The Monash Vision Group is developing a bionic eye based on an implantable cortical visual prosthesis. The visual prosthesis aims to restore vision to blind people by electrical stimulation of the visual cortex of the brain. Due to the expected naivety of early prostheses, there is need for the development of innovative pre-processing of scene information in order to provide the most intuitive representation to user. However, in order to explore solutions to this need, prior to availability of functional implants, a simulator system is required. In this paper, we present a portable, real-time simulator and psychophysical evaluation platform that we have developed called the 'HatPack'. It makes use of current neurophysiological models of visuotopy and overcomes limitations of existing systems. Using the HatPack, which is compiled into a neat, wearable package, we have conducted preliminary psychophysics testing, which has shown the significance of available greyscale intensity levels and frame rates. A learning effect associated with repeated trials was also made evident. © Springer-Verlag Berlin Heidelberg 2013.
Josh, H., Yong, B., & Kleeman, L. (2013). A Real-Time and Portable Bionic Eye Simulator. In Communications in Computer and Information Science (Vol. 357 CCIS, pp. 51–67). Springer Verlag. https://doi.org/10.1007/978-3-642-38256-7_4