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Last updated on April 20, 2014 at 0:02 EDT

Latest Prefrontal cortex Stories

2009-07-23 10:43:09

 Experiencing chronic stress day after day can produce wear and tear on the body physically and mentally, and can have a detrimental effect on learning and emotion. However, acute stress -- a short stressful incident -- may enhance learning and memory.Researchers at the University at Buffalo have shown, in trials using rodents as an animal model, that acute stress can produce a beneficial effect on learning and memory, through the effect of the stress hormone corticosterone (cortisol in...

2009-07-16 13:15:45

Training increases brain processing speed and improves our ability to multitask, new research from Vanderbilt University published in the June 15 issue of Neuron indicates. "We found that a key limitation to efficient multitasking is the speed with which our prefrontal cortex processes information, and that this speed can be drastically increased through training and practice," Paul E. Dux, a former research fellow at Vanderbilt, and now a faculty member at the University of Queensland in...

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2009-07-15 08:35:00

Functional magnetic resonance imaging confirms the influences of peer, parents on self identityAsk middle-school students if they are popular or make friends easily, they likely will depend on social comparisons with their peers for an answer. Such reliance on the perceived opinions of others, or reflected self-appraisals, has long been assumed, but new evidence supporting this claim has now been found in the teen brain.Using functional magnetic resonance imaging (fMRI), researchers looked at...

2009-07-13 16:59:28

A new study of the cognitive processes involved with honesty suggests that truthfulness depends more on absence of temptation than active resistance to temptation.Using neuroimaging, psychologists looked at the brain activity of people given the chance to gain money dishonestly by lying and found that honest people showed no additional neural activity when telling the truth, implying that extra cognitive processes were not necessary to choose honesty. However, those individuals who behaved...

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2009-05-29 08:53:01

Just as our world buzzes with distractions "” from phone calls to e-mails to tweets "” the neurons in our brain are bombarded with messages. Research has shown that when we pay attention, some of these neurons begin firing in unison, like a chorus rising above the noise. Now, a study in the May 29 issue of Science reveals the likely brain center that serves as the conductor of this neural chorus. MIT neuroscientists found that neurons in the prefrontal cortex "” the brain's...

2009-05-28 10:51:44

A new study demonstrates that when faced with a difficult decision, the human brain calls upon multiple neural systems that code for different sorts of behaviors and strategies. The research, published by Cell Press in the May 28th issue of the journal Neuron, provides intriguing insight into the mechanisms that help the human brain rise to the formidable challenge of adaptive decision making in the real world."When faced with a complex decision, many individuals engage in simplifying...

2009-05-28 07:37:28

Your brain activity can reveal how you make big decisions, according to a new study. Researchers at Duke University Medical Center studied the brain as people handled a set of decision making problems and found brain regions associated with rational processing, such as the lateral prefrontal cortex, were most active when participants used a strategy not consistent with traditional rational choices. The findings also strongly argue against the commonly held the notion that there are rational...

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2009-05-12 08:07:31

A new University of British Columbia study finds that our brains are much more active when we daydream than previously thought. The study, published in the Proceedings of the National Academy of Sciences, finds that activity in numerous brain regions increases when our minds wander. It also finds that brain areas associated with complex problem-solving "“ previously thought to go dormant when we daydream "“ are in fact highly active during these episodes. "Mind wandering is...

2009-04-08 09:23:02

Mathematical value intuited without calculation; findings may impact math education Although fractions are thought to be a difficult mathematical concept to learn, the adult brain encodes them automatically without conscious thought, according to new research in the April 8 issue of The Journal of Neuroscience. The study shows that cells in the intraparietal sulcus (IPS) and the prefrontal cortex "” brain regions important for processing whole numbers "” are tuned to respond to...

2009-04-02 10:45:37

This is an innovative view of the neurobiological mechanisms of cognitive control and opens up new lines of researchPsychologists and neurologists invest considerable effort in the study of working memory. In terms of information retention, there is a difference between long-term memory, which is affected in diseases such as Alzheimer, and short-term or working memory, which allows us to make immediate decisions or structure a discourse. This more ephemeral memory is affected in diseases such...