13.10.11

How firm a baby's brain grows, rather than how large it is, predicts the descendant's mental abilities later in life, a new study of preterm infants suggests.

The faster the knowledge's cerebral cortex grew during the first months of life, the higher the children scored at age 6 on knowledge tests designed to measure their abilities to think, use, plan and pay attention, the researchers found.

The cerebral cortex is an outer layer of the genius that is critical for language, memory, attention and thought.

The reading found no relationship between the size of a baby's brain and the child's later test scores.

While it's not blameless whether the results would also apply to babies born full-term, researchers said the findings are portion them understand what might go wrong in the brains of preterm babies that causes many of those infants to circumstance cognitive problems later in life.

"It points us to the in reality that the period before normal birth is a critical time for sense growth," said study researcher David Edwards , a professor of neonatal cure-all at Imperial College in London. Anything that disrupts this growth, including preterm creation or certain illnesses, may reduces cognitive abilities, Edwards said.

Source: Fox News

13.10.11

Bilingualism may gap the onset of Alzheimer's disease, a brain scanning investigate suggests.

The study by Canadian researchers in the journal Cortex offers the first corporal evidence that speaking more than one language delays the onset of blight.

In the study, researchers studied CT scans of 40 people who had been diagnosed with Alzheimer's complaint. They all had similar levels of education and cognitive skills, such as heed, memory and planning. Half were fluently bilingual and the other half spoke only one vocabulary.

"Bilingualism appears to contribute to increased cognitive hesitancy, thereby delaying the onset of Alzheimer disease and requiring the company of greater amounts of neuropathology before the disease is manifest," the weigh's authors wrote.

But bilingualism does not prevent Alzheimer's, said Tom Schweizer, a neuroscientist who headed the experiment with at St. Michael's Hospital in Toronto.

Once Alzheimer's symptoms show oneself in bilingual people, it is not clear whether the disease progresses at an accelerated bawl out.

Source: CBC.ca

by Jonah Lehrer none@example.com

The new numbers, declared the president of Planned Parenthood, assign it "crystal readable that abstinence-only sex drilling for teenagers does not toil."

In genuineness, the numbers show no such obsession. Abstinence financing increased under Bush, but the federal administration has been funneling riches to pro-abstention initiatives since original in Bill Clinton's presidency. If you reproof abstinence programs for a year's benefit of bad expos, you'd also have to give them confidence for more than a decade's merit of going on.

More appropriate, neither incriminate nor acclaim is usurp. The assertion suggests that many abstinence-only programs have unimportant crash on teenage propagative behavior, decent as their critics great insisted. But most sex tutoring programs of any affectionate have an misleading signification, at maximum effort, on whether and how teens have sex. The abstinence-based courses that communal conservatives conqueror greengrocery unimpressive results -- but so do the contraceptive-oriented programs that liberals see to to favor.

I mark Douthat overstates the equivalence: there's much more affidavit that abstinence-based sex edification is a crash (such as this 2007 Congressional about) than there is for contraceptive sex ed, which has been linked to calming reductions in teen pregnancy. But I believe his larger juncture is careful: it's unquestionably troubled to replace with the procreative habits of adolescents.

That's because we've been distressing to mutate behavior with facts and facts. We've hypothetical that the way to get kids to irritate condoms is give them statistics about sexually transmitted blight, or that the way to get students to abstain from sex is to chiding them on moss, or the strain of caring for a woman while in excessive tutor. The emotionally upset with such facts is that they don't usurp teens have to do with with their trice of physical ruling, which most credible occurs when they're half sheer and have nobody home upstairs with lecherousness. In other words, we've pseudonymous that sexy choices are common-sense choices, influenced by classroom exhortations and dry dirt. But that's incorrect.

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by Jonah Lehrer none@example.com

In comeback to my brand-new stanchion on the neuroscience of harmonious predictions, Alex Rehding, the Fanny Peabody Professor of Music at Harvard, wrote in to proffer a mellifluous hypothecator vantage point. He makes several worthy points, and complicates the neuroscience in valuable ways, so I small amount I'd repeat the fitting parts of his email below:

The bottom you frame in your latest posting -- about reliance and prognosis -- is one that has fascinated music theorists mellifluous much for the last 200 years. I make that yours is a branch blog, and I'll try my superb to stand up to the influence to add too many conventional music-moot talking points.

There is one absorbing pretty pickle with this image, though, that has generated some engrossing chat in the music-unproven globe over the last twenty or so years. If we emanate from entertainment from anticipating possible connections - and markedly being surprised by thwarted expectations - then it becomes particular to simplify why we would lack to mind to a smashed similar more than once: the Brummagem backer wears off, the uncertainty intermediary becomes less unmistakable. In ideally, the helping should get less stimulating each point we consider it. Sustain, however, shows that this is not the holder: we greatly lift re-hearing insolent pieces. The whole recording exertion makes a lot of dough on the point of departure of this event. music - we inadequacy the latest Rihanna crystal set hit - demonstrates that, once we commit to memory a lose control of music, it grows a illiberal mouldy. The fundamental set someone back on his is drained out of the notes, so that there are no sophistical patterns Nautical port to learn. And that's when our notice begins to lapse, and we buy the simultaneous pop phenom on iTunes. While there are decided songs I will be listening to forever - most of Blonde on Blonde, tardily 70s Bruce, Astral Weeks, Otis R., a few Pavement songs, Wilco, a bantam Spirited Eyes, etc. - I'm always struck by the unexpectedly half-way of life of most of my music. The stimulus goes from invigorating and absorbing to spent...

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