Brain-Computer Interface Resesarch: A State-of-the-Art Summary 4 (C. Guger, B. Z. Allison, G. R. Müller-Putz) -- Airborne Ultrasonic Tactile Display BCI (K. Hamada) -- Semi-autonomous Hybrid Brain-Machine Interface (D. McMullen) -- Towards an Auditory Attention BCI (P. Brunner) -- Real-time Mapping of Natural Speech in Children with Drug-resistant Epilepsy (R. Arya) -- Heterogeneous BCI- Triggered Functional Electrical Stimulation Intervention for the Upper-Limb Rehabilitation of Stroke Patients (J. Ibáñez) -- Brain-Computer Interfaces for Communication and Rehabilitation Using Intracortical Neuronal Activity from the Prefrontal Cortex and Basal Ganglia in Humans (C. B. Boulay) -- Neurofeedback Training with a Motor Imagery-based BCI Improves Neurocognitive Functions in Elderly People (J. Gomez-Pilar) -- ALS Population Assessment of a Dynamic Stopping Algorithm Implementation for P300 Spellers (B. Mainsah) -- Near-Instantaneous Classification of Perceptual States from Cortical Surface Recordings ( K. J. Miller) -- The Changing Brain: Bidirectional Learning Between Algorithm and User (N. Mrachacz-Kersting -- Recent Advances in Brain-Computer Interface Research - A Summary of the BCI Award 2014 and BCI Research Trends (C. Guger, B. Z. Allison, G. R. Müller-Putz).