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Your brain waves were measured over a long period of time. A video recording was made of you at the same time.

The brain is located inside the head. It receives, processes and stores sensory impressions. The brain controls movements and various physical functions.

Many of the brain’s processes involve mild electrical currents flowing to the nerve cells. Some of these currents can be measured in the scalp. To take the measurements, various metal plates are laid on the scalp. Sometimes a very thin metal wire is also introduced beneath the skin in the cheek area. The various sensors enable different areas of the brain to be examined.

The brain waves are represented as lines or waves on a screen or on paper. When seizures occur, the lines or waves change. The measurements enable the seizure triggers to be assigned to an area in the brain. A video recording was made of you while the measurements were being taken. In this way, when certain changes occur in the brain waves, for example, it can show whether you have just had a seizure.

Testing like this is carried out over a long period of time. This may take several days.