"To study the brain" means to learn about and research the different parts, functions, and activities of the brain in order to understand how it works and how it affects our thoughts, feelings, and behaviors. Full definition
Researchers studied the brains of people 90 years old or older who had excellent memories, performing as well as people in their 50s and 60s on some tests. (sciencenews.org)
By studying brain activity in rats, scientists have discovered that the information played out during the brain replay process depends on the task the animal is facing. (statesforbiomed.org)
They can also live on their own, and this ability to switch between a social and a solitary lifestyle makes them valuable models for studying brain evolution. (newscientist.com)