power of the mind: woowoo meets science again

verklingen · 04-13-2009, 09:51 AM

i find stuff like this absolutely fascinating

Quote:

Doctors confirm woman's imaginary third arm
April 1, 2009 - 11:59 AM

A 64-year-old woman has reported to doctors at Geneva University Hospital the presence of a pale, milky-white and translucent third arm.

After examining the case, the woman's neurologist, Asaid Khateb of the hospital's experimental neurophysiology laboratory, called the rare phenomenon credible.

The arm appeared to the woman a few days after suffering a stroke, doctors said.

But this case of what is known as a supernumerary phantom limb (SPL) is a genuine head-scratcher.

The upshot is that the woman can use the apparitional extremity to relieve very real itches on the cheek. It cannot penetrate solid objects.

She does not always perceive the arm but "retrieves" it when needed, doctors told the Swiss news agency.

It is nevertheless the first case known to doctors of a person being able to feel, see and deliberately move a limb that doesn't exist. The findings are published in the Annals of Neurology.

Pinpointing
Khateb and his colleagues examined the patient's brain using functional magnetic resonance imaging (MRI), a tool that allows doctors to see whether the brain is truly stimulated, and to pinpoint where. In this case, the investigations revealed that the woman actually experienced what she described.

Researchers instructed the woman to move her right hand. As expected, the motor cortex and visual processing areas in the left side of her brain became mobilised.

The same effects were observed to a lesser extent when the woman simply imagined moving her right hand. Imaginary movements of the woman's paralysed left hand prompted the same activity in the brain, but on the right side.

But when doctors asked her to move her phantom arm, her brain reacted as though the arm really existed and could be moved. In addition, the patient's visual cortex was also activated, indicating the she actually saw the imaginary limb.

And when she was instructed to scratch her cheek, regions of the brain relating to touch were activated.

Mystery
Khateb said the exact cause of the imaginary arm remains a mystery. Supernumerary limbs are rare. There are only nine known cases of a patient both feeling and seeing an arm.

"Existing evidence from stroke-elicited SPLs convincingly implicates the mismatch between the subject's well-established sensorimotor representations and a suddenly aberrant pattern of communication between the brain and the paralysed limb," the authors wrote.

They said it could represent a missing link between classical phantom limbs and phenomena such as out-of-body experiences.

Phantom limbs are more commonly associated with people who have had an amputation – between 50 and 80 per cent of people who have had body parts removed suffer from it. In most cases it is painful, according to a 1984 article published in a scientific journal called the Clinical Journal of Pain.

"Ultimately however these conditions might offer a unique way to understand how the brain constructs a normal experience of bodily awareness and the self," they concluded.

swissinfo with agencies

A 64-year-old Swiss woman has reported the presence of a pale, milky-white and translucent third arm. - swissinfo

verklingen · 04-14-2009, 03:13 PM

and again!

Quote:

Just Say No to Aging?
A provocative new book from a Harvard psychologist suggests that changing how we think about our age and health can have dramatic physical benefits.
Apr 14, 2009 | Updated: 10:28 a.m. ET Apr 14, 2009

Imagine that you could rewind the clock 20 years. It's 1989. Madonna is topping the pop charts, and TV sets are tuned to "Cheers" and "Murphy Brown." Widespread Internet use is just a pipe dream, and Sugar Ray Leonard and Joe Montana are on recent covers of Sports Illustrated.

But most important, you're 20 years younger. How do you feel? Well, if you're at all like the subjects in a provocative experiment by Harvard psychologist Ellen Langer, you actually feel as if your body clock has been turned back two decades. Langer did a study like this with a group of elderly men some years ago, retrofitting an isolated old New England hotel so that every visible sign said it was 20 years earlier. The men—in their late 70s and early 80s—were told not to reminisce about the past, but to actually act as if they had traveled back in time. The idea was to see if changing the men's mindset about their own age might lead to actual changes in health and fitness.

Langer's findings were stunning: After just one week, the men in the experimental group (compared with controls of the same age) had more joint flexibility, increased dexterity and less arthritis in their hands. Their mental acuity had risen measurably, and they had improved gait and posture. Outsiders who were shown the men's photographs judged them to be significantly younger than the controls. In other words, the aging process had in some measure been reversed.

I know this sounds a bit woo-wooey, but stay with me. Langer and her Harvard colleagues have been running similarly inventive experiments for decades, and the accumulated weight of the evidence is convincing. Her theory, argued in her new book, "Counterclockwis e," is that we are all victims of our own stereotypes about aging and health. We mindlessly accept negative cultural cues about disease and old age, and these cues shape our self-concepts and our behavior. If we can shake loose from the negative clichés that dominate our thinking about health, we can "mindfully" open ourselves to possibilities for more productive lives even into old age.

Consider another of Langer's mindfulness studies, this one using an ordinary optometrist's eye chart. That's the chart with the huge E on top, and descending lines of smaller and smaller letters that eventually become unreadable. Langer and her colleagues wondered: what if we reversed it? The regular chart creates the expectation that at some point you will be unable to read. Would turning the chart upside down reverse that expectation, so that people would expect the letters to become readable? That's exactly what they found. The subjects still couldn't read the tiniest letters, but when they were expecting the letters to get more legible, they were able to read smaller letters than they could have normally. Their expectation—their mindset—improved their actual vision.

That means that some people may be able to change prescriptions if they change the way they think about seeing. But other health consequences might be more important than that. Here's another study, this one using clothing as a trigger for aging stereotypes. Most people try to dress appropriately for their age, so clothing in effect becomes a cue for ingrained attitudes about age. But what if this cue disappeared? Langer decided to study people who routinely wear uniforms as part of their work life, and compare them with people who dress in street clothes. She found that people who wear uniforms missed fewer days owing to illness or injury, had fewer doctors' visits and hospitalizations, and had fewer chronic diseases—even though they all had the same socioeconomic status. That's because they were not constantly reminded of their own aging by their fashion choices. The health differences were even more exaggerated when Langer looked at affluent people: presumably the means to buy even more clothes provides a steady stream of new aging cues, which wealthy people internalize as unhealthy attitudes and expectations.

Langer is not advocating that we all don uniforms. Her point is that we are surrounded every day by subtle signals that aging is an undesirable period of decline. These signals make it difficult to age gracefully. Similar signals also lock all of us—regardless of age—into pigeonholes for disease. We are too quick to accept diagnostic categories like cancer and depression, and let them define us. Doing so preempts the possibility of a healthful future.

That's not to say that we won't encounter illness, bad moods or a stiff back—or that dressing like a teenager will eliminate those things. But with a little mindfulness, we can try to embrace uncertainty and understand that the way we feel today may or may not connect to the way we will feel tomorrow. Who knows, if we're open to the idea that things can improve, we just might wake up feeling 20 years younger.

Herbert writes the blog We're Only Human at We're Only Human....

© 2009

Can We Reverse Aging By Changing How We Think? | Newsweek Voices - Wray Herbert | Newsweek.com

catastrophe · 04-14-2009, 03:18 PM

hmm...
that's kinda neat

**Mafoo** · 04-14-2009, 04:43 PM

i can believe that say no to aging article
sometimes when i think im going to get sick i actualy end up getting sick

Lord X · 04-14-2009, 06:38 PM

I want a third arm! I could multi-task like none other.

SquirrelDog · 04-14-2009, 07:49 PM

Quote:

Originally Posted by Mafoo

i can believe that say no to aging article
sometimes when i think im going to get sick i actualy end up getting sick

Usually, without fail, I can tell when I'm getting sick not from physical symptoms but by the thoughts racing through my mind. All the more reason to think healthy thoughts.

Dozer McDozer · 04-15-2009, 01:27 PM

i was thinkin about the "time flys when you're having fun saying." and it occured to me, if time is indeed relative then if it feels like its been 20 minutes, then i'm only 20 minutes older.

I often consider if everything physical is mental... Something i remember from psychology intro(not sure if it was teacher who said it or book). I think maybe it makes sense of puberty. Although our ideas of what it means to be a man are not all the same(completely opposite even)... and of course kids change mentally due to all the hormones and shit; testosterone ftw. but still i'm reminded of the humanistic way of thinking. i control what i think... i think... i'm sure woman would say differently wouldn't they.

thats nuts though about the third arm. changes everything.

lol my edit took a while and please i honestly mean no disrespects to the womenz but yall know how to chew a guys head off. and you know this.

04-14-2009, 03:18 PM	#3 (permalink)
catastrophe intuēri Join Date: Mar 2005 Location: Minnesotaaa Posts: 1,215 Thanks: 613 Thanked 185 Times in 135 Posts	hmm... that's kinda neat __________________ “Liƒë Is a Drëam, From Which Wë First Must Wakë Bëƒorë Wë May Drëam Again…” RIP Gov “To see a world in a grain of sand, And a heaven in a wild flower, Hold infinity in the palm of your hand, And eternity in an hour.”

04-14-2009, 04:43 PM	#4 (permalink)
Mafoo nice daze Join Date: Nov 2005 Location: the anguish of anticipated transformation Posts: 5,962 Thanks: 3,491 Thanked 2,356 Times in 1,540 Posts	i can believe that say no to aging article sometimes when i think im going to get sick i actualy end up getting sick __________________ PLUR For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return

04-14-2009, 06:38 PM	#5 (permalink)
Lord X YaHookan Join Date: Mar 2008 Location: Planet Earth Posts: 123 Thanks: 8 Thanked 10 Times in 12 Posts	I want a third arm! I could multi-task like none other. __________________ Three Rings for the Elven-kings under the sky, Seven for the Dwarf-lords in their halls of stone, Nine for Mortal Men doomed to die, One for the Dark Lord on his dark throne In the Land of Mordor where the Shadows lie. One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them In the Land of Mordor where the Shadows lie.

04-15-2009, 01:27 PM	#7 (permalink)
Dozer McDozer YaHookan Join Date: Jun 2008 Location: Texas Posts: 772 Thanks: 158 Thanked 86 Times in 77 Posts	i was thinkin about the "time flys when you're having fun saying." and it occured to me, if time is indeed relative then if it feels like its been 20 minutes, then i'm only 20 minutes older. I often consider if everything physical is mental... Something i remember from psychology intro(not sure if it was teacher who said it or book). I think maybe it makes sense of puberty. Although our ideas of what it means to be a man are not all the same(completely opposite even)... and of course kids change mentally due to all the hormones and shit; testosterone ftw. but still i'm reminded of the humanistic way of thinking. i control what i think... i think... i'm sure woman would say differently wouldn't they. thats nuts though about the third arm. changes everything. lol my edit took a while and please i honestly mean no disrespects to the womenz but yall know how to chew a guys head off. and you know this. __________________ Condemnation without investigation is the height of ignorance. - Albert Einstein Properly trained, man can be a dog's best friend - i'll get his name once i get book back Last edited by Dozer McDozer; 04-15-2009 at 01:59 PM.

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