قالب وردپرس درنا توس
Home https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Health https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Is the sense of smell different than previously thought? – Naturopathy and Naturopathy portal

Is the sense of smell different than previously thought? – Naturopathy and Naturopathy portal



Left-handed women often exhibit anomalies of sense of smell

Our sense of smell is influenced by the olfactory bulb (bulbs) and olfactory bulb disturbances are considered a possible cause of disability a sense of smell, according to the current state of research. In a recent study, however, an Israeli research team found that some people lack the olfactory bulb and still have a very good sense of smell.

Is olfactory bulb brain structure important in sense of smell? The research team of the Weizmann Institute of Science says: No! Because some people can smell good even without olfactory bulbs. It blends the precursors with the function of the sense of smell. The results of the study were published in the journal "Neuron".

Missing olfactory bulbs due to odor disorders

Previous studies have shown that frequent sense of smell does not work in the case of a congenital absence of olfactory bulbs. As an indication for participation in these studies, however, an odor disorder is commonly used. People without olive bulbs in the factory, whose olfactory capacity is normal, are therefore excluded. In studies in rodents that the olfactory bulb was removed, there was evidence that the sensation was still preserved. However, they have not received much attention in the medical world until now.

MRI with Surprising Search
Tali Weiss, Sagit Shushan and Prof. Noam Sobel from the Department of Neurobiology at the Weizmann Institute of Science has now evaluated the function of sense of smell on the basis of MRI tests. Surprisingly, researchers found a 29-year-old woman with no olive bulb, although her sense of smell worked perfectly normally.

Four percent of left-handed women were affected

"We tested their olfactory abilities in every conceivable way, and they were right," said Prof. Sobel in a press release from the Weizmann Institute of Science. His sense of smell was actually above average and he had no olfactory bulb, Sobel reports. Researchers also noticed the same phenomenon in a 26-year-old. Therefore, they crawled available data from more than 1

,100 participants (including 606 women) and found that about 0.6 percent of women – and up to four percent of left-handed women were affected.

No men showed any phenomenon

However, researchers could not identify a single male with both a bad sense of smell and a missing olive bulb. It is also surprising that among known women are two left monozygotic twins, both of whom perform better odor tests than their twin siblings with normal olfactory olives, the research team reports.

Previous theories are out of date? the previous idea that the olfactory bulb was absolutely necessary for the act of smelling, strongly suspected, emphasized the researchers. Obviously, "women are smelling the world like the rest of us, and we don't know how to achieve that," Professor Sobel said. (fp)

Author:

Dipl. Geogr. Fabian Peters

Sources:

  • Tali Weiss, Timna Soroka, Lior Gorodisky, Sagit Shushan, Kobi Snitz, Reut Weissgross, Edna Furman-Haran, Thijs Dhollander, Noam Sobel: Human Olfaction without the Missing Olfactory Bulbs; in: Neuron (published 11/6/2019), cell.com
  • Weizmann Institute of Science: An Exclusion Rule: An Intact Sense of Smell without a Crucial Olfactory Brain Structure (published 11/6/2019), wis -wander.weizmann .ac.il


Source link