Functions located in the region ?

Hi everyone~

I am trying to figure out the meaning of the part underlined but to be sorry, I can't understand the meaning, especailly "located in the region."

Is it possible for functions to be located? And what does "the region" refer to?

To be sorry, the paragraph is a little bit long but for your understanding, I put it all.

If you can get some idea about those questions, please let me know that.

Thank you~

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A dedicated function in the brain means that neurons are concerned with the carrying out of particular tasks. For example, if a child were to begin to play a musical instrument, the dedicated music neurons in the brain will become active. With practice and improvement, the communication between this set of neurons will become more efficient. If the child develops a high level of music proficiency, the number of dedicated neurons
will increase. The rich network of neurons is more capable of making connections between new things learned and music. In addition, brain functions located in the region primarily involved in learning music will also benefit, which is why actively playing music has been consistently found to improve focus and spatial reasoning. The more you know about any subject matter, the more likely it will be to connect to related learning and eventually to unrelated information.