Purdue University researchers have created a tiny transmitter, about the size of a nickel, that can detect signs of an epileptic seizure before it begins.
The transmitter and its battery would be implanted below the scalp, while the electrodes that pick up the data would go right into the brain. The data is then sent to an external receiver.
When an epileptic seizure occurs, the brain fires abnormally. So, the transmitter would be able to pick up signals from different parts of the brain at the same time, indicating when it is about to start.
Researchers hope to test this on humans in two years.