry. You are anxious.

This simple distinction between anxiety and fear is an important one in the task of defining and treating of anxiety disorders, which affect many millions of people and account for more visits to mental health professionals each year than any of the other broad categories of psychiatric disorders.

Scientists generally define fear as a negative emotional state triggered by the presence of a stimulus (the snake) that has the potential to cause harm, and anxiety as a negative emotional state in which the threat is not present but anticipated. We sometimes confuse the two: When someone says he is afraid he will fail an exam or get caught stealing or cheating, he should, by the definitions above, be saying he is anxious instead.

Written by JOSEPH LEDOUX at the NYT. Continue HERE

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How dogs interpret human communication

January 22, 2012

Sit a dog in front of a television screen, and it may not always look intently at what it sees. But show a person on that screen who looks directly at the dog and says “hello,” and the canine will pay attention. In fact, a new study shows that a dog will go so far as to follow the gaze of the human onscreen when he or she looks to one side or the other – something not even chimps can do.

Researchers already knew that dogs were attuned to human communication signals. In addition to their obvious facility at learning commands, dogs, like young children, can signal where a human puts an object if the human feigns ignorance, even if it’s been moved, and they follow the direction of our finger when we point at things, a task chimps fail at. But are dogs capable of following more subtle cues, such as our shifting gaze?

To find out, cognitive scientist Erno Teglas of the Central European University in Budapest, Hungary, adapted a technique that had previously been used only on children. In one example of the test, a child watches a woman on a video screen who has toys on either side of her. The woman then either looks straight toward the camera and says “hello” in a high-pitched voice known to engage children or looks downward and says “hello” in a more dull, low-pitched voice. Then the person looks to the toy on one side or the other for 5 seconds. Whether a child also looks at the toy on the same side is recorded.

Written by Sarah C.P. Williams, Washington Post. Continue HERE

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Seeing with Eyes Closed by Ivana Franke

January 21, 2012

The installation Seeing with Eyes Closed concerns the visual experience of flowing images induced by stroboscopic light behind closed eyes. Being aware that the seen images have no foundation in external reality, one experiences them as hallucinatory. This ‘conscious quasi-hallucinating’ challenges our sense of the real in its alternation and its permeability with the imaginary. Each person’s experience differs from that of others, and each ascribes different dimensions to the perceived space in constant transformation. Communicating the content of this ephemeral flux of unpredictable percepts stretches the limits of acquiring a subjective report to extremes, and challenges the scientific aspiration to precisely measure the timing of conscious phenomena.

With the unpredictability of visual responses to light stimuli, participation in the art installation raises the question of subjectivity and authorship. The final “work” happens in our body and depends on our experience as well as on the boundary between the public and intimate space.

Video documentation of Seeing with eyes closed, 2011
Edit: Luka Goreta, Dominik Markušić
Sound: Mika Vainio “Radio”

Exhibition opening and talk: 14/02/2012 at 19.00 h
Art and Neuroscience in dialogue

Invited speakers: artist Ivana Franke, neuroscientist Ida Momennejad, neurosurgeon Ulrich-Wilhelm Thomale
Moderator: curator Sunčica Ostoić
The talk will be in English.

More info via Lauba

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OrcaM is new kid on block for 3-D data capture

January 21, 2012

Call it automated photograph station, seven-camera system, 3-D model showcase, or digital reconstruction tool. OrcaM is being described as all these things. Whatever the tag, the “OrcaM” name stands for Orbital Camera System, according to its Germany-based developers NEK GmbH. A video demo was making the rounds of web gadget blogs and news sites this week as a camera system to watch.

The OrcaM system involves a large sphere, likened by one viewer as a giant maw, inside which one places the desired object for 3-D scanning. Once the object is placed inside, the sphere is sealed shut and the seven cameras and lights go to work. The cameras take simultaneous high-definition photos of the object at different angles. Serving to define the object’s geometry, various combinations of lights illuminate the object differently for every shot, capturing the finest details. After the photo processing, computer processing of the image creates the 3-D model. Observers say the end result is a highly impressive agreement of the real object.

This video demonstrates the OrcaM 3D reconstruction system, developed in the context of a project of the department Augmented Vision of DFKI (http://av.dfki.de)

For OrcaM Reconstruction Sequences (“Female Torso” Wilhelm Lembruck) see:
http://youtu.be/h320lM5DYlY

In this video it is shown how the hardware is opened to insert an object to be reconstructed. Currently the maximum size of objects is limited to 80cm diameter and a weight of approximately 100kg.
After closing the sphere again the acquisition process is fully automatic, though tuneable to account for complicated object geometries. Please note that the acquisition process has been extremely condensed and only drafts some steps necessary to acquire the respective information for a single camera position. I.e. horizontal and vertical fringe projection, directed illumination with light(patches), rotation of the carrier, etc. After the acquisition process the reconstruction of the object is computed fully automatic. A rendered result of the vase can be found at the end of the video. Note first that the rendering has been performed using a real world high-resolution HDR environment, which is reflecting in the vase and which introduces a pretty high amount of blue sky color to the rendering. Secondly note that the reconstructed vase is NOT symmetric, which is in perfect agreement with the original.

Text and Images Via Physorg

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What Happened Before the Big Bang? The New Philosophy of Cosmology

January 20, 2012

What existed before the big bang? What is the nature of time? Is our universe one of many? On the big questions science cannot (yet?) answer, a new crop of philosophers are trying to provide answers.

Last May, Stephen Hawking gave a talk at Google’s Zeitgeist Conference in which he declared philosophy to be dead. In his book The Grand Design, Hawking went even further. “How can we understand the world in which we find ourselves? How does the universe behave? What is the nature of reality? Where did all this come from? Traditionally these were questions for philosophy, but philosophy is dead,” Hawking wrote. “Philosophy has not kept up with modern developments in science, particularly physics.”

In December, a group of professors from America’s top philosophy departments, including Columbia, Yale, and NYU, set out to establish the philosophy of cosmology as a new field of study within the philosophy of physics. The group aims to bring a philosophical approach to the basic questions at the heart of physics, including those concerning the nature, age and fate of the universe. This past week, a second group of scholars from Oxford and Cambridge announced their intention to launch a similar project in the United Kingdom.

One of the founding members of the American group, Tim Maudlin, was recently hired by New York University, the top ranked philosophy department in the English-speaking world. Maudlin is a philosopher of physics whose interests range from the foundations of physics, to topics more firmly within the domain of philosophy, like metaphysics and logic.

Yesterday I spoke with Maudlin by phone about cosmology, multiple universes, the nature of time, the odds of extraterrestrial life, and why Stephen Hawking is wrong about philosophy.

Written by Ross Andersen. Interview with Tim Maudlin HERE

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Say hello to intelligent pills – Digital system tracks patients from the inside out.

January 19, 2012

Helius: Proteus Biomedical intelligent pills

Proteus Biomedical, a company based in Redwood City, California, announced on 13 January that it would be launching a “digital health product” in the United Kingdom in collaboration with the pharmacy chain Lloydspharmacy.

This product, called Helius, will include “sensor-enabled tablets” to monitor patients’ medication use. Compliance with doctors’ instructions has been identified as a problem area in medicine, especially when patients are prescribed multiple drugs that may need to be taken at different times.

“The most important and basic thing we can monitor is the actual physical use of the medicine,” says Andrew Thompson, chief executive of Proteus. “We have tested the system in hundreds of patients in many different therapeutic areas. It’s been tested in tuberculosis, in mental health, in heart failure, in hypertension and in diabetes.”

Via Nature. Continue HERE

The mechanical design of Philips Research’s intelligent capsule (iPill)

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Surgical robots: The kindness of strangers

January 19, 2012

RAVENS have a bad reputation. Medieval monks, who liked to give names to everything (even things that did not need them), came up with “an unkindness” as the collective noun for these corvids. Blake Hannaford and his colleagues at the University of Washington, in Seattle, however, hope to change the impression engendered by the word. They are about to release a flock of medical robots with wing-like arms, called Ravens, in the hope of stimulating innovation in the nascent field of robotic surgery.

Robot-assisted surgery today is dominated by the da Vinci Surgical System, a device that scales down a surgeon’s hand movements in order to allow him to perform operations using tiny incisions. That leads to less tissue damage, and thus a quicker recovery for patients. Thousands of da Vincis have been made, and they are reckoned to be used in over 200,000 operations a year around the world, most commonly hysterectomies and prostate removals.

But the da Vinci is far from perfect. It is immobile and weighs more than half a tonne, which limits its deployability, and it costs $1.8m, which puts it beyond the reach of all but the richest institutions. It also uses proprietary software. Even if researchers keen to experiment with new robotic technologies and treatments could afford one, they cannot tinker with da Vinci’s operating system.

Via The Economist. Continue HERE

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Are There Fundamental Laws of Cooking?

January 19, 2012

Cooking is a field that has in recent years seen a shift from the artistic to the scientific. While there are certainly still subjective and somewhat impenetrable qualities to one’s cuisine — de gustibus non est disputandum — there is an increasing rigor in the kitchen. From molecular gastronomy to Modernist Cuisine, there is a rapid growth in the science of cooking.

And mathematics is also becoming part of this. For example, Michael Ruhlman has explored how certain ingredient ratios can allow one to be more creative while cooking. Therefore, it should come as no surprise that we can go further, and even use a bit of network science, when it comes to thinking about food.

Yong-Yeol Ahn and his colleagues, in a recent paper titled Flavor network and the principles of food pairing, explored the components of cooking ingredients in different regional cuisines. In doing so, they were able to rigorously examine a recent claim: the food pairing hypothesis. The food pairing hypothesis is the idea that foods that go best together contain similar molecular components. While this sounds elegant, Ahn and his collaborators set out to determine whether or not this is true.

Written by Samuel Arbesman at Wired. Continue HERE

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Viscous thread falling on a moving belt

January 16, 2012

A stream of very viscous syrup falls from a nozzle onto a moving belt. Initially, the belt is moving so fast that the thread is just pulled out straight. As the speed of the belt is reduced, the thread first bifurcates to a meandering state, and then to a “figure eight” state. Finally, the thread falls into a coiling motion similar to what it would do on a non-moving surface.

The syrup is Newtonian.

See http://www.physics.utoronto.ca/nonlinear/papers_thread.html

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The Terasem Journals

January 15, 2012




The Terasem Journals
include The Journal of Geoethical Nanotechnology and The Journal of Personal Cyberconsciousness. They are the journals of the Terasem Movement, Inc., a not-for-profit charity endowed for the purpose of educating the public on the practicality and necessity of greatly extending human life, consistent with diversity and unity, via geoethical nanotechnology and personal cyberconsciousness.

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