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Latest Prefrontal cortex Stories

Synapses In Rat Prefrontal Cortex Increased By Long-term Hormone Treatment
2012-07-09 17:24:21

A new study of aged female rats found that long-term treatment with estrogen and a synthetic progesterone known as MPA increased levels of a protein marker of synapses in the prefrontal cortex, a brain region known to suffer significant losses in aging. The new findings appear to contradict the results of the Women´s Health Initiative, a long-term study begun in 1991 to analyze the effects of hormone therapy on a large sample of healthy postmenopausal women aged 50 to 79. Among other...

2012-06-21 02:20:22

Researchers at the RIKEN Brain Science Institute (BSI) in Japan have uncovered two brain signals in the human prefrontal cortex involved in how humans predict the decisions of other people. Their results suggest that the two signals, each located in distinct prefrontal circuits, strike a balance between expected and observed rewards and choices, enabling humans to predict the actions of people with different values than their own. Every day, humans are faced with situations in which they...

Patience And Self Control Illustrated In Brain Imaging
2012-06-19 09:04:54

Connie K. Ho for redOrbit.com Not taking a piece of chocolate cake is easy during the first ten minutes. However, trying to not take a piece of that same cake after 30 minutes is even more difficult. The reasoning behind this challenge is described in a new research project focused on patience and self-control. Scientists from the University of Iowa (UI) recently revealed that they discovered what the brain looks like when a person loses patience and self control with fMRI images. In...

2012-06-07 09:21:21

Stress may affect brain development in children – altering growth of a specific piece of the brain and abilities associated with it – according to researchers at the University of Wisconsin—Madison. "There has been a lot of work in animals linking both acute and chronic stress to changes in a part of the brain called the prefrontal cortex, which is involved in complex cognitive abilities like holding on to important information for quick recall and use," says Jamie...

2012-05-17 12:51:48

Famous 1848 case of a man who survived a terrible accident has modern parallel Poor Phineas Gage. In 1848, the supervisor for the Rutland and Burlington Railroad in Vermont was using a 13-pound, 3-foot-7-inch rod to pack blasting powder into a rock when he triggered an explosion that drove the rod through his left cheek and out of the top of his head. As reported at the time, the rod was later found, "smeared with blood and brains." Miraculously, Gage lived, becoming the most famous...

Brain Activity May Be Partially Responsible For Drug Use In Teens
2012-04-30 04:38:30

A new imaging study has reportedly discovered a link between diminished activity in part of the brain with the likelihood that a teenager will start smoking, drinking, or abusing drugs. The research, said to be the largest imaging study of the human brain ever conducted, was completed by an international team of scientists including Robert Whelan and Hugh Garavan of the University of Vermont. The researchers looked at nearly 1,900 14-year-old participants, and discovered that many of the...

2012-04-25 22:06:51

Study on smokers' brains may mark dawn of a new age in advertising Advertisers and public health officials may be able to access hidden wisdom in the brain to more effectively sell their products and promote health and safety, UCLA neuroscientists report in the first study to use brain data to predict how large populations will respond to advertisements. Thirty smokers who were trying to quit watched television commercials from three advertising campaigns, which all ended by showing the...

2012-04-20 12:06:54

Breakdown of white-matter pathways affects decision-making as we age If you are an aging baby boomer and you've noticed it's a bit harder to drive to unfamiliar locations or to pick a new brand of olive oil at the supermarket, you can blame it on the white matter in your brain. A brain-mapping study, published in the Apr. 11 issue of The Journal of Neuroscience, has found that people's ability to make decisions in novel situations decreases with age and is associated with a reduction in...

2012-04-18 21:50:34

The willingness of people to punish others who lie, cheat, steal or violate other social norms even when they weren´t harmed and don´t stand to benefit personally, is a distinctly human behavior. There is scant evidence that other animals, even other primates, behave in this “I punish you because you harmed him” fashion. Although this behavior — called third-party punishment — has long been institutionalized in human legal systems and economists have...

2012-04-10 09:01:48

The part of the brain we use when engaging in egalitarian behavior may also be linked to a larger sense of morality, researchers have found. Their conclusions, which offer scientific support for Adam Smith's theories of morality, are based on experimental research published in the latest issue of the Proceedings of the National Academy of Sciences. The study, coming seven months after the start of the Occupy Wall Street Movement, which has been aimed at addressing income inequality, was...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.