Brain

Doing the math for how songbirds learn to sing

Scientists studying how songbirds stay on key have developed a statistical explanation for why some things are harder for the brain to learn than others.

"We've built the first mathematical model that uses a bird's previous sensorimotor experience to predict its ability to learn," says Emory biologist Samuel Sober. "We hope it will help us understand the math of learning in other species, including humans."

Sober conducted the research with physiologist Michael Brainard of the University of California, San Francisco.

Pair of proteins gets brain cells into shape

The study conducted by Prof. Frank Bradke's team provides indications on brain development and about the causes of diseases of the nervous system. The results have now been published in "Neuron".

Dragonflies have human-like 'selective attention'

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey.

UGA research offers new targets for stroke treatments

Athens, Ga. – New research from the University of Georgia identifies the mechanisms responsible for regenerating blood vessels in the brain.

Looking for ways to improve outcomes for stroke patients, researchers led by the UGA College of Pharmacy assistant dean for clinical programs Susan Fagan used candesartan, a commonly prescribed medication for lowering blood pressure, to identify specific growth factors in the brain responsible for recovery after a stroke.

The results were published online Dec. 4 in the Journal of Pharmacology and Experimental Therapeutics.

Neuroscience: The extraordinary ease of ordinal series

Familiar categories whose members appear in orderly sequences are processed differently than others in the brain, according to new research published by David Eagleman in the open access journal Frontiers in Neuroscience on December 20th, 2012. The study suggests that ordinal sequences have a strong spatial quality and activate a region of the brain not thought to be directly involved in language acquisition and production.

Young offenders who work, don't attend school may be more antisocial

Many high school students work in addition to going to school, and some argue that employment is good for at-risk youths. But a new study has found that placing juvenile offenders in jobs without ensuring that they attend school may make them more antisocial.

The study, by researchers at the University of Pittsburgh, Temple University, and the University of California, Irvine, appears in the journal Child Development.

Supportive role models, coping lead to better health in poor teens

Low-income teenagers who have supportive role models and engage in adaptive strategies have lower levels of a marker for cardiovascular risk than low-income teens without such resources, according to a new study.

The study, by researchers at Northwestern University and the University of British Columbia, is published in the journal Child Development.

Motivation, study habits -- not IQ -- determine growth in math achievement

It's not how smart students are but how motivated they are and how they study that determines their growth in math achievement. That's the main finding of a new study that appears in the journal Child Development.

The study was conducted by researchers at the University of Munich and the University of Bielefeld.

Toddlers' language skills predict less anger by preschool

Toddlers with more developed language skills are better able to manage frustration and less likely to express anger by the time they're in preschool. That's the conclusion of a new longitudinal study from researchers at the Pennsylvania State University that appears in the journal Child Development.

Inside the head of a dinosaur

An international team of scientists, including PhD student Stephan Lautenschlager and Dr Emily Rayfield of the University of Bristol, found that the senses of smell, hearing and balance were well developed in therizinosaurs and might have affected or benefited from an enlarged forebrain. These findings came as a surprise to the researchers as exceptional sensory abilities would be expected from predatory and not necessarily from plant-eating animals.

Small changes in eating prompts weight loss

Making small easy changes to our eating habits on a consistent basis - 25 days or more per month - can lead to sustainable weight loss, according to research by Professor Brian Wansink in Cornell University's Food and Brand Lab. The challenge is to figure out which changes work for specific individuals and how to stick with changes long enough to make them second nature.

Delusions of gender: Men's insecurities may lead to sexist views of women

He loves her, he loves her not.

A new study led by Joshua Hart, assistant professor of psychology, suggests that men's insecurities about relationships and conflicted views of women as romantic partners and rivals could lead some to adopt sexist attitudes about women.

The study was recently published in Personality and Social Psychology Bulletin, a peer-reviewed journal.

Why our backs can't read braille

Johns Hopkins scientists have created stunning images of the branching patterns of individual sensory nerve cells. Their report, published online in the journal eLife on Dec. 18, details the arrangement of these branches in skin from the backs of mice. The branching patterns define ten distinct groups that, the researchers say, likely correspond to differences in what the nerves do and could hold clues for pain management and other areas of neurological study.

Transplanted neural stem cells slows als onset and progression in mouse models

WORCESTER, MA – Promising new research provides evidence that ALS, amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's disease, may be treatable using neural stem cells.

Alzheimer's disease: Cutting off immune response promises new approach to therapy

The Bonn site of the German Center for Neurodegenerative Diseases (DZNE) and the University of Bonn are leading contributors.