home   genetic news   bioinformatics   biotechnology   literature   journals   ethics   positions   events   sitemap
 
  HUM-MOLGEN -> Genetic News | search  
 

A Taste Of The Unexpected

 
  February, 14 2006 10:58
your information resource in human molecular genetics
 
     
We don't always perceive things the way they are. People's expectations of a taste modify activity in the primary taste areas of the brain, reports a study in the March issue of Nature Neuroscience.

Jack Nitschke and colleagues studied how expectancy influences the way we perceive a taste by monitoring the brain activity of subjects presented with different tastes. During brain scanning, subjects tasted an unpleasant bitter or a pleasant sweet taste, and then indicated how aversive they found the taste. Before each tasting, they saw a cue that signaled whether the taste would be pleasant or unpleasant. Occasionally, these cues were misleading, and a very unpleasant taste was preceded by a cue indicating only a mildly unpleasant taste. Subjects rated the unpleasant taste as less aversive when it was preceded by this misleading cue, and this perception was accompanied by less activation in the primary taste cortex. When the same taste was preceded by the correct cue, indicating it would be very unpleasant, subjects found it more aversive, and there was greater activation in the primary taste cortex.

These results indicate that contrary to previous research, the primary taste cortex does not respond solely to inputs from taste buds, and that expectancy modulates our perception of events.

Author contact:
Jack Nitschke (University of Wisconsin, WI, USA)
E-mail: jnitschke@wisc.edu

Abstract available online.

(C) Nature Neuroscience press release.


Message posted by: Trevor M. D'Souza

print this article mail this article
Bookmark and Share this page (what is this?)

Social bookmarking allows users to save and categorise a personal collection of bookmarks and share them with others. This is different to using your own browser bookmarks which are available using the menus within your web browser.

Use the links below to share this article on the social bookmarking site of your choice.

Read more about social bookmarking at Wikipedia - Social Bookmarking

Latest News
Variants Associated with Pediatric Allergic Disorder

Mutations in PHF6 Found in T-Cell Leukemia

Genetic Risk Variant for Urinary Bladder Cancer

Antibody Has Therapeutic Effect on Mice with ALS

Regulating P53 Activity in Cancer Cells

Anti-RNA Therapy Counters Breast Cancer Spread

Mitochondrial DNA Diversity

The Power of RNA Sequencing

‘Pro-Ageing' Therapy for Cancer?

Niche Genetics Influence Leukaemia

Molecular Biology: Clinical Promise for RNA Interference

Chemoprevention Cocktail for Colon Cancer

more news ...

Generated by News Editor 2.0 by Kai Garlipp
WWW: Kai Garlipp, Frank S. Zollmann.
7.0 © 1995-2017 HUM-MOLGEN. All rights reserved. Liability, Copyright and Imprint.