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.
The red background of the flag symbolizes bravery and valor, the sun represents peace and wealth, and the tunduk signifies the family home or, by extension, the universe. According to popular interpretations, the sun's 40 rays represent the 40 Kyrgyz tribes unified against the Mongols by the epic hero Manas.