Navigation Links
How taste response is hard-wired into the brain

Instantly reacting to the sweet lure of chocolate or the bitter taste of strychnine would seem to demand that such behavioral responses be so innate as to be hard-wired into the brain. Indeed, in studies with the easily manipulable fruit fly Drosophila, Kristin Scott and colleagues reported in the January 19, 2006, issue of Neuron experiments demonstrating just such a hard-wired circuitry.

Their findings, they said, favor a model for taste encoding in the brain that holds that specific cells are dedicated to detecting specific tastes. Competing models hold that multiple neurons combine information to encode taste, or that the timing of patterns of taste information encodes taste.

In their studies, the researchers explored the behavioral effects of activating fly taste neurons that had either of two chemical taste receptors on their surface. In earlier studies, the researchers had shown that the Gr5a receptor on taste neurons was essential for response to sugar and that the Gr66a receptor was essential for response to bitter tastes. However, those studies left open the question of whether those different neurons selectively detected the different tastes and whether they generated taste behaviors.

To directly monitor taste responses of the flies, the researchers generated flies with fluorescent labels on their neurons that would signal activation of one or the other type. They used microscopic imaging through tiny windows in the fly brains to watch neuronal response when they exposed the flies to sweet or bitter chemicals

They found that a whole range of sweet substances selectively switched-on the Gr5a neurons, while a range of bitter substances switched-on the Gr66a neurons. However, the "sweet neurons" did not respond to bitter substances, and vice versa.

In behavioral studies, they found that flies preferred to spend time tasting substances that activated the Gr5a neurons and avoided substances that activated Gr66a neurons.<
'"/>

Source:Cell Press


Page: 1 2

Related biology news :

1. Childrens taste sensitivity and food choices influenced by taste gene
2. Evolution of taste receptor may have shaped human sensitivity to toxic compounds
3. Bad aftertaste? New sensory on/off switch may cure bane of artificial sweetener search
4. Bitter or sweet? The same taste bud can tell the difference
5. Have a taste for fat? Yes! A sensor in the mouth promotes preference for fatty foods
6. Living taste cells produced outside the body
7. Great (taste) expectations: Study shows brain anticipates taste, shifts gears
8. Sweet water taste paradoxically predicts sweet taste inhibitors
9. Variation in bitter-taste receptor gene increases risk for alcoholism
10. Scientists solve sour taste proteins
11. Tastes great! Study shows brains response to pleasing -- and changing -- tastes
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: How taste response hard wired into the brain

(Date:3/26/2015)... The Granite Club, ... club, today announced it has implemented a state-of-the-art access ... for members and staff, while restricting access to authorized ... selected FST,s IMID Access system because it has the ... and staff, in addition to unparalleled security," said ...
(Date:3/24/2015)... DUBLIN , Mar. 24, 2015 Research and ... addition of the "Global Iris Recognition Market 2015-2019" ... forecast the Global Iris Recognition market to grow at ... This report covers the present scenario and ... for the period 2015-2019. To calculate the market size, ...
(Date:3/24/2015)... DUBLIN , Mar. 24, 2015 Research and Markets ... "Face and Voice Biometrics - Global Strategic Business Report" report ... for Face and Voice Biometrics in US$ Thousands by the following ... analytics for the US, Canada , ... , Middle East & ...
Breaking Biology News(10 mins):Granite Club First Private Club in North America to Implement FST Biometrics Secure Access Solution, as Part of Multi-million Dollar Expansion 2Global Iris Recognition Market 2015-2019 with 3M Cogent, Bioenable Technologies, Cross Match Technology, Iris ID Systems & Safran Dominating 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6
... French . Scientists at the Omics Science ... along with researchers from McGill University and other institutions worldwide ... in mammals. Three years of intensive research by members of ... several milestone scientific papers in Nature Genetics and ...
... Abboud began his work at the University of Iowa in ... the brain and the blood vessels. His research since has ... flow to meet the body,s constantly changing demands. The ... be on the way: Dr. Abboud defined the identity of ...
... of the status of conservation efforts in the United ... just-released database that allows wildlife and conservation professionals to ... protected areas. Several federal, state, and non-government agencies ... the Protected Areas Database United States (PAD-US). ...
Cached Biology News:Major international study challenges notions of how genes are controlled in mammals 2Translating the conversation between the brain and blood vessels 2Translating the conversation between the brain and blood vessels 3What's protected, what's not? 2What's protected, what's not? 3
(Date:3/27/2015)... 27, 2015 Earlier this year, the ... of hair regrowth in adult men and women with ... Norwood Hamilton classifications of IIa-V and Fitzpatrick Classification of ... by products that over-promise and under-deliver, FDA Clearance underscores ... and confidence among more than 80 million men and ...
(Date:3/27/2015)... UK (PRWEB) March 27, 2015 The ... the back of the recession and high prices in ... market has recovered and keeps on gaining momentum now. ... NPK stands at more than 100,000 thousand tonnes. No ... years. Meantime, the global capacity rocketed during 2012-2013, registering ...
(Date:3/27/2015)... 2015  Peter Walter wurde als Gewinner ... seine bahnbrechende Arbeit ausgewählt, die sich damit ... sowie für die Entschlüsselung der Komponenten eines ... nutzen, der mit der Ansammlung von deformierten ... Biochemie an der University of California, San ...
(Date:3/27/2015)... 2015  Neogen Corporation (NASDAQ: NEOG ) announced ... trading plan in accordance with Securities and Exchange Commission ... of Neogen Corporation, is a minority owner of this ... Herbert does not have control of this ... is only for a portion of the shares owned ...
Breaking Biology Technology:Dr. Robert Leonard Applauds FDA Clearance of Capillus272Pro™ Hair Loss Laser Cap 2World NPK Fertilizers Market Keeps On Gaining Momentum, According to BAC Reports Study Available at MarketPublishers.com 2World NPK Fertilizers Market Keeps On Gaining Momentum, According to BAC Reports Study Available at MarketPublishers.com 3Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 2Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 3Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 4Neogen CEO adopts 10b5-1 Trading Plan 2
... Aug. 16 /PRNewswire-FirstCall/ Carrington Laboratories,Inc., a global provider ... today that it received a letter from The,Nasdaq ... determined to,delist the securities of the Company, and ... of the open of business on Thursday, August,16, ...
... tools and information to sustain ... and testing, PHILADELPHIA, Aug. 17 Roche representatives,will ... Saturday,August 18 - Sunday, August 19 to educate the ... factors, the importance of getting,tested and possible treatment options. ...
... 17 Emisphere,Technologies, Inc. (Nasdaq: EMIS ) announced ... million shares of common stock and warrants to,purchase 0.4 ... of $3.785,per unit. The five-year warrants will be exercisable ... at an exercise price of $3.948 per share. ...
Cached Biology Technology:Carrington Announces Nasdaq Communication; Prepares for Shares to Be Quoted on the OTC Bulletin Board and Pink Sheets 2Roche Joins Forces With Enon Tabernacle Baptist Church to Provide Free Hepatitis C Testing to the Community 2Roche Joins Forces With Enon Tabernacle Baptist Church to Provide Free Hepatitis C Testing to the Community 3Emisphere Technologies, Inc. Announces Pricing of Registered Direct Offering 2
... PrecisION Ion Channel Cell Lines ,High Quality, ... channels are well known for having a ... and consequently have a key function in ... modulate ion channels have been investigated in ...
Mouse monoclonal antibody raised against a partial recombinant ENTPD5. NCBI Entrez Gene ID = ENTPD5...
... Mouse monoclonal antibody raised ... Immunogen: ... 206 a.a) partial recombinant protein ... Accession Number: NM_005802 ...
Mouse monoclonal antibody raised against a partial recombinant IL31RA. NCBI Entrez Gene ID = IL31RA...
Biology Products: