HOME >> BIOLOGY >> NEWS
MNI researchers find that sense of smell is dependent on body position

Before giving flowers or scattering rose petals on Valentine's Day, make sure your significant other has already gotten out of bed. In a study published recently in the journal Chemical Senses, researchers at the Montreal Neurological Institute (MNI) at McGill University discovered that sensitivity to rose odour is greater in subjects that are sitting than in those lying down.

This research, conducted in the laboratory of Dr. Marilyn Jones-Gotman at the MNI, adds to previous studies indicating that lying down negatively affects other senses, such as hearing and spatial perception. "This was an important finding for us, as many of our studies involve test subjects lying in an imaging machine such as MRI or PET (positron emission tomography) scanners. If perceptual ratings differ depending on whether the subject is outside a scanner (and sitting up) or inside a scanner (and lying down), then reliable 'threshold measures' or points of comparison will be difficult to obtain."

Test subjects were exposed to sixteen different concentrations of rose odour while they were sitting upright or lying down. The majority (63.9%) of participants were found to have a decreased sensitivity to the rose odour when lying down.

"There is a clear difference in olfactory sensitivity depending on the body position of the subjects," explained Dr. Johan Lundstrom, a postdoctoral fellow with Dr. Jones-Gotman, "Right now, we can only speculate as to the biological necessity of this difference. For example, is a lowered sensitivity to smell when lying down part of an overall sleep preparedness mechanism? Or perhaps the reason is only secondary to an increase of body fluid circulating throughout the brain? It could also be that we are simply not able to 'sniff' as deeply when in a supine position. Whatever the reason, we must now take this difference into account when planning future studies."


'"/>

Contact: Sandra McPherson
sandra.mcpherson@mcgill.ca
514-398-1902
McGill University
2-Feb-2006


Page: 1

Related biology news :

1. Innovative tagging technique may help researchers better protect fish stocks
2. Penn researchers discover how key protein stops inflammation
3. ASU researchers partner with UOP to make biofuel for military jets a reality
4. Einstein researchers prototype vaccine could provide improved protection against tuberculosis
5. Penn researchers discover pathway that eliminates genetic defects in red blood cells
6. U-M researchers find family of on switches that cause prostate cancer
7. 2007 EURYI: 20 young researchers to receive Nobel Prize-sized awards for breakthrough ideas
8. Pets could be source of multiresistant bacteria infections in humans, MU researchers investigate
9. MGH researchers confirm that bone marrow restores fertility in female mice
10. Smithsonians National Zoo researchers use electronic eggs to help save threatened species
11. U-M researchers identify gene involved in breast cancer

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/12/2020)... ... August 11, 2020 , ... Both Roche, based in ... into license agreements with Housey Pharma’s HMI subsidiary to gain access to its ... annual Research and Development spending in excess of US $10 billion. , Scientists ...
(Date:8/3/2020)... ... August 03, 2020 , ... Accumen Inc. is ... medical equipment manufacturer, Spectrum Solutions, to provide COVID-19 saliva testing kits nationally. ... chain for more than 10 years. Early in the COVID-19 crisis, we identified ...
(Date:7/18/2020)... ... ... Commercial launch readiness is a critical stage in a product life cycle. While ... global economic downturn will only increase price pressures overall for the industry. The era ... from every product launch is critical. However, history shows that only a third of ...
Breaking Biology News(10 mins):
(Date:7/18/2020)... ... July 16, 2020 , ... Medial ... early detection and prevention of high-burden diseases, and Centric Consulting, a business and ... organizations to utilize existing data in order to identify and prioritize patients for ...
(Date:7/10/2020)... ... July 08, 2020 , ... Bode Technology, ... of laboratory operations through its COVID-19 testing service, Bode-CARES . Bode-CARES combines ... Bode-CARES provides a turnkey solution that includes a comprehensive collection and ...
(Date:7/10/2020)... , ... July 09, 2020 , ... ... 1-phenyl-2-thiourea (PTU) is commonly used to suppress pigment formation in zebrafish embryos, maintaining ... research team led by Dr MA has been using the zebrafish model to ...
(Date:7/7/2020)... ... July 06, 2020 , ... R3 International is now ... up to 200 million stem cells. Depending on the patient's condition, treatment may be ... US will die having some form of Alzheimers dementia, and the incidence continues to ...
Breaking Biology Technology:
Cached News: