Navigation Links
Clues to 'Slacker' Behavior Found in Brain, Study Says
Date:5/2/2012

WEDNESDAY, May 2 (HealthDay News) -- Chemistry in three areas of the brain may influence your motivation levels, a new, small study says.

Along with providing new information about how the brain works, this study could prove important in finding ways to treat depression, schizophrenia, attention-deficit disorder and other types of mental illness linked with decreased motivation, Vanderbilt University researchers said.

The researchers monitored brain activity in 25 volunteers, aged 18 to 29, as they performed a task designed to assess their willingness to work for a cash reward.

The results showed that "go-getters" who were willing to work hard for a reward had higher release of the neurotransmitter dopamine in areas of the brain known to play an important role in reward and motivation -- the striatum and ventromedial prefrontal cortex.

But "slackers" -- those who were less willing to work hard for a reward -- had higher levels of dopamine in a brain area involved in emotion and risk perception, known as the anterior insula. Dopamine's role in this area of the brain surprised the researchers.

"Past studies in rats have shown that dopamine is crucial for reward motivation, but this study provides new information about how dopamine determines individual differences in the behavior of human reward-seekers," study author Michael Treadway, a post-doctoral student, said in a university news release.

The study appears in the May 2 issue of the Journal of Neuroscience.

"At this point, we don't have any data proving that this 20-minute snippet of behavior corresponds to an individual's long-term achievement, but if it does measure a trait variable such as an individual's willingness to expend effort to obtain long-term goals, it will be extremely valuable," co-author David Zald, a professor of psychology, said in the news release.

Further research is needed to determine whether differences in dopamine levels play a role in the lower levels of motivation seen in people with certain types of mental illness.

"Right now our diagnoses for these disorders is often fuzzy and based on subjective self-report of symptoms," Zald said. "Imagine how valuable it would be if we had an objective test that could tell whether a patient was suffering from a deficit or abnormality in an underlying neural system. With objective measures we could treat the underlying conditions instead of the symptoms."

More information

The U.S. National Institute of Mental Health has more about depression.

-- Robert Preidt

SOURCE: Vanderbilt University, news release, May 1, 2012


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Tiny fruit fly could offer big clues in fight against obesity, researcher says
2. Chickens May Provide Clues to Color Vision
3. New clues found linking larger animals to colder climates
4. New Clues to Lupus Link With Heart Disease
5. Blood Gives Clues to Executive Thinking Problems
6. Clues to pregnancy-associated breast cancer found
7. Clues Found to How Different Flu Vaccines Work
8. New Clues to Pregnancy-Associated Breast Cancer
9. Scientists Find Clues to How the Body Fights Off HIV
10. More Clues Emerge on How HIV Infects Women
11. Lab that probes genetic clues to disease is poised for major expansion
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Clues to 'Slacker'  Behavior Found in Brain, Study Says
(Date:10/13/2017)... ... October 13, 2017 , ... Dickinson Insurance and ... and financial preparation services, is providing an update on a charitable event that ... City Rescue is a locally recognized nonprofit that provides shelter and care for ...
(Date:10/13/2017)... ... , ... The American Board of Family Medicine's (ABFM) Board of Directors has ... succeeding Dr. James C. Puffer upon his retirement. Dr. Newton will serve in the ... at the end of 2018. Upon assuming the role of President and CEO on ...
(Date:10/13/2017)... ... October 13, 2017 , ... Southern ... and Jennifer Huggins, PharmD ’17, along with clinical associate professor Janice Frueh, ... cardiovascular diseases during the 15th Annual Women’s Health Conference. The SIU School ...
(Date:10/13/2017)... ... October 13, 2017 , ... Many families have long-term insurance that covers ... companies have a waiver for care if the client has a cognitive impairment diagnosis. ... pays for care, is often waived, so the benefits from their insurance start immediately,” ...
(Date:10/13/2017)... ... October 13, 2017 , ... Global Healthcare Management’s 4th Annual Kids ... Milford, NJ. This free event, sponsored by Global Healthcare Management’s CEO, Jon Letko, ... run is geared towards children of all ages; it is a non-competitive, non-timed event, ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... 2, 2017 The Rebound mobile app is poised ... reverse the tide of prescription drug addiction. The app empowers ... intake and stepping down their dosage in a safe, controlled ... December 2017; the first 100,000 people to sign up will ... http://www.rebound-solution.com/ ...
(Date:9/25/2017)... 25, 2017   Montrium , an industry ... today—from the IQPC Trial Master Files & Inspection ... that EastHORN Clinical Services has selected eTMF ... TMF management. EastHORN, a leading European contract research ... increase transparency to enable greater collaboration with sponsors, ...
(Date:9/19/2017)... 19, 2017 HistoSonics, Inc., a venture-backed medical device company developing a non-invasive, robotically ... announced three leadership team developments today:   ... ... Tom ... Veteran medical device executive Josh Stopek , PhD, who ...
Breaking Medicine Technology: