Navigation Links
Pleasure response from chocolate: You can see it in the eyes
Date:6/24/2013

PHILADELPHIA (June 24, 2013) The brain's pleasure response to tasting food can be measured through the eyes using a common, low-cost ophthalmological tool, according to a study just published in the journal Obesity. If validated, this method could be useful for research and clinical applications in food addiction and obesity prevention.

Dr. Jennifer Nasser, an associate professor in the department of Nutrition Sciences in Drexel University's College of Nursing and Health Professions, led the study testing the use of electroretinography (ERG) to indicate increases in the neurotransmitter dopamine in the retina.

Dopamine is associated with a variety of pleasure-related effects in the brain, including the expectation of reward. In the eye's retina, dopamine is released when the optical nerve activates in response to light exposure.

Nasser and her colleagues found that electrical signals in the retina spiked high in response to a flash of light when a food stimulus (a small piece of chocolate brownie) was placed in participants' mouths. The increase was as great as that seen when participants had received the stimulant drug methylphenidate to induce a strong dopamine response. These responses in the presence of food and drug stimuli were each significantly greater than the response to light when participants ingested a control substance, water.

"What makes this so exciting is that the eye's dopamine system was considered separate from the rest of the brain's dopamine system," Nasser said. "So most people and indeed many retinography experts told me this would say that tasting a food that stimulates the brain's dopamine system wouldn't have an effect on the eye's dopamine system."

This study was a small-scale demonstration of the concept, with only nine participants. Most participants were overweight but none had eating disorders. All fasted for four hours before testing with the food stimulus.

If this technique is validated through a
'/>"/>

Contact: Rachel Ewing
raewing@drexel.edu
215-895-2614
Drexel University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Study: Exercise can lead to female orgasm, sexual pleasure
2. UCI-led study uncovers how Salmonella avoids the bodys immune response
3. BUSM researchers identify key regulator of inflammatory response
4. Marine scientists urge government to reassess oil spill response
5. Immune-response genes affecting breast tumor eradication
6. Experiments may understate plant responses to climate
7. European mountain plant population shows delayed response to climate change
8. Discovery of mechanisms predicting response to new treatments in colon cancer
9. London researchers discover novel mechanism involved in key immune response
10. Key part of plants rapid response system revealed
11. How bacteria change movement direction in response to oxygen: Molecular interactions unravelled
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/11/2014)... N.C. , Dec. 10, 2014  That blood pressure ... quite a while. Hypertension – the medical term for high ... the early 1800s, and the inflatable cuff that,s used in ... doesn,t, however, mean there,s nothing new about hypertension, its triggers ... long-held beliefs about the condition and the best ways to ...
(Date:12/10/2014)... YORK , Dec. 8, 2014 You,ve been ... banking account but can,t remember your password, site key or ... Who was your first grade teacher? Today, ... the app that will finally put an end ... – 1U TM . 1U leverages a user,s ...
(Date:12/10/2014)... N.C. , Dec. 9, 2014  Wake Forest Baptist ... education building for its School of Medicine. Funding for ... larger capital campaign that will be publicly launched next ... be located in the former 60 series R.J. Reynolds ... Innovation Quarter. Construction will begin immediately with plans to ...
Breaking Biology News(10 mins):Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4
... world,s population is at risk of infection by the dengue virus, ... therapy to protect people from the virus could finally be a ... paper published today in the Proceedings of the National Academy ... Cancer Research, present a novel approach to developing a dengue therapy ...
... New York, NY and San Diego Calif. Proteins that ... aberrant signaling drives the wild proliferation of cells that gives ... receptor (EGFR), fuels a wide variety of cancersincluding a highly ... block its signaling tend to work only for a short ...
... by the human papilloma virus (HPV) has tripled since the ... This study discovered a new mechanism by which HPV causes ... that blocks the mechanism;, The findings could lead to ... COLUMBUS, Ohio Researchers have discovered a new mechanism ...
Cached Biology News:Research advances therapy to protect against dengue virus 2Research advances therapy to protect against dengue virus 3A hijacking of healthy cellular circuits 2A hijacking of healthy cellular circuits 3Researchers design drug to restore cell suicide in HPV-related head and neck cancer 2
(Date:12/19/2014)... 2014 Decision Resources Group finds that the ... 12 percent compound annual growth rate through 2023. This ... and the increasing adoption of dental implants. Growing aesthetic ... also spur demand for dental biomaterials because they can ... treatments. Other key findings from Decision Resources ...
(Date:12/19/2014)... (PRWEB) December 18, 2014 Today, ... locate its pilot production facility and future company ... and produce innovative new materials that safely and ... not only because of its historic, strong support ... efforts to attract leading edge, technology-based companies such ...
(Date:12/19/2014)... 2014 Reports from CDC ... suffer from one or more chronic health conditions - ... can address some of these diseases, but may not ... sufferers face. While implanted nerve stimulation devices today offer ... nerve, which can induce side effects. , To ...
(Date:12/19/2014)... The empty capsules market is ... population and technological innovations in the empty capsules ... catalysing the growth of the empty capsules market. ... , Scope of Report , The report will ... entrants/smaller firms to gauge the pulse of the ...
Breaking Biology Technology:Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 2Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 3Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 2Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 3Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 4Draper Wins GSK Funding for Smaller, Smarter Implantable Devices 2Empty Capsules Market Hit to Reach $1,820 Million by 2019 - New Research Report by MarketsandMarkets 2Empty Capsules Market Hit to Reach $1,820 Million by 2019 - New Research Report by MarketsandMarkets 3Empty Capsules Market Hit to Reach $1,820 Million by 2019 - New Research Report by MarketsandMarkets 4
... United States Catholic Bishops did not waver, and after ... . , , Wisconsin Right to Life , however, is ... stem cells from human embryos that does not destroy embryos, and ... , ,While various objections still remain, could the fact that this ...
... ilwaukee, Wis. - Teresa Esser sees incredible ... as the new director of the Milwaukee-based Silicon ... more of that opportunity realized. , ,While others are ... in Wisconsin, particularly in the tech sector, Esser sees ...
... - Ten years from now, when people sit in ... clarity, they probably won't think much about the people that ... hard at work as movie-goers take in the last reels ... situated in Hollywood. One of them is Jane Durment, CIO ...
Cached Biology Technology:There's a new dynamic in the stem cell debate 2There's a new dynamic in the stem cell debate 3There's a new dynamic in the stem cell debate 4New Silicon Pastures director envisions more home cooking for Wisconsin angels 2New Silicon Pastures director envisions more home cooking for Wisconsin angels 3New Silicon Pastures director envisions more home cooking for Wisconsin angels 4New Silicon Pastures director envisions more home cooking for Wisconsin angels 5New Silicon Pastures director envisions more home cooking for Wisconsin angels 6CIO Leadership Series: Jane Durment, Marcus Corp. 2CIO Leadership Series: Jane Durment, Marcus Corp. 3CIO Leadership Series: Jane Durment, Marcus Corp. 4
... The IDS 25-Hydroxy Vitamin D ... the quantitative determination of 25-hydroxyvitamin D ... in human serum or plasma. Our ... inconvenience of solvent precipitation and centrifugation ...
... agarose suitable for a wide range of ... to Pulsed Field Gel Electrophoresis (PFGE). Due ... limits, Multi ABgarose can effectively separate large ... in turn means reduced band diffusion, a ...
Mouse monoclonal [1.F.1] to Yersinia pestis F1 antigen ( Abpromise for all tested applications). Antigen: Purified F1 antigen of Y. pestis vaccine strain EB....
Rabbit polyclonal to L Kynurenine ( Abpromise for all tested applications). Antigen: Synthetic peptide L Kynurenine conjugated to a protein carrier. Entrez Gene ID: 8942 Swiss Protein ID...
Biology Products: