Why epilepsy happens?
The brain consists of millions of nerve cells, or neurones, and their supporting structure. Each neurone maintains itself in an electrically charged state. It receives electrical signals from other neurones, and passes them on to others. What actually happens is that a tiny quantity of a special neurotransmitter substance is released from the terminals of one neurone. This chemical excites an electrical response in the neurone next in the chain, and so the signal moves onward. All the functions of the brain, including feeling, seeing, thinking and moving muscles depend on electrical signals being passed from one neurone to the next, the message being modified as required. The normal brain is constantly generating electrical rhythms in an orderly way. There is a cancellation of unwanted signals which does not allow the excitation to spread to unwanted parts of the brain for the activity under consideration. When this does not happen excitation of larger portion of neurones occur causing
