what is the difference between electrocardiogram and electroencephalogram??
ECG (electrocardiogram) is a test that measures the electrical activity of the heart. In an ECG test, the electrical impulses made while the heart is beating are recorded and usually shown on a piece of paper.
EEG (electroencephalogram) is a test that measures the electrical activity of the brain. Neurons generate electrical signals when they communicate with each other. When EEG test is performed, small electrodes are placed on to a person's scalp. These electrodes pick up electrical signals and send them to a machine called electroencephalograph which records the signal and displays it on computer screen or paper.