ECG is the short form of Electrocardiogram, while EEG is the short form of Electroencephalogram. Both are related in that they are used for measuring the electrical activities of some areas in the body, this equally shows they are different in terms of purpose. While ECG is used for measuring the electrical activities in the heart, EEG is used for measuring the electrical activities in the brain.
ECG is used mostly for detecting the positions of the heart chamber, also for determining the rate of the heartbeat and to detect any possible problem in the heart. EEG, on the other hand, is used for diagnosing various diseases and infections of the brain, problems like seizure disorder, tumors can also be detected when you use EEG. While ECG can be used and you won't feel any form of pain, the use of EEG can result into some conditions that are not pleasant.
EEG is an abbreviation for electroencephalogram, which is a method of evaluating the brain's electrical activity. The ECG is an abbreviation for electrocardiograph, which is an electrical recording of the heart, and it is used for the investigation of heart disease. EEG is usually taken to detect epilepsy (seizure disease), sleeping disorders (narcolepsy), and it is also sometimes used to determine the alterations in conscious level.
The technician can take EEG and ECG, and a specialist doctor will interpret it and report it. ECG can be performed without special preparation. EEG, on the other hand, usually requires special qualifications.