Editorial : Special issue on “ Geometrical Methods in Neural Networks and Learning ”

Simply stated, the brain is a remarkable information processor that operates with principles that are completely different from those informing modern computers. Information is represented in the brain by spatio-temporal patterns of excitation spread over a large number of neurons and the brain processes information in parallel through the dynamic interactions of neurons so that efficient and flexible information processing takes place. Also, one of the most interesting features of the brain is that it creates a model of the world by learning and self-organization.