
Brain mapping is a technique used to study the structure and functions of different regions of the brain. Brain mapping refers to a recording of brain wave activities. Brain mapping helps surgeons in identifying brain areas responsible for critical functions of the body such as movement, vision, sensation, and speech. Brain mapping helps in the detection of various abnormalities such as tumors, seizures, toxic injuries, Alzheimer diseases, infections. Brain mapping also helps in identifying the external environment, which changes brain structure and reason of mental illness and brain diseases . Brain mapping also identifies physical injuries to the brain such as concussion. Brain mapping is done through stimulation of certain brain areas that perform language, motor, sensory, and visual functions. Some of the brain-mapping instruments are computed tomography, positron emission tomography, electroencephalography, magnetoencephalography, near-infrared spectroscopy, and functional magnetic resonance imaging. These techniques help in measuring cerebral blood flow, metabolism, and structural integrity of the brain. These techniques help doctors to view problems within the human brain without invasive neurosurgery. Brain mapping is performed in two ways: two-stage procedures and directly during surgery. Brain mapping, which is performed during surgery, is also known as intraoperative brain mapping. The brain mapping procedure time depends upon targeted brain tissues for surgery and locations of surgery. Brain mapping can be customized to suit different situations and requirements.