Those of you who are lousy at math may someday be able to boost your skills with the use of a painless method of electrical brain stimulation, British research suggests. In a study published in the Nov. 4 online issue of Current Biology , neuroscientists at Oxford University report that adults with normal math abilities were able to improve their performance on a series of numerical tests with the help of a noninvasive technique known as transcranial direct current stimulation (TDCS). TDCS involves stimulating specific regions of the brain with low-level electrical currents to enhance or reduce the activity of neurons. Over the last decade, the procedure has shown promise at improving brain functioning in stroke victims as well as in people with Parkinson’s disease . But this is the first study to show that TDCS can help healthy individuals do better on math tests. “We were able to enhance math abilities, in a specific fashion, and with remarkable longevity,” said lead author Roi Cohen Kadosh, a cognitive neuroscientist at Oxford’s department of experimental psychology. For the study, Cohen Kadosh and his colleagues studied 15 student volunteers between the ages of 20 and 21. The students were asked to learn a series of artificial numbers (symbols that they had never seen before that they were told represented numbers) while they received either a placebo stimulation or TDCS applied to the parietal lobe, a region situated at the back of the brain that is key to numerical understanding. “As our aim is eventually to help children when they are experiencing learning difficulties with numbers, we wanted the adult subjects to learn new material (the artificial numbers) rather than test them with material that they already know,” Cohen Kadosh explained. His team tested the participants’ ability to automatically process the relationship of the artificial numbers to one another and to map them correctly in space using standard testing methods for numerical competence. The results of the tests showed that the brain stimulation improved the participants’ ability to learn the new numbers, and those that improvements lasted for six months. Control tests showed that the effect was specific to the learned symbols and did not affect other cognitive functions. One American researcher said the findings were encouraging, but a lot more study is needed. “Like many good studies, it opens a raft of fertile questions, including ‘Will this work in children?’ and ‘Is it safe to use in children?’” said Dr. Edwin M. Robertson, associate director of the Berenson-Allen Center for Noninvasive Brain Stimulation at Beth Israel Deaconess Medical Center in Boston. “It is certainly possible that undergoing this procedure will affect brain function in children and so cause either neurological or psychiatric problems in the future, and so good follow-up studies are required to examine this issue,” said Robertson, who is also an assistant professor of neurology at Harvard University Medical School. “The concern is greater for children whose brains are still developing, as opposed to the adult population of volunteers who took part in the current study.” Cohen Kadosh said the next step is to test the technique on people who are among the 20% of the population with moderate to severe numerical disabilities, as well as on those who lose their skill with numbers as a result of stroke or degenerative disease. “Our aim is to try to find a way to enhance cognitive treatment by coupling it with noninvasive and painless brain stimulation,” he said. He acknowledged, however, that the technique may also end up being sought after by zealous parents eager to have their kids improve their math scores. “It’s just like other innovations in the past that have been misused,” said Cohen Kadosh. “The experiments that we are doing have been designed to improve disabilities, but of course it can be used by others to enhance average math performance, and we don’t have any control over that.”

FRESNO, Calif. — The number of veterinarians who work with farm animals is on the decline as many retire and fewer students choose large-animal practice. Officials are worried about the impact on food safety, because large-animal veterinarians serve as inspectors at ranches and slaughterhouses. “They’re basically on the front line when it comes to maintaining a safe food supply, not only in the U.S., but in products we export. Vets diagnose diseases that can be transferred from animals to humans,” says David Kirkpatrick, spokesman for the American Veterinary Medical Association. A recent survey by the association found that only 2% of veterinary school students in 2010 graduating classes said they plan to work mostly with large, non-pet animals. Another 7% studied a mixed curriculum that included all types of animals, but the majority of those respondents lean toward pet care. “We have known for years anecdotally that vets were having a difficult time finding people to work at their practice or selling it when they retire,” Kirkpatrick said. “But now we know how big the problem is and how that will magnify over the years,” he said. QUALITY: Shrinking beef market may mean poorer meat at stores From 1998 to 2009, the number of small animal vets climbed to 47,118 from 30,255, while the number of farm-animal vets dropped to 5,040 from 5,553. And the AVMA found that large-animal vets often earn a lower salary: an average of $57,745 compared with $64,744 for small-animal vets, according to a 2008 survey. The large-animal vet world is graying — half of farm-animal vets are older than 50, and only 4.4% are younger than 30. About a third of veterinarians working at the federal level are eligible to retire in the next three years, according to the U.S. Department of Agriculture . At least six rural counties in California have just one large-animal veterinarian. Stuart Hall, 28, a veterinarian in Visalia, Calif., said a single call can tie him up for four hours — time in which he can’t respond to emergencies. “My worry is always that a farmer is going to try to take care of something themselves,” he said. Hall was born in rural England and educated in London before his interest in working with cows brought him to Tulare County, the nation’s largest dairy producer, five years ago. He and his wife have a blog detailing his life as a farm vet. “I just really like cows. They’re big, old gentle things,” he says. Hall likes working outdoors, the drives through the country and the impact his expertise can have on food operations, he says. But for pre-vet student Justeen Borrecco the decision to pursue a career in pet medicine was easy. She has been shoved, bruised and knocked down by the sheep she feeds every day as a student worker at the on-campus farm at California State University, Fresno. “This is why I want to work with dogs and kitties. I don’t want to deal with anything bigger than me,” the 19-year-old said. On Thursday she pulled on her farm boots, picked up bundles of hay and maneuvered her 130-pound frame around to feed dozens of ewes and lambs. “But it’s still good experience. Anything I learn or help with, like vaccines or bandaging, can apply to other animals,” Borrecco said. The sophomore from Hanford, Calif., said it’s important to get as much hands-on time with animals before applying to vet school. Several schools and states have tried to lure students to large-animal veterinary medicine. At the University of California, Davis, School of Veterinary Medicine, applicants interested in becoming farm-animal vets have an admissions edge. The university has slowly boosted the number of students interested in large-animal medicine to 11 of 127, double the number from four years ago. The vet school has also reached out to high schools in rural areas. More than a dozen states, from Washington to Georgia, offer some type of loan repayment program or other incentives if students pledge to work in a region in need of large-animal vets. Vet students typically finish school with about $134,000 in debt, according to the AVMA. Iowa State’s VSMART program allows students focused on farm animals to reduce by a year the amount of time it takes to get a veterinary medicine degree — a big deal when you’re talking about spending upward of $32,000 a year, Kirkpatrick said. Federal legislators have introduced several bills to help increase the number of farm animal vets, including the Veterinary Services Investment Act, which is aimed at recruitment, helping vets expand their practices and providing financial assistance for students. The bill passed the House in September and is awaiting approval in the Senate. The students who have chosen to work with large animals are committed to their choice. Elizabeth Adam, 26, of Santa Maria, Calif., earned a degree in English and business at Loyola Marymount University , and later worked as a consultant at a law firm — but really dreamed of being a farm doctor. “I was making good money but was miserable,” she said. Adam is now in her second year at Fresno State’s pre-vet program. “This is for me,” she said. “The outdoors and the late night emergency calls and the country — I’m ready for all of that.” Copyright 2010 The Associated Press. All rights reserved. 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WILLIAMSVILLE, New York (AP) — A New York college professor says he was passed over for promotions for being heterosexual and then was fired for complaining. Dr. Csaba Marosan is awaiting a hearing after investigators for the state Division of Human Rights found probable cause to support his claims against Trocaire College in Buffalo. Marosan says his teaching contract was not renewed after he complained that administrators made comments about his Hungarian accent and promoted less qualified employees. He’s since included allegations that gay staffers known as “the Merry Men” were given preferential treatment. The college denies the claims and says Marosan was let go because his medical degree did not meet teaching requirements and there were issues with his teaching style. Copyright 2010 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

ATLANTA (AP) — Dave Ebersbach lost his job as a math teacher this summer, and he spends each day hoping that his poverty-stricken school in Ohio will call up and offer him his position back. He and thousands of other teachers around the country could get their jobs back now that the Senate has approved an emergency stimulus package designed to keep educators and other public employees out of the unemployment line. ANALYSIS: Teacher pension funds are short billions SURVEY: Self-evaluation better than parent, student evaluation, teachers say “My biggest thing is I want to go back to the school I was at for the students,” said Ebersbach, 43, one of 14 math teachers in the Toledo school district to receive notice a few weeks ago that their jobs were cut. “We’re in a high-poverty school and one thing the students need more than anything else is consistency. And they’re not going to get that.” The $26 billion measure passed Thursday is less than was initially proposed by Education Secretary Arne Duncan , but will provide $16 billion to help states balance their Medicaid budgets and $10 billion for grants to school districts to forestall layoffs. Republicans strenuously opposed the measure, denouncing it as yet another federal bailout the government cannot afford and calling it a giveaway to public employee unions. For educators across the country, it’s been a bewildering summer as money to save thousands of jobs stalled in Congress and unions and administrators sparred over ways to rehire laid-off teachers. The result has been what is referred to in education circles as the “yo-yo effect.” School budgets, facing severe reductions in state funding, are cut. Layoffs are made. And some or even all of the teachers are hired back over the summer as officials scramble for money. The money coming from Congress could help fill some of that void. But until districts actually have the money in hand, thousands of teachers must wait in limbo not knowing whether they’ll have jobs when school starts in a few weeks. Data provided by the U.S. Department of Education on how many jobs the bill is expected to fund reads like the medical chart of a battered patient: 16,500 in California. In Texas, 14,500. More than 9,000 in Florida. Some 161,000 education jobs across the country in all. “The Senate amendment will go a long way to protecting these jobs and ensuring that America’s educators are working to educate our way to a better economy,” Duncan said. “It’s the right thing to do for America’s students and America’s teachers.” Throughout the summer, many districts had despaired that Congress would deliver any money, and scrambled to find other ways to bring back the teachers, offering early-retirement incentives and negotiating furlough days. In Iowa, where 1,500 layoffs were announced earlier this year, the Des Moines district has called back all but 30 of the 173 teachers who were laid off. Twyla Woods, the district’s chief of staff, said they opened an early retirement option and hope to have enough attrition overall to bring back the remaining teachers. In Santa Cruz, Calif., 82 teachers were laid-off this spring and rehired again this summer, also largely due to a negotiated retirement incentive that 41 workers opted into. Teachers also agreed to take furlough days. The entry level salary in the district is $40,000. The efforts all saved jobs, but are not considered long-term solutions. In other districts, no solution was reached at all, leaving hundreds unemployed and hoping for federal money. Gretchen Marfisi in Florida was laid off in each of the last two summers, only to be rehired by the Broward County School District. This year she canceled her family vacation and put her life on hold before being called back Thursday. “Why are they firing all of us?” Marfisi said, her voice ringing with frustration. “Besides giving us all more gray hair and wrinkles, there doesn’t seem to be a lot of logic involved.” Marfisi is now preparing to unpack all her boxes of teaching materials once again. “It’s a relief to get a paycheck,” Marfisi said. “It’s just very weird and bizarre emotionally. It just in the process makes you feel like garbage.” Mike Langyel, president of the Milwaukee Teachers’ Education Association, worries about the long-term effects these series of layoffs will have on the teaching career. “We don’t need to turn this into a Wal-Mart employment where you’re in for a while and you’re out,” Langyel said. Teachers say the effect on morale has been overwhelming. “Somebody said to me, ‘Teacher: I thought that was one field that was recession-proof,’” Ebersbach said. “I’m at a 50-50 shot.” Turner reported from Atlanta. Armario reported from Miami. Copyright 2010 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Starting the school day earlier may lead to more car accidents involving teenagers, new research suggests. The study, which looked at schools in two cities in Virginia with different start times, found an association between earlier classes and more crashes among sleep-deprived students. “Teenagers need over nine hours sleep a night, and it looks like a large number of teens don’t get sufficient sleep … part of that relates to the time that high schools begin,” said study author Dr. Robert Vorona, an associate professor of internal medicine in the Division of Sleep Medicine at Eastern Virginia Medical School in Norfolk, Va. The findings were to be presented Wednesday at the annual meeting of the American Academy of Sleep Societies, in San Antonio. “There are data that demonstrate that lack of sleep has negative consequences for teens,” he said. “And some data show that younger drivers are more likely to have crashes when they have inadequate sleep.” The study compared crash rates in 2008 for high school students with widely varying school starting times in Virginia Beach and Chesapeake, two adjacent cities with similar demographics. Virginia Beach’s classes started at 7:20 a.m.; Chesapeake’s began at 8:40 a.m. While the overall accident rate for all drivers was higher in Virginia Beach, the difference between teens in the two cities was stark, Vorona said. Chesapeake had 46.2 crashes for every 1,000 teen drivers, compared to 65.4 per 1,000 teen drivers in Virginia Beach — a 41% difference. The statistics are significant, Vorona said, even though they did not prove a direct relationship between school starting times and roadway safety. “We think the Virginia Beach students may be sleep-deprived,” said Vorona, “and that is perhaps the reason for the increased crashes.” Vorona said that the amount of sleep teens get largely depends on what time they get up in the morning. “They tend to go to bed later no matter what time they get up,” said Vorona. Other research shows teens who start school later get more sleep. He recommended high schools look at starting the day later. Beyond the impact on driving, early start times probably affect other important areas, Vorona said, calling for research on how they affect teenagers’ moods, tardiness and academic performance. “If you think about something like calculus, we’re asking teens to perform complicated mental functions when their minds are probably not fully alert yet,” he said. Dr. Barbara Phillips, of the University of Kentucky College of Medicine, agreed. Teens are “biologically programmed” to get sleepy and wake up later than adults, said Phillips, a professor with the school’s division of pulmonary, critical care and sleep medicine. “They truly can’t help it. They’re just not going to get sleepy at 10 p.m., so it’s hard for them to get the eight to 10 hours of sleep they need to get when they have to catch the 7:30 bus.” Phillips is co-author of a study that compared car crash rates and increased sleep for adolescent drivers in Lexington, Ky., when the school district instituted a later school day in 1998. Data were analyzed from the two years before and after the change. The study found that when teens increased their sleep, crash rates declined 16.5% during a period when teen crash rates throughout the state increased by 7.8%. “Younger, inexperienced drivers don’t fare well with additional handicaps such as impaired alertness caused by having to get up earlier than is natural for them,” said Phillips. She noted that schools often resist starting the school day later because it affects bus schedules, sports and other after-school activities. “Changing high school start times is important and difficult,” she said. “It can’t happen without commitment and work on the part of parents and school officials. Teens are not in a position to set their schedules. We need to help them.” Copyright 2010 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.