HomeDepartmentsECG and EEG Low cost EEG in Chennai The electroencephalogram (EEG) is a measure of brain waves. It is a readily available test that provides evidence of how the brain functions over time. 4.9 Overall Rating , based on 100+ reviews. Make Appointment EEG is often performed to confirm the presence of the following cond Epilepsy Dementia Narcolepsy Problems in the nervous system Problems in the brain or spinal cord Mental health problems You will receive the test results the very next day either by email or personnal.