Navigation Links
How the brain routes traffic for maximum alertness

A new UC Davis study shows how the brain reconfigures its connections to minimize distractions and take best advantage of our knowledge of situations.

"In order to behave efficiently, you want to process relevant sensory information as fast as possible, but relevance is determined by your current situation," said Joy Geng, assistant professor of psychology at the UC Davis Center for Mind and Brain.

For example, a flashing road sign alerts us to traffic merging ahead; or a startled animal might cue you to look out for a hidden predator.

When concentrating on a specific task, it's helpful to reconfigure brain networks so that task-relevant information is processed most efficiently and external distractions are reduced, Geng found.

Geng and co-author Nicholas DiQuattro, a graduate student in psychology, used functional magnetic resonance imaging to study brain activity in volunteers carrying out a simple test. They compared their results to mathematical models to infer connectivity between different areas of the brain. The study appeared in the Dec. 7 issue of the Journal of Neuroscience.

The subjects had to look for a letter "T" in a box and indicate which way it faced by pressing a button. They were also presented with a "distractor": another letter T in a box, but rotated 90 degrees.

The distractor was either similar in appearance to the target, or brightened to be more attention-getting.

Subjects did better in trials with an "attention-getting" distractor than a less obvious one, and lit up specific areas of the brain accordingly.

The new work shows that the brain doesn't always "ramp up" to deal with the situation at hand, Geng said. Instead, it changes how traffic moves through the existing hard-wired network -- rather like changing water flow through a network of pipes or information flow over a computer network -- in order to maximize efficiency.

Contact: Andy Fell
University of California - Davis

Page: 1

Related medicine news :

1. Selectively stopping glutathione sensitizes brain tumors to chemotherapy
2. Could Internet Addiction Disrupt Brains Connections?
3. Alcohol Targets Brain Reward Centers in Heavy Drinkers
4. In the brain, ORMOSIL nanoparticles hold promise as a potential vehicle for drug delivery
5. MIT: How does our brain know what is a face and whats not?
6. Personalized gene therapies may increase survival in brain cancer patients
7. Paranoid or Placid? Scans Show Pots Effect on Brain
8. Novel brain tumor vaccine acts like bloodhound to locate cancer cells
9. MRI Scans Show Brain Changes in Kids With Schizophrenia
10. Songbird brain synapses and glial cells capable of synthesizing estrogen
11. NJIT receives patent today for new shunt to aid brain-injured patients
Post Your Comments:
(Date:6/24/2016)... ... ... Marcy was in a crisis. Her son James, eight, was out of control. Prone to ... , “When something upset him, he couldn’t control his emotions,” remembers Marcy. “If there ... my other children and say he was going to kill them. If we were ...
(Date:6/24/2016)... ... , ... Global law firm Greenberg Traurig, P.A. announced that 20 Florida attorneys ... peers for this recognition are considered among the top 2 percent of lawyers practicing ... members of this year’s Legal Elite Hall of Fame: Miami Shareholders Mark D. ...
(Date:6/24/2016)... ... June 24, 2016 , ... Comfort Keepers® of San ... Society and the Road To Recovery® program to drive cancer patients to and from ... adults to ensure the highest quality of life and ongoing independence. Getting to ...
(Date:6/24/2016)... ... ... People across the U.S. are sharpening their pencils and honing their writing skills ... patients and their families pay tribute to a genetic counselor by nominating him or ... Counselors (NSGC) Annual Education Conference (AEC) this September. , In April, Genome magazine ...
(Date:6/24/2016)... ... June 24, 2016 , ... ... proud to recognize Dr. Barry M. Weintraub as a prominent plastic surgeon and ... women in the world, and the most handsome men, look naturally attractive. Plastic ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 ... CAPR ), a biotechnology company focused on the ... announced that patient enrollment in its ongoing randomized ... has exceeded 50% of its 24-patient target. Capricor ... the third quarter of 2016, and to report ...
(Date:6/23/2016)... , June 23, 2016 , ... Thursday, July 7, 2016 , , , , LOCATION: , ... , , , , EXPERT PANELISTS:  , , , Frost ... Industry Analyst, Christi Bird; Senior Industry Analyst, Divyaa Ravishankar and Unmesh ... The global pharmaceutical industry is witnessing an exceptional era. Several ...
(Date:6/23/2016)... Revolutionary technology includes multi-speaker listening to conquer ... in advanced audiology and hearing aid technology, has today ... world,s first internet connected hearing aid that opens up ...      (Photo: ) , ... , TwinLink™ - the first dual communication ...
Breaking Medicine Technology: