Navigation Links
Sleepiness may impair the brain's inhibitory control when viewing high-calorie foods
Date:6/13/2011

DARIEN, Ill. Daytime sleepiness may affect inhibitory control in the brain when viewing tantalizing, high-calorie foods, suggests a research abstract that will be presented Monday, June 13, in Minneapolis, Minn., at SLEEP 2011, the 25th Anniversary Meeting of the Associated Professional Sleep Societies LLC (APSS).

Results show that greater daytime sleepiness was associated with decreased activation in the prefrontal cortex during visual presentations of enticing, high-calorie food images. The prefrontal cortex is a brain region that plays an important role in inhibitory processing.

"Self-reported daytime sleepiness among healthy, normally rested individuals correlated with reduced responsiveness of inhibitory brain regions when confronted with images of highly appetizing foods," said principal investigator William Killgore, PhD, assistant professor of psychology at Harvard Medical School and McLean Hospital in Belmont, Mass. "It suggests that even normal fluctuations in sleepiness may be capable of altering brain responses that are important for regulating dietary intake, potentially affecting the types of choices that individuals make when selecting whether and what to eat."

The research team of Killgore, lead author Melissa Weiner, and Zachary Schwab studied 12 healthy men and women between the ages of 19 and 45 years. The participants underwent functional magnetic resonance imaging (fMRI) while viewing pictures of high-calorie foods, low-calorie foods, and control images of plants and rocks. Subjective, self-reported daytime sleepiness was measured with the Epworth Sleepiness Scale, which evaluates how likely an individual is to doze off or fall asleep during certain situations such as while sitting and reading or watching TV.

According to the authors, prior evidence suggests that healthy adults activate inhibitory regions of the prefrontal cortex in response to high-calorie food images. However, insufficient sleep is often associated with reduced metabolic activity within these same prefrontal regions.

Killgore noted that the rapidly rising rate of obesity makes it important to understand the relationship between sleep-related factors, brain responses to food, and eating behavior.

"Given the chronic level of sleep restriction in our society, such relationships could have epidemiologic implications regarding the current increase in obesity in westernized countries," he said.

In a previous study published in Neuroreport in 2010, Killgore also found sex differences in cerebral responses to the caloric content of food images. Results of that study indicate that when viewing high-calorie food images, women showed significantly greater activation than men in brain regions that are involved in behavioral control and self-referential cognition.


'/>"/>

Contact: Emilee McStay
emcstay@aasmnet.org
630-737-9700
American Academy of Sleep Medicine
Source:Eurekalert

Related medicine news :

1. CPAP improves daytime sleepiness even in patients with low levels of symptoms
2. Risk of death is high in older adults with sleep apnea and daytime sleepiness
3. High-school seniors with excessive daytime sleepiness have an increased risk of depression
4. Sleep problems and sleepiness increase the risk of motor vehicle accidents in adolescents
5. Impaired Heart Function Seen in Teens With Type 2 Diabetes
6. Cognitive impairment seen in preschool children with epilepsy
7. Guide vests -- robotic navigation aids for the visually impaired
8. Penn researchers identify the roots of memory impairment resulting from sleep deprivation
9. 2 defective proteins conspire to impair the nerve cells powerhouse in Alzheimers disease
10. Indications of Alzheimers disease may be evident decades before first signs of cognitive impairment
11. Doctors should evaluate liver disease patients for cognitive impairment, address driving safety
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/5/2016)... , ... February 05, 2016 , ... Love is in ... in a variety of colors, assortments and packaging. This staple for Valentine’s Day is ... Kullen location. , For Valentine’s Day, not only are long-stem roses available, but ...
(Date:2/5/2016)... ... February 05, 2016 , ... ... franchisees of Popeyes Louisiana Kitchen restaurants, launched the 14th annual “Appetite for a ... and adults with muscular dystrophy, ALS and related diseases that severely limit strength ...
(Date:2/5/2016)... ... 05, 2016 , ... The Lymphoma Research Foundation (LRF) – ... serving the lymphoma community through a comprehensive series of education programs, outreach initiatives ... Tasting Event at the La Gorce Country Club in Miami Beach on March ...
(Date:2/5/2016)... ... February 05, 2016 , ... Give To Cure today announced ... and donate to Give To Cure’s campaign that is crowdfunding clinical trials to help ... and share payments through a smart device. In 2015 alone, Venmo processed $7.5 billion ...
(Date:2/5/2016)... ... 05, 2016 , ... Stuart Bentkover, MD, FACS is thrilled to ... the most effective tattoo removal today, Dr. Bentkover is the only doctor in Central ... the PicoSure has been approved by the Food and Drug Administration (FDA) as a ...
Breaking Medicine News(10 mins):
(Date:2/5/2016)... a medical devices company, is one of five recipients to ... Terry McAuliffe,s office. ivWatch will be receiving the STEM ... to be held at the Science Museum of ... that have made significant contributions to science. ... ivWatch ...
(Date:2/5/2016)... Feb. 5, 2016 ... of the "Global Musculoskeletal Partnering 2010-2016: ... profile to their offering. --> ... of the "Global Musculoskeletal Partnering 2010-2016: ... profile to their offering. --> ...
(Date:2/5/2016)... BEIJING , Feb. 5, 2016 ... ("Dehaier Medical" or the "Company"), which develops, markets ... products in China and ... restructuring plan which aims to concentrate the Company,s ... wearable sleep respiratory business and to focus more ...
Breaking Medicine Technology: