Micro-neurosurgery has been revolutionized by advances in the surgical microscope such as high magnification that have increased a surgeon's ability to have a clear view of the surgical field. High magnification necessitates frequent interaction with the microscope during an operation, and the current interaction technique for positioning and adjusting the microscope introduces risk factors that force a surgeon to remove hands from the operating field. The purpose of this study is to investigate the potential for hands-free interaction in microneurosurgery. We present findings from a contextual study of how neurosurgeons interact with the microscope and the surgical team, and discuss the implications of the findings for designing hands-free, especially gaze-based interaction techniques for micro-neurosurgery.
Most of the current methods for user experience evaluation require that users are able to reflect on and communicate their own experience. Such methods, however, are not suitable when users have limited communication skills. We conducted video observations to evaluate user experience of four low-functioning children with an autism spectrum disorder while they were playing a prototype of a game. Our preliminary results suggest that despite its limitations, video observation can be a useful technique for evaluating episodic user experience of children with special needs.
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