Featured Research

from universities, journals, and other organizations

Odor coding in mammals is more complex than previously thought

Date:
October 26, 2010
Source:
Rockefeller University Press
Summary:
The contribution of odorant receptors to olfactory response in mammals is much more complex than previously thought, with important consequences for odorant encoding and information transfer about odorants to the brain.

A new study in the Journal of General Physiology (JGP) shows that the contribution of odorant receptors (ORs) to olfactory response in mammals is much more complex than previously thought, with important consequences for odorant encoding and information transfer about odorants to the brain.

Related Articles


ORs, which provide a system for mammals to discriminate between many different odors, form a large, diverse group of G protein-coupled receptors corresponding to around 1,000 functionally distinct receptors in rodents and 350 in humans. Besides providing odorant specificity to olfactory receptor neurons (ORNs) and contributing to ORN axon targeting, little is understood about the OR contribution to olfactory response.

Johannes Reisert, from the Monell Chemical Senses Center in Philadelphia, now demonstrates that different odorant receptors have varying degrees of basal activity, which drives receptor current fluctuations and basal action potential firing. This basal activity can be suppressed by odorants functioning as inverse agonists. Furthermore, odorant-stimulated olfactory receptor neurons expressing different odorant receptors can have strikingly different response patterns in the later phases of prolonged stimulation. Thus, basal activity differences, inhibitory antagonism, and late-phase response patterns may contribute heretofore unsuspected information used by the olfactory system in categorizing odorants.


Story Source:

The above story is based on materials provided by Rockefeller University Press. Note: Materials may be edited for content and length.


Journal Reference:

  1. J. Reisert. Origin of basal activity in mammalian olfactory receptor neurons. The Journal of General Physiology, 2010; 136 (5): 529 DOI: 10.1085/jgp.201010528

Cite This Page:

Rockefeller University Press. "Odor coding in mammals is more complex than previously thought." ScienceDaily. ScienceDaily, 26 October 2010. <www.sciencedaily.com/releases/2010/10/101025123850.htm>.
Rockefeller University Press. (2010, October 26). Odor coding in mammals is more complex than previously thought. ScienceDaily. Retrieved January 28, 2015 from www.sciencedaily.com/releases/2010/10/101025123850.htm
Rockefeller University Press. "Odor coding in mammals is more complex than previously thought." ScienceDaily. www.sciencedaily.com/releases/2010/10/101025123850.htm (accessed January 28, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Wednesday, January 28, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Aquaponics Turn Suburban Industrial Park Into Farmland: Hume

Aquaponics Turn Suburban Industrial Park Into Farmland: Hume

The Toronto Star (Jan. 27, 2015) Ancient techniques of growing greens with fish and water are well ahead of Toronto bylaws. Video provided by The Toronto Star
Powered by NewsLook.com
Chihuahua Sleeps on Top of Great Dane

Chihuahua Sleeps on Top of Great Dane

Rumble (Jan. 27, 2015) As this giant Great Dane lays down for bedtime he accompanied by an adorable companion. Watch a tiny Chihuahua jump up and prepare to sleep on top of his friend. Now that&apos;s a pretty big bed! Credit to &apos;emma_hussey01&apos;. Video provided by Rumble
Powered by NewsLook.com
Madagascar Locust Plague Could Mean Famine For Millions

Madagascar Locust Plague Could Mean Famine For Millions

Newsy (Jan. 27, 2015) The Food and Agriculture Organization says millions could face famine in Madagascar without more funding to finish locust eradication efforts. Video provided by Newsy
Powered by NewsLook.com
Shark Bite Victim Making Amazing Recovery

Shark Bite Victim Making Amazing Recovery

AP (Jan. 27, 2015) A Texas woman who lost more than five pounds of flesh to a shark in the Bahamas earlier this month could be released from a Florida hospital soon. Experts believe she was bitten by a bull shark while snorkeling. (Jan. 27) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins