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.
It is named after the Norwegian-American golf club manufacturer Karsten Solheim, who was a driving force behind its creation. The inaugural Cup was held in 1990, and the event was staged in even number years until 2002, alternating years with the Ryder Cup (the equivalent men's event).