The (Electroencephalogram) EEG machine utilizes terminals set on the scalp to gauge electrical activity of the cerebrum, particularly the cerebral cortex. It quantifies alpha waves (short active waves) when one is conscious and when one is asleep it gauges delta waves which are long latent waves. The EEG measures mass changes in synaptic activity in the nerves of the brain and is useful in diagnosing, treating and assessing diseases that change electrical activity in the cerebrum, for example, epilepsy. The MRI (Magnetic Resonance Imaging) and (Computerized Axial Tomography) CAT scan are utilized to examine the brain structures however it doesn’t indicate cerebrum action or capacity of the brain.The CAT scan gives a 3D photo of the brain which is great for finding tumors, An MRI gives a deatiled photo of the brain, since it utilizes magnetic fields to thump electrons of their obirt. There is no radiation but it just gives us an idea of structure permitting distinguishing identification of brain damage and size. For instance, numerous individuals experiencing more sever instances of schizophrenia demonstrate littler than ordinary measured areas, particularly in the front of the brain. A PET (Positron Emission Tomography) and Functional MRI scan are the best way for us to see activity in the brain. The PET distinguishes quickly decaying radioactive atoms that are infused into the veins. The fMRI utilizes changes in an exceptional magnetic field. The two strategies measure changes in blood stream all through the brain to indicate how dynamic every little zone of the brain is. Photon movement tomography (PMT) is another new strategy for estimating cortical action and surveys the diffusing of close infrared light from the mind tissue. Transcranial magnetic incitement is a system used to energize neurons utilizing solid and time-fluctuating attractive fields.