human
I've heard that the human brain is the most complex organ in the body. How do scientists study the brain?
assistant
Scientists study the brain by using a variety of techniques, including neuroimaging, which uses magnetic resonance imaging (MRI) or positron emission tomography (PET) scans to visualize the structure and activity of the brain. Other methods include electroencephalography (EEG), which measures electrical activity in the brain; and transcranial magnetic stimulation (TMS), which uses electromagnetic pulses to stimulate certain areas of the brain. These tools are used to understand how the brain works and how it can be affected by disease, injury, and other factors.