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Tuesday, February 1, 2011

Brain can learn to overcome sleep apnea, study suggests

Obstructive sleep apneaImage via WikipediaBrain can learn to overcome sleep apnea, study suggests

Brain Can Learn to Overcome Sleep Apnea, Study Suggests

ScienceDaily (Feb. 1, 2011) — New research from the University of Toronto could provide some restful nights for the 18 million North Americans who suffer from obstructive sleep apnea.
In a recent study that appeared in the Journal of Neuroscience, scientists from the University demonstrated that repeated obstruction of the airways requires release of the brain chemical noradrenaline. The release of this chemical helps the brain learn to breathe more effectively and purposefully.
"What we showed is that repeated disruption of normal lung activity -- what happens during sleep apnea -- triggers a form of learning that helps you breathe better. This type of brain plasticity could be harnessed to help overcome the breathing insufficiency that typifies sleep apnea" says Dr. John Peever, Associate Professor of neuroscience and lead author of the study.
In order to mimic the experience of severe sleep apnea, the scientists induced short 15 second apneas in sedated rats by repeatedly restricting airflow into the lungs. They found repeated apneas caused the brain to progressively trigger more forceful contraction of the respiratory muscles, which caused an increase in breathing. This increase in breathing lasted for over an hour.
Peever says it seems the brain is using the unwanted side-effects of sleep apnea to help it learn to prevent future apneas by increasing the depth of breathing.
This study also pinpointed the brain chemical that allows this type of plasticity to occur. They found that noradrenaline is required in the case of repeated apneas to cause brain plasticity and enhance breathing.
These findings are important because they suggest that artificial manipulation with common drugs that affect noradrenaline levels in the brain could also help improve breathing in patients suffering from sleep apnea. This work could serve as the potential basis for developing the long sought after pill for sleep apnea.
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Tuesday, January 25, 2011

Inside the Mind

Many 18th c. treatments for psychological dist...Image via WikipediaInside the Mind

Boost Creativity: 7 Unusual Psychological Techniques

Boost Creativity: 7 Unusual Psychological Techniques

creativity
Looking for the last piece of the puzzle? Try these 7 research-based techniques for increasing creativity.
Everyone is creative: we can all innovate given time, freedom, autonomy, experience to draw on, perhaps a role model to emulate and the motivation to get on with it.
But there are times when even the most creative person gets bored, starts going round in circles, or hits a cul-de-sac. So here are 7 unusual creativity boosters that research has shown will increase creativity:

1. Psychological distance

People often recommend physical separation from creative impasses by taking a break, but psychological distance can be just as useful.
Participants in one study who were primed to think about the source of a task as distant, solved twice as many insight problems as those primed with proximity to the task (Jia et al., 2009).
◊ For insight: Try imagining your creative task as distant and disconnected from your current location. This should encourage higher level thinking.

2. Fast forward in time

Like psychological distance, chronological distance can also boost creativity.
Forster et al. (2004) asked participants to think about what their lives would be like one year from now. They were more insightful and generated more creative solutions to problems than those who were thinking about what their lives would be like tomorrow.
Thinking about distance in both time and space seems to cue the mind to think abstractly and consequently more creatively.
◊ For insight: Project yourself forward in time; view your creative task from one, ten or a hundred years distant.

3. Absurdist stimulation

The mind is desperate to make meaning from experience. The more absurdity it experiences, the harder it has to work to find meaning.
absurd
Participants in one study read an absurd short story by Franz Kafka before completing a pattern recognition task (Proulx, 2009). Compared with control participants, those who had read the short story showed an enhanced subconscious ability to recognise hidden patterns.
◊ For insight: read Alice in Wonderland, Kafka's Metamorphosis, or any other absurdist masterpiece. Absurdity is a 'meaning threat' which enhances creativity.

4. Use bad moods

Positive emotional states increase both problem solving and flexible thinking, and are generally thought to be more conducive to creativity. But negative emotions also have the power to boost creativity.
One study of 161 employees found that creativity increased when both positive and negative emotions were running high (George & Zhou, 2007). They appeared to be using the drama in the workplace positively.
◊ For insight: negative moods can be creativity killers but try to find ways to use them—you might be surprised by what happens.

5. Combining opposites

Interviews with 22 Nobel Laureates in physiology, chemistry, medicine and physics as well as Pulitzer Prize winning writers and other artists has found a surprising similarity in their creative processes (Rothenberg, 1996).
janus
Called 'Janusian thinking' after the many-faced Roman god Janus, it involves conceiving of multiple simultaneous opposites. Integrative ideas emerge from juxtapositions, which are usually not obvious in the final product, theory or artwork.
Physicist Niels Bohr may have used Janusian thinking to conceive the principle of complementarity in quantum theory (that light can be analysed as either a wave or a particle, but never simultaneously as both).
◊ For insight: set up impossible oppositions, try ridiculous combinations. If all else fails, pray to Janus.

6. Path of most resistance

When people try to be creative they usually take the path of least resistance by building on existing ideas (Ward, 1994). This isn't a problem, as long as you don't mind variations on a theme.
If you want something more novel, however, it can be limiting to scaffold your own attempts on what already exists. The path of most resistance can lead to more creative solutions.
◊ For insight: because it's the path of least resistance, every man and his dog is going up and down it. Try off-road.

7. Re-conceptualisation

People often jump to answers too quickly before they've really thought about the question. Research suggests that spending time re-conceptualising the problem is beneficial.
Mumford et al. (1994) found that experimental participants produced higher quality ideas when forced to re-conceive the problem in different ways before trying to solve it. Similarly a classic study of artists found that those focused on discovery at the problem-formulation stage produced better art (Csikszentmihalyi & Getzels, 1971).
◊ For insight: forget the solution for now, concentrate on the problem. Are you asking the right question?

Everyday creativity

Despite all the high falutin talk of Nobel Prize winners and artists, all of these methods can be applied to everyday life.
Combining opposites, choosing the path of most resistance, absurdism and the rest can just as easily be used to help you choose a gift for someone, think about your career in a new way or decide what to do at the weekend. 'Off-duty' creativity is just as important, if not more so, than all that 'serious' creativity.

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Feeling Robotic Arms Improves Brain Machine Interfaces

Inside the Mind

Feeling Robotic Arms Improves Brain Machine Interfaces | Neuroscience News

Monkey operating a robotic arm with brain–comp...Image via WikipediaFeeling Robotic Arms Improves Brain Machine Interfaces | Neuroscience News



Proprioception feedback of a robotic arm helped improve the performance ofmonkeys using brainmachine interfaces to control a computer cursor. When the monkeys were fit with exoskeletons that provided arm movements synchronized with the cursor movement, control of the cursor improved by 40%.
These findings could lead to better brain machine interfaces for some suffering from spinal cord injuries.

Robot arm improves performance of brain-controlled device

Adding sensory feedback could help spinal cord injury patients operate computers, robots
The performance of a brain-machine interface designed to help paralyzed subjects move objects with their thoughts is improved with the addition of a robotic arm providing sensory feedback, a new study from the University of Chicago finds.
Devices that translate brain activity into the movement of a computer cursor or an external robotic arm have already proven successful in humans. But in these early systems, vision was the only tool a subject could use to help control the motion.
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Friday, January 21, 2011

No More "Mental Retardation." So?

No More "Mental Retardation." So?

No More "Mental Retardation." So?

January 20, 2011| View Comments





By Leticia Velasquez
Given the choice, I would prefer my daughter to be called a "retard" and know that abortion of babies with Down syndrome had ceased.
Early last month President Barack Obama signed a law decreeing that federal statutes must no longer use the term "mental retardation." The phrase replacing it will be "intellectual disability."
Many Down syndrome advocates were jubilant, but I am more skeptical. Working in London in the 1980s I was shocked by the name on a building near my home: The Spastic Society. In the United States, we had long before ceased calling those with cerebral palsy "spastics" and I found the term antiquated and offensive. It seems that, every few decades, old terms for those with physical disabilities or cognitive delays are abandoned in favor of new ones, since existing terms have developed a negative connotation.
But drawing a new word from the thesaurus is not enough. We have to respect the right of the mentally disabled to exist. We need to stop aborting them. Changing vocabulary, while significant, can only get you so far.
As a writer who is also in the pro-life movement I understand the importance of words. Calling an unborn child a fetus, while medically accurate, can depersonalize the child, allowing members of the public to rationalize abortion in the same way that calling certain members of society "useless eaters," "vermin," and "life unworthy of life" eventually depersonalized entire classes of people, including the mentally retarded, and sent them to their deaths in the Nazi concentration camps.
My point is this: if an entire class of people, those with three sets of the 21st chromosome, are routinely targeted for destruction—at a scandalous rate of 90 percent—can merely changing the term we use to describe those 10 percent who escape the net increase respect for their human dignity and intrinsic value to society in a meaningful way?
Isn't a more fundamental change required before having a child with Down syndrome goes from being the greatest fear of pregnant women to being widely accepted by society?
When only 10 percent of people pre-natally diagnosed with this disorder make it to birth, not referring to that lucky minority as "mentally retarded" seems like a hollow victory—as if we are rescuing survivors of the death camp, offering them freedom and food, but failing to shut down the gas chambers for the rest of their race. Can any significant respect be ever given to those with Down syndrome when those who call themselves advocates ignore this ignominious irony?
I would prefer that my daughter be called a "retard," a pejorative term I abhor, and know that the abortion of babies with Down syndrome had ceased. It would mean society had dropped the window-dressing in a willingness to offer people with a unique number of chromosomes the dignity they deserve, which is the only way that true respect for these persecuted members of our society can be established. It is only when they live fully integrated lives in society and become an everyday sight that they will win the respect they deserve.
Whenever I travel in certain circles with my 8-year-old daughter Christina, who has Down syndrome, she creates a stir. Heads turn to confirm what people think they saw, and then the light of recognition dawns; "yes, that was a child with Down syndrome." The process doesn't bother me unless the discovery is accompanied by a look of disgust.
I never see that reaction from children; they are merely curious. Once, a couple of preschool brothers ran to their mom after meeting Christina, exclaiming in animated stage whispers, "Mom, we met a little girl who is Chinese; she looks Chinese and doesn't speak English!"
She tried to shush them, with a worried glance at me, and I calmly assured her that I wasn't offended, since the boys were just trying to make sense of her uniqueness. This may be the first time the boys had ever encountered a child with Down syndrome; they are pretty rare in the U.S., after all.
Recently, an American psychiatrist traveled to Ireland, and was puzzled by the fact that he saw many more children with Down syndrome in the population than he was accustomed to seeing at home. He noted that they were integrated into everyday activities, and marveled at how they were casually accepted in everyday life. Upon investigation into this rare phenomenon, he came upon a surprising fact: abortion is illegal in Ireland, so the 90 percent abortion rate that has virtually extinguished people with Down elsewhere is not operating. The Irish don't do a double take for children like Christina. In fact, they are debuting a cartoon on Irish TV whose main character, "Punkie," is a little girl with Down syndrome. It will be included among the ordinary children's programs.
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Saturday, January 15, 2011

Snapshots from the Troubled Life of Jared Loughner - TIME

Snapshots from the Troubled Life of Jared Loughner - TIME

Illustration by Sean McCabe for TIME; Photograph: Pima County Sheriff's Department / AFP / Getty Images
Navigating the cluttered corridors of Jared Loughner's mind will take psychiatrists months or years. We will likely never know all the reasons he took a cab to that Safeway on Jan. 8, paid with a $20 bill, calmly got his change and then killed six people and wounded 14 others.
But snapshots of his life are accumulating from acquaintances and his few friends. (His parents issued a short statement of apology, but they are said to be too distraught to speak about their son.) These snapshots depict a quiet, normal boy who had grown into a man descending steadily into serious mental illness. A partisan, highly nonscientific debate has erupted over whether extreme right-wing rhetoric could have inflamed whatever illness he may have and caused him to target Democratic Representative Gabrielle Giffords. We don't know the answer, but psychological research suggests that political rhetoric could never be the single cause that leads a person with complex mental problems to commit violence.(See pictures from a grieving Tucson.)
Case History
Pinpointing the precise moment a mental illness takes root is guesswork at best. As a young man, Loughner seemed ordinary enough — occasionally withdrawn, as all teens can be, and a little nerdy. He loved music and played the sax well. A classmate who had known him since elementary school, Ashley Buysman, says that when she heard the charges against him, "it just blew my mind."
But a darkness began massing around Loughner sometime after he dropped out of Mountain View High School in Tucson, Ariz., before his senior year. He started drinking a lot, according to Kylie Smith, who had known him since preschool. She lost contact with him between 2006 and 2008 and was stunned by how much he had changed. "He seemed out of it, like he was somewhere else," she says. "I could tell he wasn't just drunk and he wasn't just high."
Was a psychiatric illness beginning? Maybe, but it's difficult to tell, because Loughner had by then used a lot of drugs — not just pot but also hallucinogens like acid, according to Smith. It was at about this time that Loughner did something odd: he worked out for months so he could join the Army. Yet after traveling to the military processing station in Phoenix, he told an Army official that he smoked marijuana excessively — which meant he would never be accepted. The weird part: he actually passed a drug test that day, so he had not been using for at least a couple of weeks.(See photos of the world of Jared Lee Loughner.)
Loughner's behavior became increasingly erratic after the Army incident. Friends say he would occasionally speak in random strings of words. He had run-ins with police over drugs and his vandalization of a street sign. He became paranoid that the government was trying to control him — or everyone. He couldn't keep jobs at Quiznos and an animal shelter because he wouldn't — or could no longer — follow instructions.
When classes began at Pima Community College last year, Loughner's behavior frightened fellow students from Day One. "He had this hysterical kind of laugh, laughing to himself," says Benjamin McGahee, his math professor. He would say nonsensical things about "denying math." Says McGahee: "One lady in the back of the classroom said she was scared for her life, literally."(Comment on this story.)
Such Stuff as Dreams
It seems clear that Loughner was developing a mental illness, but which one? Many signs point to one of the psychotic disorders — delusional disorder, say, or schizophrenia, for which the average age of onset is roughly 20, about when Loughner started showing symptoms. The Diagnostic and Statistical Manual of Mental Disorders includes "substance-induced psychotic disorder," which is also a possibility in Loughner's case.(See six warning signs of whether someone is mentally ill.)
By several accounts, Loughner had become fascinated with lucid dreaming, a dream state you can enter when you're half asleep. You are aware while you're in that state that you're dreaming. Loughner's interest in his lucid dreams is significant, because last year the European Science Foundation reported that lucid dreaming "creates distinct patterns of electrical activity in the brain that have similarities to the patterns made by psychotic conditions." Loughner's drug use could have kept him from falling into deep sleep and encouraged lucid dreaming. The European group said paranoid delusions can occur when lucid dreams are replayed repeatedly after the subject wakes up. Loughner was replaying his lucid dreams in an extensive dream journal, according to his friend Bryce Tierney, who spoke with Mother Jones magazine.


Read more: http://www.time.com/time/magazine/article/0,9171,2042358,00.html#ixzz1B7jkDE1K
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