These women are missing the ‘scent region’ of the brain. How do they still smell?

img
Image: Smell Festival

When Tali Weiss and her colleagues at the Weizmann Institute of Science found a patient that had an otherwise normal sense of smell, but with no apparent [olfactory bulb], they were surprised. In a serendipitous observation, the team was scanning a woman that was supposed to be a “healthy control” for a different study. When analyzing the MRI scan of that patient, the scientists found no OB at all. Curious, they enrolled more participants for this study, and after several scans, they found another woman without an OB who could smell just fine.

As far as how smell is being processed in brains with no OBs, there are different hypotheses being considered. One possibility is that the neurons that usually compose the OB migrated; another possibility is that other parts of the olfactory circuit, like the upstream mitral cells, took over the OB’s responsibilities.

Related article:  Brain organoids may have 'critical' research limitation: Imperfect modeling of human development

Detecting anosmia early has not been a high priority medical goal. In fact, most people only realize they are not able to smell during their teenage years. These new results show that there might be a mechanism in which the brain is able to adapt to the lack of that structure.

Read the original post

Outbreak
Outbreak Daily Digest
Biotech Facts & Fallacies
Talking Biotech
Genetics Unzipped
Video: Test everyone – Slovakia goes its own way to control COVID

Video: Test everyone – Slovakia goes its own way to control COVID

As Europe sees record coronavirus cases and deaths, Slovakia is testing its entire adult population. WSJ's Drew Hinshaw explains how ...
mag insects image superjumbo v

Disaster interrupted: Which farming system better preserves insect populations: Organic or conventional?

A three-year run of fragmentary Armageddon-like studies had primed the journalism pumps and settled the media framing about the future ...
dead bee desolate city

Are we facing an ‘Insect Apocalypse’ caused by ‘intensive, industrial’ farming and agricultural chemicals? The media say yes; Science says ‘no’

The media call it the “Insect Apocalypse”. In the past three years, the phrase has become an accepted truth of ...
globalmethanebudget globalcarbonproject cropped x

Infographic: Cows cause climate change? Agriculture scientist says ‘belching bovines’ get too much blame

A recent interview by Caroline Stocks, a UK journalist who writes about food, agriculture and the environment, of air quality ...
organic hillside sweet corn x

Organic v conventional using GMOs: Which is the more sustainable farming?

Many consumers spend more for organic food to avoid genetically modified products in part because they believe that “industrial agriculture” ...
benjamin franklin x

Are most GMO safety studies funded by industry?

The assertion that biotech companies do the research and the government just signs off on it is false ...
favicon

Environmental Working Group: EWG challenges safety of GMOs, food pesticide residues

Known by some as the "Environmental Worrying Group," EWG lobbies for tighter GMO legislation and famously puts out annual "dirty dozen" list of fruits and ...
m hansen

Michael Hansen: Architect of Consumers Union ongoing anti-GMO campaign

Michael K. Hansen (born 1956) is thought by critics to be the prime mover behind the ongoing campaign against agricultural biotechnology at Consumer Reports. He is an ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
Optional. Mail on special occasions.
Send this to a friend