Functional imaging is a branch of neuroscience that focuses on studying brain activity and function by using non-invasive imaging techniques. These techniques allow researchers to observe changes in blood flow, metabolism, and neural activity in specific regions of the brain while an individual is performing tasks or engaging in various cognitive processes. Functional imaging can provide valuable insights into how the brain functions and help to understand the underlying mechanisms of neurodevelopmental disorders, mental illnesses, and neurological conditions. Some common methods of functional imaging include functional magnetic resonance imaging (fMRI), positron emission tomography (PET), and electroencephalography (EEG).