How did we smell good?

Breathing air is simply putting the smell of vacuum into your nostrils, which increases the electrical signals from the nose to the brain to help the nose detect even the foul smells. Minghong Ma, a professor of neuroscience at Pennylvania University, said ' sniffing ' helps us smell better.

Professor Ma and her colleagues learned the secret of sniffing by conducting research on the mouse nose. Experts blew a mixture of almond-like aromas and bananas into mice. As expected, they produce a reaction from olfactory neurons, key nasal cells and then a sense of smell.

They also blew an odorless mist into the nose. Rats also had a similar but less reactive effect on olfactory cells. And when you increase the pressure of those odorless streams, the reaction also decreases.

(Photo: Sciencedaily) University of California San Diego professor Jeffry Isaacson co-researches said this was surprising

Because most sensory cells in the body are designed to detect single sensory inputs such as light, odor or taste. This is the case where a single sensory neuron that we believe is responsible for the odor also reacts to mechanical stress such as pressure or steam.

Professor Ma stressed that they were initially uncomfortable with their own research, because they were almost mindful of the way the odor information was encoded by olfactory cells. However, the reactions detected in olfactory neurons have caused some difficulties for the experiment.

Ma and her colleagues also discovered that mechanical stimulation from ' sniffing ' can help improve neurological activity and thus promote nose sensitivity, especially when it comes to odors. The airflow in the nose can help stimulate nerve cells to detect odors that these cells previously could not detect because they were in an agitated state.

Ma added that we still do not know how to proceed with this process, but the " sniffing " is necessary for the sense of smell.

Professor Isaacson emphasized that the sense of smell is very important for most animals it involves promoting the search for the smell of food or the smell of a partner even as a predator can be developed to help them survive. And so do we.

Anh Phuong