Headlines are the main titles of news stories that appear in newspapers, magazines, and other media outlets. EEGs, or electroencephalograms, are tests used to measure electrical activity in the brain. EEGs are often used to diagnose epilepsy and sleep disorders. THOUGHTS are ideas, opinions, or reflections that come from the mind. EEG is an abbreviation for electroencephalogram, which is a test used to measure electrical activity in the brain.