The new century has seen a significant upsurge in the study of the electrophysiological activity in the neurons and its excitatory behaviours. As a result, new approaches have been used, where the brain cells are seen as RC electrical circuits. Because of this characteristic, the brain has the capacity to handle the induction of small current impulses, in order to overcome disorders and improve the memory and learning activity. Other approaches have been developed simultaneously, and they have proven to be effective in the treatment of Parkinson disease and seizures disorders. However, there are some limitations within these procedures and the influence of external factors is still one of the main issues in the measurements and recording of the brain electrical activity.