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By Grace Rubenstein, North Dakota’s sparse geography has long made it a natural frontier: Pioneers here pushed the boundaries of westward expansion, then agriculture, and recently domestic oil drilling. Now the state finds itself on the leading edge of a new boom that it never would have chosen: Alzheimer’s disease. Cases are rocketing up across the United States, and especially in North Dakota, which has the country’s second highest death rate from the disease. While Alzheimer’s is the sixth leading cause of death nationally, it already ranks third here. “Everybody knows somebody” affected by the disease, said Kendra Binger, a program manager with the Alzheimer’s Association of Minnesota and North Dakota. As public awareness rises along with the numbers of cases, “it’s hard to ignore anymore.” This makes the state an ideal laboratory to glimpse at the future of Alzheimer’s in America, and to identify strategies that could help the rest of the country cope. The devastating disease has strained families and the state budget. So North Dakota — a place that prides itself on personal independence and financial parsimony — has found new ways to support its residents and a new consensus to spend money on prevention. The state’s primary strategy is to assist family caregivers — the estimated 30,000 North Dakota spouses, siblings, sons, and daughters looking after loved ones with dementia. A half-dozen consultants roam the state to evaluate families’ needs, train caregivers, connect them to services, and offer advice. Studies show the program has helped families keep their loved ones out of nursing homes and save the state money. © 2017 Scientific American,
Link ID: 23508 - Posted: 04.19.2017
by Claire Lehmann and Debra W Soh “Neurosexism,” “populist science,” “neurotrash,” the problem with using terms like these to describe scientific investigations of sex differences is that their use may be interpreted as hostile. “Not fair!” claim the espousers of these terms, who argue that they only ever use such terms for pseudoscience and media distortions, not robust and replicable studies. In a recent op-ed for The Guardian, Cordelia Fine—the author who coined the term “neurosexism”—together with Rebecca Jordan-Young, argue that they have never been prima facie opposed to sex differences research. Their only concern is that of scientific rigour. In 2005, the British philosopher Nicholas Shackel proposed the term “Motte and Bailey Doctrine” for this type of argumentative style. Taking the name of the castle fortification, the “motte” is strong and is built high on an elevated patch of land and is easy to defend. By contrast, the “bailey” is built on lower, more exposed ground, and is much more difficult to defend from attacks. Shackel used this metaphor to describe a common rhetorical trap used by postmodern academics, where a controversial proposition is put forward (a “bailey”) but is then switched for an uncontroversial one (a “motte”) when faced with criticism. In this case, the controversial position that has been proposed by authors such as Fine and Jordan-Young is that the scientific investigation of sex differences reinforce and legitimize harmful and sexist stereotypes about women. The uncontroversial proposition is that their concern is simply one of “[ensuring] the [maximum possible contribution] of neuroimaging research.” © 2017 Quillette
Keyword: Sexual Behavior
Link ID: 23507 - Posted: 04.19.2017
Lauren Frayer Gandelina Damião, 78, is permanently hunched, carrying her sorrow. She lost three children to heroin in the 1990s. A quarter century ago, her cobblestone lane, up a grassy hill from Lisbon's Tagus River, was littered with syringes. She recalls having to search for her teenagers in graffitied stone buildings nearby, where they would shoot up. "It was a huge blow," Damião says, pointing to framed photos on her wall of Paulo, Miguel and Liliana. "I was a good mother. I never gave them money for drugs. But I couldn't save them." For much of the 20th century, Portugal was a closed, Catholic society, with a military dictator and no drug education. In the early 1970s, young Portuguese men were drafted to fight wars in the country's African colonies, where many were exposed to drugs for the first time. Some came home addicted. In 1974, there was a revolution — and an explosion of freedom. "It was a little bit like the Americans in Vietnam. Whiskey was cheaper than water, and cannabis was easy to access. So people came home from war with some [drug] habits," says João Goulão, Portugal's drug czar. "Suddenly everything was different [after the revolution]. Freedom! And drugs were something that came with that freedom. But we were completely naive." By the 1990s, 1 percent of Portugal's population was hooked on heroin. It was one of the worst drug epidemics in the world, and it prompted Portugal's government to take a novel approach: It decriminalized all drugs. Starting in 2001, possession or use of any drug — even heroin — has been treated as a health issue, not a crime. © 2017 npr
Keyword: Drug Abuse
Link ID: 23506 - Posted: 04.19.2017
By CLYDE HABERMAN In America’s most storied political family, Rosemary Kennedy was the first in her generation to die of natural causes. Before then, a brother had been killed in war, a sister in a plane crash and two other brothers in assassinations. Not much of Ms. Kennedy’s life qualified as natural, though. Intellectually challenged from birth, she became increasingly erratic after entering womanhood. Her tempestuous mood swings troubled the family patriarch so much that he approved controversial surgery, which he was led to believe would calm her. In 1941, at age 23, Ms. Kennedy underwent a prefrontal lobotomy. It went badly. For her remaining 63 years, she led an institutionalized existence, out of public view, unable to speak clearly or walk without a limp. Retro Report, a series of video documentaries exploring major news stories of the past, harks back to that botched lobotomy and the neurologist who effectively sealed the young woman’s fate, Dr. Walter J. Freeman. The purpose is to show how the past informs the present. Psychosurgery endures, as with a procedure called a cingulotomy, which is used to treat depression and obsessive-compulsive disorder and involves severing fibers deep in the frontal lobe. But attention these days is keenly focused on stimulating discrete areas of the brain with electrical charges in the hope of easing torments like Parkinson’s disease, O.C.D. and depression. “What Walter Freeman was doing was crude and barbaric and harmful in many cases,” said Jack El-Hai, who wrote a 2005 biography of him, “The Lobotomist: A Maverick Medical Genius and His Tragic Quest to Rid the World of Mental Illness.” Referring to cingulotomies, Mr. El-Hai told Retro Report, “But what does remain is the idea that the brain can be physically manipulated, surgically manipulated, to help treat psychiatric illnesses.” The New York Times Company
Link ID: 23505 - Posted: 04.18.2017
By Elizabeth Pennisi By standing on the shoulders of giants, humans have built the sophisticated high-tech world we live in today. Tapping into the knowledge of previous generations—and those around us—was long thought to be a “humans-only” trait. But homing pigeons can also build collective knowledge banks, behavioral biologists have discovered, at least when it comes to finding their way back to the roost. Like humans, the birds work together and pass on information that lets them get better and better at solving problems. “It is a really exciting development in this field,” says Christine Caldwell, a psychologist at the University of Stirling in the United Kingdom who was not involved with the work. Researchers have admired pigeon intelligence for decades. Previous work has shown the birds are capable of everything from symbolic communication to rudimentary math. They also use a wide range of cues to find their way home, including smell, sight, sound, and magnetism. On its own, a pigeon released multiple times from the same place will even modify its navigation over time for a more optimal route home. The birds also learn specific routes from one another. Because flocks of pigeons tend to take more direct flights home than individuals, scientists have long thought some sort of “collective intelligence” is at work. © 2017 American Association for the Advancement of Science
Angelo Young Billionaire magnate Elon Musk is trying to fill the world with electric cars and solar panels while at the same time aiming to deploy reusable rockets to eventually colonize Mars. As if that weren’t enough for his plate, Musk recently announced the launch of Neuralink, a neuroscience startup seeking to create a way to interface human brains with computers. According to him, this would be part of guarding humanity against what Musk considers a threat from the rise of artificial intelligence. He envisions a lattice of electrodes implanted into the human skull that could allow people to download and upload thoughts as well as treat brain conditions such as epilepsy or bipolar disorders. Musk’s proposition seems as outlandish and unlikely as his vision for the Hyperloop rapid transport system, but like his other big ideas, there’s real science behind it. Figuring out what’s really involved in efforts to sync brains with computers was part of what inspired Adam Piore to write “The Body Builders: Inside the Science of the Engineered Human,” which was released last month by HarperCollins. Written in plain language that gives nonscientists a way to separate the science from the sensational, “The Body Builders” is a fascinating dive into what’s happening right now in bioengineering research — from brain-computer interfaces to bionic limbs — that will redefine human-machine interactions in the years to come. Piore, an award-winning journalist who has written extensively about scientific advances, spoke to Salon recently about just how close we are to being able to read one another’s thoughts through electrodes and the processing power of modern computers. © 2017 Salon Media Group, Inc.
By TIM REQUARTH SAN FRANCISCO — On a cloudy afternoon in the Bayview district, Shaquille, 21, was riding in his sister’s 1991 Acura when another car ran a stop sign, narrowly missing them. Both cars screeched to a halt, and Shaquille and the other driver got out. “I just wanted to talk,” he recalls. But the talk became an argument, and the argument ended when Shaquille sent the other driver to the pavement with a left hook. Later that day, he was arrested and charged with felony assault. He already had a misdemeanor assault conviction — for a fight in a laundromat when he was 19. This time he might land in prison. Instead, Shaquille — who spoke on condition that his full name not be used, lest his record jeopardize his chances of finding a job — wound up in San Francisco’s Young Adult Court, which offered him an alternative. For about a year, he would go to the court weekly to check in with Judge Bruce E. Chan. Court administrators would coordinate employment, housing and education support for him. He would attend weekly therapy sessions and life-skills classes. In return, he would avoid trial and, on successful completion of the program, the felony charge would be reduced to a misdemeanor. This was important, because a felony record would make it nearly impossible for him to get a job. “These are transitional-age youth,” said Carole McKindley-Alvarez, who oversees case management for the court. “They’re supposed to make some kind of screwed-up choices. We all did. That’s how you learn.” © 2017 The New York Times Company
Keyword: Development of the Brain
Link ID: 23502 - Posted: 04.18.2017
By Neuroskeptic In a thought-provoking new paper called What are neural correlates neural correlates of?, NYU sociologist Gabriel Abend argues that neuroscientists need to pay more attention to philosophy, social science, and the humanities. Abend’s main argument is that if we are to study the neural correlates or neural basis of a certain phenomenon, we must first define that phenomenon and know how to identify instances of it. Sometimes, this identification is straightforward: in a study of brain responses to the taste of sugar, say, there is little room for confusion because we all agree what sugar is. However, if a neuroscientist wants to study the neural correlates of, say, love, they will need to decide what love is, and this is something that philosophers and others have been debating for a long time. Abend argues that cognitive neuroscientists “cannot avoid taking sides in philosophical and social science controversies” in studying phenomena, such as love or morality, which have no neutral, universally accepted definition. In choosing a particular set of stimuli in order to experimentally evoke something, neuroscientists are aligning themselves with a certain theory of what that thing is. For example, the field of “moral neuroscience” makes heavy use of a family of hypothetical dilemmas called trolley problems. The classic trolley problem asks us to choose between allowing a runaway trolley to hit and kill five people, or throwing one person in front of the trolley, killing them but saving the other five.
Link ID: 23501 - Posted: 04.18.2017
By Ryan Cross Microscopes reveal miniscule wonders by making things seem bigger. Just imagine what scientists could see if they could also make things bigger. A new strategy to blow brains up does just that. Researchers previously invented a method for injecting a polyacrylate mesh into brain tissue, the same water-absorbing and expanding molecule that makes dirty diapers swell up. Just add water, and the tissue enlarges to 4.5 times its original size. But it wasn’t good enough to see everything. The brain is full of diminutive protrusions called dendritic spines lining the signal receiving end of a neuron. Hundreds to thousands of these nubs help strengthen or weaken an individual dendrite’s connection to other neurons in the brain. The nanoscale size of these spines makes studying them with light microscopes impossible or blurry at best, however. Now, the same group has overcome this barrier in an improved method called iterative expansion microscopy, described today in Nature Methods. Here, the tissue is expanded once, the crosslinked mesh is cleaved, and then the tissue is expanded again, resulting in roughly 20-fold enlargement. Neurons are then visualized by light-emitting molecules linked to antibodies which latch onto specified proteins. The technique has yielded detailed images showing the formation of proteins along synapses in mice, as well as detailed renderings of dendritic spines (seen in the image above) in the mouse hippocampus—a center or learning and memory in the brain. The advance could enable neuroscientists to map the many individual connections between neurons across the brain and the unique arrangement of receptors that turn brain circuits on and off. © 2017 American Association for the Advancement of Science
Keyword: Brain imaging
Link ID: 23500 - Posted: 04.18.2017
By John Horgan I’m writing a book on the mind-body problem, and one theme is that mind-theorists’ views are shaped by emotionally traumatic experiences, like mental illness, the death of a child and the breakup of a marriage. David Chalmers is a striking counter-example. He seems remarkably well adjusted and rational, especially for a philosopher. I’ve tracked his career since I heard him call consciousness “the hard problem” in 1994. Although I often disagree with him—about, for example, whether information theory can help solve consciousness—I’ve always found him an admirably clear thinker, who doesn’t oversell his ideas (unlike Daniel Dennett when he insists that consciousness is an “illusion”). Just in the last couple of years, Chalmers's writings, talks and meetings have helped me understand integrated information theory, Bayesian brains, ethical implications of artificial intelligence and philosophy’s lack of progress, among other topics. Last year I interviewed Chalmers at his home in a woody suburb of New York City. My major takeaway: Although he has faith that consciousness can be scientifically solved, Chalmers doesn’t think we’re close to a final theory, and if we find such a theory, consciousness might remain as philosophically confusing as, say, quantum mechanics. In other words, Chalmers is a philosophical hybrid, who fuses optimism with mysterianism, the position that consciousness is intractable. Below are edited excerpts from our conversation. Chalmers, now 50, was born and raised in Australia. His parents split up when he was five. “My father is a medical researcher, a pretty successful scientist and administrator in medicine in Australia… My mother is I would say a spiritual thinker.” “So if you want an historical story, I guess I end up halfway between my father and mother… My father is a reductionist, and my mother is very much a non-reductionist. I’m a non-reductionist with a tolerance for ideas that might look a bit crazy to some people, like the idea that there’s consciousness everywhere, consciousness is not reducible to something physical. That said, the tradition I’m working in is very much in the western scientific and analytic tradition.” © 2017 Scientific American
Link ID: 23499 - Posted: 04.17.2017
Richard A. Friedman I was doing KenKen, a math puzzle, on a plane recently when a fellow passenger asked why I bothered. I said I did it for the beauty. O.K., I’ll admit it’s a silly game: You have to make the numbers within the grid obey certain mathematical constraints, and when they do, all the pieces fit nicely together and you get this rush of harmony and order. Still, it makes me wonder what it is about mathematical thinking that is so elegant and aesthetically appealing. Is it the internal logic? The unique mix of simplicity and explanatory power? Or perhaps just its pure intellectual beauty? I’ve loved math since I was a kid because it felt like a big game and because it seemed like the laziest thing you could do mentally. After all, how many facts do you need to remember to do math? Later in college, I got excited by physics, which I guess you could say is just a grand exercise in applying math to understand the universe. My roommate, a brainy math major, used to bait me, saying that I never really understood the math I was using. I would counter that he never understood what on Earth the math he studied was good for. We were both right, but he’d be happy to know that I’ve come around to his side: Math is beautiful on a purely abstract level, quite apart from its ability to explain the world. We all know that art, music and nature are beautiful. They command the senses and incite emotion. Their impact is swift and visceral. How can a mathematical idea inspire the same feelings? Well, for one thing, there is something very appealing about the notion of universal truth — especially at a time when people entertain the absurd idea of alternative facts. The Pythagorean theorem still holds, and pi is a transcendental number that will describe all perfect circles for all time. © 2017 The New York Times Company
Keyword: Brain imaging
Link ID: 23498 - Posted: 04.17.2017
Emily Corwin Michael Treadwell sat at the back of a courtroom in New Hampshire. He wore a windbreaker and khaki pants and leaned over his work boots with his elbows on his knees. At first it looked like he was chewing gum — a bold choice in a courtroom. But when he spoke it was clear: He wasn't chewing gum, he was chewing his own gums. Michael doesn't have any teeth. Taxpayers in Hillsborough County, N.H., have spent $63,000 over the last six years keeping Treadwell in jail for little more than trespassing. Law Investigation Into Private Prisons Reveals Crowding, Under-Staffing And Inmate Deaths For years now, his life has looked like this: Trespass in an apartment building, spend 30 days in jail; bother restaurant customers, spend 42 days in jail; panhandle aggressively, spend 30 days in jail. "When you live in a town like Nashua, there's not a lot of homelessness there, and it kinda like focuses, puts you in the spotlight," Treadwell says. "Especially if you drink alcohol and stuff." His charges all come from some combination of being homeless and getting drunk. Still, he says, jail is no worse than the streets. "People kill homeless people, violence and everything else," Treadwell says. "It can be a very dangerous life to live in. I don't suggest jail as an alternative. Ain't no kinda life." © 2017 npr
Link ID: 23497 - Posted: 04.17.2017
By Jia Naqvi The rate of stroke among young people has apparently been rising steadily since 1995, according to a study published this week. Hospitalization rates for stroke increased for women between the ages of 18 and 44, and nearly doubled for men in that age range from 1995 through 2012. Using more-detailed data for 2003 through 2012, the researchers found that rates of hospitalizations for acute ischemic stroke increased by nearly 42 percent for men 35 to 44, while rates for women of the same age group increased by 30 percent over the same time, the study published in the JAMA, the Journal of the American Medical Association. Across all adults, including those in older age ranges, stroke was the fifth leading cause of death in 2013. Overall mortality rates from strokes have significantly decreased over the past 50 years due to multiple factors, including better treatment for hypertension and increased use of aspirin, even as incidence of acute ischemic stroke among young adults has been on the rise. The study also looked at stroke risk factors and whether there were any changes in their prevalence from 2003 to 2012. The likelihood of having three or more of five common risk factors — diabetes, hypertension, lipid disorders, obesity and tobacco use — doubled in men and women hospitalized for acute ischemic strokes. © 1996-2017 The Washington Post=
By David Noonan Like many people with epilepsy, Richard Shane, 56, has some problems with memory. But he can easily recall his first seizure, 34 years ago. “I was on the phone with my father, and I noticed that I started moaning, and I lost some level of consciousness,” Shane says. After experiencing a similar episode three weeks later, he went to a doctor and learned he had epilepsy, a neurological disorder caused by abnormal electrical activity in the brain. The first medication he was prescribed, Dilantin (phenytoin), failed to stop or even reduce his seizures. So did the second and the third. His epilepsy, it turned out, was drug-resistant. Over the next 22 years Shane suffered two to five or more seizures a week. He and his doctors tried every new antiseizure drug that came along, but none worked. Finally, in 2004, as a last resort, a neurosurgeon removed a small part of Shane's brain where his seizures originated. “It was a matter of what sucks less,” Shane says, “having brain surgery or having epilepsy.” Shane has been seizure-free ever since. As many as three million people in the U.S. live with epilepsy, and more than 30 percent of them receive inadequate relief from medication, a number that persists despite the introduction of more than a dozen new antiepileptic drugs since 1990. Although surgery has helped some patients such as Shane, uncontrollable epilepsy remains a living nightmare for patients and an intractable foe for clinicians and researchers. “I hate to say it, but we do not know why” some people respond to medications and others do not, says neurologist Michael Rogawski, who studies epilepsy treatments at the University of California, Davis. And yet if the central conundrum continues, so does the determined quest for new and different approaches to treating the toughest cases. © 2017 Scientific American
Link ID: 23495 - Posted: 04.15.2017
By Andy Coghlan It tastes foul and makes people vomit. But ayahuasca, a hallucinogenic concoction that has been drunk in South America for centuries in religious rituals, may help people with depression that is resistant to antidepressants. Tourists are increasingly trying ayahuasca during holidays to countries such as Brazil and Peru, where the psychedelic drug is legal. Now the world’s first randomised clinical trial of ayahuasca for treating depression has found that it can rapidly improve mood. The trial, which took place in Brazil, involved administering a single dose to 14 people with treatment-resistant depression, while 15 people with the same condition received a placebo drink. A week later, those given ayahuasca showed dramatic improvements, with their mood shifting from severe to mild on a standard scale of depression. “The main evidence is that the antidepressant effect of ayahuasca is superior to the placebo effect,” says Dráulio de Araújo of the Brain Institute at the Federal University of Rio Grande do Norte in Natal, who led the trial. Shamans traditionally prepare the bitter, deep-brown brew of ayahuasca using two plants native to South America. The first, Psychotria viridis, is packed with the mind-altering compound dimetheyltryptamine (DMT). The second, the ayahuasca vine (Banisteriopsis caapi), contains substances that stop DMT from being broken down before it crosses the gut and reaches the brain. © Copyright Reed Business Information Ltd.
Sarah Boseley in Amsterdam The city of Amsterdam is leading the world in ending the obesity epidemic, thanks to a radical and wide-reaching programme which is getting results even among the poorest communities that are hardest to reach. Better known for tulips and bicycles, Amsterdam has the highest rate of obesity in the Netherlands, with a fifth of its children overweight and at risk of future health problems. The programme appears to be succeeding by hitting multiple targets at the same time – from promoting tap water to after-school activities to the city refusing sponsorship to events that take money from Coca Cola or McDonalds. It is led by a dynamic deputy mayor with the unanimous backing of the city’s politicians. From 2012 to 2015, the number of overweight and obese children has dropped by 12%. Even more impressive, Amsterdam has done what nobody else has managed, because the biggest fall has been amongst the lowest socio-economic groups. It is in neighbourhoods like the Bijlmer in the south-east that the programme is changing lives. The Bijlmer is notorious, says Wilbert Sawat, coordinator and PE teacher at De Achtsprong primary school, and that’s why he wanted to work there. Other teachers do too, he says. “Here we can make a difference.
Link ID: 23493 - Posted: 04.15.2017
Laurel Hamers Earth’s magnetic field helps eels go with the flow. The Gulf Stream fast-tracks young European eels from their birthplace in the Sargasso Sea to the European rivers where they grow up. Eels can sense changes in Earth’s magnetic field to find those highways in a featureless expanse of ocean — even if it means swimming away from their ultimate destination at first, researchers report in the April 13 Current Biology. European eels (Anguilla anguilla) mate and lay eggs in the salty waters of the Sargasso Sea, a seaweed-rich region in the North Atlantic Ocean. But the fish spend most of their adult lives living in freshwater rivers and estuaries in Europe and North Africa. Exactly how eels make their journey from seawater to freshwater has baffled scientists for more than a century, says Nathan Putman, a biologist with the National Oceanic and Atmospheric Administration in Miami. The critters are hard to track. “They’re elusive,” says study coauthor Lewis Naisbett-Jones, a biologist now at the University of North Carolina at Chapel Hill. “They migrate at night and at depth. The only reason we know they spawn in the Sargasso Sea is because that’s where the smallest larvae have been collected.” |© Society for Science & the Public 2000 - 2017.
Keyword: Animal Migration
Link ID: 23492 - Posted: 04.14.2017
By James Gallagher Health and science reporter, BBC News website Toddlers who spend time playing on smartphones and tablets seem to get slightly less sleep than those who do not, say researchers. The study in Scientific Reports suggests every hour spent using a touchscreen each day was linked to 15 minutes less sleep. However, those playing with touchscreens do develop their fine motor skills more quickly. Experts said the study was "timely" but parents should not lose sleep over it. There has been an explosion in touchscreens in the home, but understanding their impact on early childhood development has been lacking. The study by Birkbeck, University of London, questioned 715 parents of children under three years old. It asked how often their child played with a smartphone or tablet and about the child's sleep patterns. It showed that 75% of the toddlers used a touchscreen on a daily basis, with 51% of those between six and 11 months using one, and 92% of those between 25 and 36 months doing so as well. But children who did play with touchscreens slept less at night and more in the day. Overall they had around 15 minutes less sleep for every hour of touchscreen use. Not before bedtime? Dr Tim Smith, one of the researchers, told the BBC News website: "It isn't a massive amount when you're sleeping 10-12 hours a day in total, but every minute matters in young development because of the benefits of sleep." © 2017 BBC.
Link ID: 23491 - Posted: 04.14.2017
By CATHERINE SAINT LOUIS Halfway through February, I could no longer sleep through the night. At 2 a.m., I’d find myself chugging milk from the carton to extinguish a fire at the top of my rib cage. The gnawing feeling high in my stomach alternated with nausea so arresting I kept a bucket next to my laptop and considered taking a pregnancy test, even though I was 99 percent sure I wasn’t expecting. One day on the subway platform, I doubled over and let out a groan so pathetic it prompted a complete stranger to ask, “Are you all right?” Then I knew it was time to seek medical attention. New Yorkers don’t address strangers on the subway, I told myself. It’s like breaking the fourth wall. The next day, my primary care doctor told me I probably had an ulcer, a raw spot or sore in the lining of the stomach or small intestine. Here are some of the things I learned about ulcers during the odyssey that followed. ■ Anyone Can Get an Ulcer. Back in the 1980s, when doctors and most everyone else thought psychological stress or spicy foods led to ulcers, two Australian scientists discovered that the main culprit was actually a bacterium called Helicobacter pylori. That discovery eventually won them a Nobel Prize in 2005, and ushered in an era of using antibiotics to cure ulcers. But that didn’t wipe out ulcers altogether. Far from it. Indeed, my tribe of fellow sufferers are legion. Nearly 16 million adults nationwide reported having an ulcer in 2014,according to the Centers for Disease Control and Prevention’s National Center for Health Statistics. The largest group, roughly 6.2 million, were 45 to 64 years old. Those 18 to 44 accounted for 4.6 million, 65- to 74-year-olds for 2.6 million, and those 75 and older for 2.4 million. I got a blood test to see if I was infected with H. pylori; the test came back negative, so I didn’t need antibiotics. Regular use of nonsteroidal anti-inflammatory drugs, like ibuprofen or aspirin, can also lead to an ulcer, but I wasn’t taking those medicines. My ulcer turned out to be “idiopathic,” which is a fancy way of saying that doctors have no idea why it happened. © 2017 The New York Times Company
Link ID: 23490 - Posted: 04.14.2017
By Pascal Wallisch One of psychologist Robert Zajonc’s lasting contributions to science is the “mere exposure effect,” or the observation that people tend to like things if they are exposed to them more often. Much of advertising is based on this notion. But it was sorely tested in late February 2015, when “the dress” broke the internet. Within days, most people were utterly sick of seeing or talking about it. I can only assume that now, two years later, you have very limited interest in being here. (Thank you for being here.) But the phenomenon continues to be utterly fascinating to vision scientists like me, and for good reason. The very existence of “the dress” challenged our entire understanding of color vision. Up until early 2015, a close reading of the literature could suggest that the entire field had gone somewhat stale—we thought we basically knew how color vision worked, more or less. The dress upended that idea. No one had any idea why some people see “the dress” differently than others—we arguably still don’t fully understand it. It was like discovering a new continent. Plus, the stimulus first arose in the wild (in England, no less), making it all the more impressive. (Most other stimuli used by vision science are generally created in labs.) Even outside of vision scientists, most people just assume everyone sees the world in the same way. Which is why it’s awkward when disagreements arise—it suggests one party either is ignorant, is malicious, has an agenda, or is crazy. We believe what we see with our own eyes more than almost anything else, which may explain the feuds that occurred when “the dress” first struck and science lacked a clear explanation for what was happening.
Link ID: 23489 - Posted: 04.14.2017