White noise, pink noise, and brown noise can amplify the activity of neurons in the prefrontal cortex, which is directly related to the ability to direct and maintain focus.

“There is indeed some data to support the fact that white noise, and to some extent, pink noise and brown noise can support the release of particular neurochemicals, but more data showing that they can amplify the activity of neurons in the so-called prefrontal cortex, this front area, sort of the bumper behind your forehead, that is directly related to your ability to direct your own focus and remain focused on certain things.”