Navigation Links
Brain power shortage
Date:7/16/2012

Can you teach an old dog (or human) new tricks? Yes, but it might take time, practice, and hard work before he or she gets it right, according to Hans Schroder and colleagues from Michigan State University in the US. Their work shows that when rules change, our attempts to control our actions are accompanied by a loss of attention to detail. Their work is published online in the Springer journal Cognitive, Affective, & Behavioral Neuroscience.

In order to adapt to changing conditions, humans need to be able to modify their behavior successfully. Overriding the rules we adhere to on a daily basis requires substantial attention and effort, and we do not always get it right the first time. When we switch between two or more tasks, we are slower and more likely to commit errors, which suggests switching tasks is a costly process. This may explain why it is so hard to learn from our mistakes when rules change.

The authors explain: "Switching the rules we use to perform a task makes us less aware of our mistakes. We therefore have a harder time learning from them. That's because switching tasks is mentally taxing and costly, which leads us to pay less attention to the detail and therefore make more mistakes."

A total of 67 undergraduates took part in the study. They were asked to wear a cap, which recorded electrical activity in the brain. They then performed a computer task that is easy to make mistakes on. Specifically, the participants were shown letter strings like "MMMMM" or "NNMNN" and were told to follow a simple rule: if 'M' is in the middle, press the left button; if 'N' is in the middle, press the right button. After they had followed this rule for almost 50 trials, they were instructed to perform the same task, but with the rules reversed i.e. now if 'M' is in the middle, press the right button; and if 'N' is in the middle, press the left button.

When the rules were reversed, participants made more consecutive errors. They were more likely to get it wrong twice in a row. This showed they were less apt to bounce back and learn from their mistakes. Reversing the rules also produced greater control-related and less error-awareness brain activity.

These results suggest that when rules are reversed, our brain works harder to juggle the two rules - the new rule and the old rule - and stay focused on the new rule. When we spend brain energy juggling these two rules, we have less brain power available for recognizing our mistakes.


'/>"/>

Contact: Joan Robinson
joan.robinson@springer.com
49-622-148-78130
Springer
Source:Eurekalert

Related medicine news :

1. Exercise Can Shield the Aging Brain, Studies Show
2. Mayo Clinic creates tool to track real-time chemical changes in brain
3. The Ben & Catherine Ivy Foundation contributes $10 million to TGen for brain cancer research
4. Brain Scans Using New Dye May Predict Alzheimers
5. Strong communication between brain and muscle requires both having the protein LRP4
6. Better treatment for brain cancer revealed by new molecular insights
7. Pediatric tumors traced to stem cells in developing brain​​
8. Electrical brain stimulation can alleviate swallowing disorders after stroke
9. Study of Retired NFL Players Finds Evidence of Brain Damage
10. Study finds new gene mutations that lead to enlarged brain size, cancer, autism, epilepsy
11. Kernicterus Brain Damage in Babies Linked to Medical Malpractice
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/22/2017)... ... 2017 , ... Doctors on Liens is continuing its steady expansion of medical ... practicing at North Valley Eye Medical Group in Mission Hills . Eye injuries ... personal injury cases. These injuries have a major impact on the quality of ...
(Date:2/22/2017)... ... February 22, 2017 , ... ... newest advanced absorption cannabidiol (CBD) serum, “NANOCALM 300” Microemulsified Hemp Extract. This ... instant absorption from the mouth into the bloodstream. Far outpacing the ...
(Date:2/22/2017)... ... February 22, 2017 , ... ... country today, as organizations, advocates, and individuals join together to increase recognition about ... to ultimately save lives. , “Today we mark a nationwide movement to raise ...
(Date:2/22/2017)... ... February 22, 2017 , ... The Centers ... to help small practices in Delaware, New Jersey, Pennsylvania and West Virginia prepare ... Access and CHIP Reauthorization Act of 2015 (MACRA). , This technical assistance, ...
(Date:2/22/2017)... ... 22, 2017 , ... Bellus Medical, a leader in medical ... delivery of Platelet Rich Plasma (PRP). PRP systems are used by physicians in ... synthesis and provide a faster and more efficient healing process. There are many ...
Breaking Medicine News(10 mins):
(Date:2/22/2017)... Research and Markets has announced the addition of ... report to their offering. ... Dermatological conditions are one of the ... the US population suffers from at least one active skin ... market has remained saturated with established and generic products. However, ...
(Date:2/22/2017)... , Feb. 22, 2017   Protein Sciences Corporation ... Flublok® Influenza Vaccine , announced today that they ... Influenza Vaccine Introduction (PIVI) and the Mongolian Ministry of ... of the flu.  The doses of Flublok have been ... Mongolia for health care workers, pregnant women, ...
(Date:2/22/2017)... February 22, 2017 A research report by ... America and the continuously changing landscape of the legal ... in the North America , a 30% increase ... to $21.6 billion by the year 2021 representing a 26 percent ... the United States and Canada ...
Breaking Medicine Technology: