Introduction; Gerd Grübler and Elisabeth Hildt.- Part I: Applications.- Brain Computer Interfaces and Assistive Technology; Rüdiger Rupp , Sonja C. Kleih , Robert Leeb , José del R. Millan, Andrea Kübler and Gernot R. Müller-Putz.- Brain Computer Interfaces and Diagnosis; Camille Chatelle, Steven Laureys and Quentin Noirhomme.- Brain Computer Interfaces and Therapy; Donatella Mattia and Marco Molinari.- Part II: Stakeholders and Perspectives.- BCI as an Emerging Assistive Technology (AT): The AT Professionals' Perspective; Evert-Jan Hoogerwerf, Lorenzo Desideri, Massimiliano Malavasi, Matteo Rimondini and Mick Donegan.- Psychological Perspectives: Quality of Life and Motivation; Sonja C. Kleih and Andrea Kübler.- Emerging BCI Opportunities from a Market Perspective; Christoph Guger, Brendan Z. Allison and Günter Edlinger.- Between Neuro-potentials and Aesthetic Perception. Pingo Ergo Sum; Adi Hoesle.- My BCI Vision; Sonja Balmer.- The Users' Perspective; Various Authors.- Relatives' report.- Part III: Reflections.- A Tour of Some Brain/Neuronal-Computer Interfaces; Kevin Warwick.- Philosophical Reflections on Brain-Computer Interfaces; Guglielmo Tamburrini.- Brain-Computer Interfaces and User Responsibility; Fiachra O'Brolchain and Bert Gordijn.- On Human-Computer Interaction in Brain-Computer Interfaces; Gerd Grübler and Elisabeth Hildt.- BCI and a User's Judgment of Agency; Rutger Vlek, Jan-Philip van Acken, Evine Beursken, Linsey Roijendijk and Pim Haselager.