An electroencephalogram -- or EEG -- machine measures electrical impulse activity in the brain and can help give a diagnosis for conditions such as epilepsy.
His name is one of the most famous in the world of sport - yet almost nobody knows who the man was. Roland Garros has become synonymous with clay court tennis since the French Open was named in his honour in 1928. Now, his name is daubed in green and rust-red on almost every surface available to marketeers at Stade Roland Garros in Paris - from tennis balls and benches to parasols and sun hats.
The idea for bringing racing to this central part of France came from a politician: Jean Bernigaud, the young mayor of Magny-Cours. Possibly the idea came to him following a trip to the French Grand Prix at Reims in 1954, where he saw that the public roads could be turned into a racing circuit.