Guide. An electroencephalogram (EEG) is a test that measures and records the electrical activity of your brain. Special sensors (electrodes) are attached to your head and hooked by wires to a computer.
The South Korea flag was officially adopted on October 15, 1949. The three black unbroken bars (upper left) symbolize heaven, the trigram (lower left) symbolizes fire, the trigram (upper right) symbolizes water, while the three broken bars (lower right) symbolize earth. The white field represents the traditional color of the Korean people.
Overview of Seoul - The Capital and Largest City in South Korea. The South Korea flag is white with a red (top) and blue yin-yang symbol in the center; there is a different black trigram from the ancient I Ching (Book of Changes) in each corner of the white field. Source: CIA World Factbook, 2007.