During the last few decades, substantial scientific and technological efforts have been focused on the development of neuroprostheses. The major emphasis has been on techniques for connecting the human nervous system with a robotic prosthesis via natural-feeling interfaces. The peripheral nerves provide access to highly processed and segregated neural command signals from the brain that can in principle be used to determine user intent and control muscles. If these signals could be used, they might allow near-natural and intuitive control of prosthetic limbs with multiple degrees of freedom. This review summarizes the history of neuroprosthetic interfaces and their ability to record from and stimulate peripheral nerves. We also discuss the types of interfaces available and their applications, the kinds of peripheral nerve signals that are used, and the algorithms used to decode them. Finally, we explore the prospects for future development in this area.

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While travelling to new places, maps are often used to determine the specifics of the route to follow. This helps prepare for the journey by forming a cognitive model of the route in our minds. However, the process is predominantly visual and thus inaccessible to people who are either blind or visually impaired (BVI) or doing an activity where their eyes are otherwise engaged. This work explores effective methods of generating route overviews, which can create a similar cognitive model as visual routes, using audio. The overviews thus generated can help users plan their journey according to their preferences and prepare for it in advance. This paper explores usefulness and usability of auditory routes overviews for the BVI and draws design implications for such a system following a 2-stage study with audio and sound designers and users. The findings underline that auditory route overviews are an important tool that can assist BVI users to make more informed travel choices. A properly designed auditory display might contain an integration of different sonification methods and interaction and customisation capabilities. Findings also show that such a system would benefit from the application of a participatory design approach.

Auditory overviews of routes can provide routing and map information to blind users enabling them to preview route maps before embarking on a journey. This article investigates the usefulness of a system designed to do this through a Preliminary Survey, followed by a Design Study to gather the design requirements, development of a prototype and evaluation through a Usability Study. The design is drawn in two stages with eight audio designers and eight potential blind users. The auditory route overview is sequential and automatically generated as integrated audio. It comprises auditory icons to represent points of interest, earcons for auditory brackets encapsulating repeating points of interest, and speech for directions. A prototype based on this design is developed and evaluated with 22 sighted and eight blind participants. The software architecture of the prototype including the route information retrieval and mapping onto audio has been included. The findings show that both groups perform well in route reconstruction and recognition tasks. Moreover, the functional route information and auditory icons are effectively designed and useful in forming a mental model of the route, which improves over time. However, the design of auditory brackets needs further improvement and testing. At all stages of the system development, input has been acquired from the end-user population and the design is adapted accordingly.

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