EEE SMC 2015's 5th Workshop on Brain-Machine Interfaces Systems will be held October 9-12, 2015 in Hong Kong. SMC2015 is the flagship conference of the IEEE Systems, Man, and Cybernetics Society. This workshop is co-organized by the IEEE SMC TC on Brain-Machine Interfaces systems and IEEE SMC TC on Shared Control and is free to all SMC2015 attendees. The main theme of this year's workshop is: The Human-in-the-Loop Workshop: BCI, Haptics, Big Data, and Shared Control Brain-Machine Interfaces (BMI) systems offer the possibility of a new generation of multidisciplinary technologies that allow users to directly control devices via the nervous system. Successful realization of such approaches requires seamless interaction of the human and the machine, involving not only the decoding of the (neural) control signals but also efficient means to provide information back to the user (e.g. haptics). Furthermore the use of shared control principles, allowing the cooperation between the adaptive intelligent systems and the user greatly improves the system performance. The goal of this workshop is to facilitate the interaction and intellectual exchange between all researchers, developers and consumers of this technology. This international forum is a unique opportunity for reporting the latest advances, innovations, and applications in these fields. Of particular interest will be the report and evaluation of complete systems considering aspects such as multidimensional performance metrics reflecting decoding accuracy, task performance, human factors, decoding algorithms, feedback, etc. Furthermore, along with SMC2015's main theme of Big Data Analytics for Human-Centric, a particular focus will be put on the use of big data approaches to advance the state-of-the-art of brain-machine interfacing systems. These topics represent both challenges to the field and a tremendous opportunity for collaborative and multidisciplinary research, involving not only peers with expertise in the field of BMI, but also expertise in systems engineering, human-machine systems, and/or other disciplines. Like previous workshops there is a focus on practical applications of BMI theory and methodologies leading to tangible systems, products, and service technologies. As such, all submitted papers should include a section on how their topic can translate into practical applications. At the core of Brain-Machine-Interface systems is the coordination of sensing, computation, communication, control, and actuation of dynamic systems. Experts from many research areas within SMC and from outside are needed if reliable real-world BMI systems are ever to have significant and lasting impact on people. Advances in IEEE SMC's fields of interest as they relate to BMI are expected to empower future systems to achieve this goal. This workshop will be of special interest to those experts in the topics listed below who are interested in learning how their research areas can be applied to solving of various research problems necessary for the development of real-world invasive and non-invasive BMI systems. Besides presentations of accepted papers, this 3 day workshop will feature panels, discussions with the audience, and a number of prominent invited speakers from industry and academia.