Latest Olfactory system Stories
The human nose expresses nearly 400 odorant receptors, which allow us to distinguish a large number of scents.
Odorant receptors of recent insects evolved long after insects migrated from water to land.
For decades, experts have claimed that people were capable of detecting 10,000 different odors, but new research appearing in March 21 edition of Science suggests that the actual number of scents detectable by the human nose is considerably higher.
While scientists know that a superfamily of genes inside olfactory receptors is responsible for our sense of smell – we still don’t know the mechanism behind the interpretation of odor molecules into a particular smell.
New research has revealed that odor receptors aren’t just found in the nose – they also line the lungs as well.
People react differently to the same smells. Something that smells wonderful to you could be offensive to your friend, but why this is so has been a mystery. The answer could lie in your genetic makeup, says a research team from Duke University.
Neuroscientists have found that fear reactions can occur in the olfactory system before the brain has had an opportunity to interpret and associate a particular odor with trouble.
According to Gertrude Stein, "A rose is a rose is a rose," but new research indicates that might not be the case when it comes to the rose's scent.
Environmental stimuli often trigger our sense of smell before we exhibit any other response. Smells trigger neurons in our brains that alert us to take action, but there is often more than one odor in our environments at any given time.
Think of the smell of an orange, a lemon, and a grapefruit. Each has strong acidic notes mixed with sweetness.
- A woman chauffeur.
- A woman who operates an automobile.