Scientists have long known that rodents’ brains, like mice’s and rats’, can make new brain cells throughout their lives.

According to this knowledge and indirect evidence, they put their minds to discovering the same brain’s function in humans. And they succeeded.

Neuroscientists from Auckland University and Carlsson Institute for Neuroscience in Sweden worked together to find a cell pathway through which the adult brain could repair itself. They found that these fresh cells are being born in one part of the brain and migrate from there to the olfactory bulb, where smells are processed. On their way, they turn into neurons.

The search for this specific pathway has been long and complexed because human brains are far more developed than rodents’ are.

This specific finding is crucial as it may help understand what makes these cells multiply and travel, possibly learn how to enhance this production and redirect the path of new cells to areas where cells are damaged.