This book constitutes the refereed proceedings of the 8th International Workshop on Artificial Neural Networks, IWANN 2005, held in Vilanova i la Geltr?, Barcelona, Spain in June 2005.

The 150 revised papers presented – including the contribution of three invited speakers – were carefully reviewed and selected from 240 submissions for inclusion in the book and address the following topics: mathematical and theoretical methods, evolutionary computation, neurocomputational inspired models, learning and adaptation, radial basic functions structures, self-organizing networks and methods, support vector machines, cellular neural networks, hybrid systems, neuroengineering and hardware implementations, pattern recognition, perception and robotics and applications in a broad variety of fields.