Invasive and noninvasive methods of stimulating the brain to treat psychiatric and neurological disorders. — Brain stimulation, also known as neuromodulation, refers to techniques that are used to modify brain activity, which in turn can alter thoughts, emotions, and behavior. Well-articulated by the scientific journal Brain Stimulation, neuromodulation includes the “noninvasive and invasive techniques and technologies that alter brain function using electrical, magnetic, radiowave, sound…