The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. Corresponding author: Sarah Sharples, tel: +44 (0)115 951 AbstractThe practice of evaluating interaction with devices is embedded in disciplines such as human-computer interaction and cognitive ergonomics, including concepts such as affordances, error analysis, skill, rule and knowledge based behaviour and decision making biases. This paper considers the way in which the approach that has been routinely applied to displays and control design within the control and transport domains can be transferred to the context of medical devices. The importance of considering the context in which medical Medical Device Design in Context: A model of user-device interaction and consequences 2 devices are used and implemented is presented, and the need for a systems approach to medical device design is emphasised. Five case studies from medical device control and display design are presented as an aide to developing an understanding of the relationship between device design and resultant behaviours. On the basis of these case studies, four types of mediating factors (catalysts, enablers, facilitators and enhancers) are proposed and a model to describe the link between device design, user, context and consequences is presented.
This research aims to evaluate a mobile phone-based video reminder system (MPVS) for people with dementia, with respect to its design and utility, in addition to its ability to satisfy user needs. Carers for those using the system use a bespoke desktop-based system to record and schedule reminders for delivery through the MPVS system. Nine participants were set eight activities of daily living (ADL) tasks and asked to repeat these tasks over a number of days within an ABAevaluation protocol. In the A phase, ADLs were undertaken using standard reminding techniques; in the B phase, the MPVS system was used; following this, a second A phase was evaluated. ADL completion / compliance was rated and recorded by the carer. Carers and participants were interviewed prior to and following the evaluation to gauge their perceived needs and how these are met, in addition to the potential utility of the technology. The generalizability of the outcome of this evaluation is limited due to the low number of participants; however, the participants reported that the MPVS system assisted them to organize their routine, and the phone used to deliver the video messages was of a good size with adequate screen and audio clarity. The carers saw the potential utility of the technology, and although some had to learn how to use the desktop recording system, the wizard-led interface made it much easier to use for people with minimal computer experience.
In the development of technology for people with mild dementia it is essential to achieve a combination of the features which provide both support and monitoring along with the ability to offer a level of personalization. Reminding support by means of personalized video reminders portraying a relative or friend combined with sensors to assess whether the requested task was performed lends itself as an ideal combination to achieve this aim. This study assesses the potential of using low cost, off the shelf sensors combined with a mobile phone-based video reminding system to assess compliance with task completion. A validation study has been conducted in a lab-based environment with 10 healthy young participants. The work presented discusses the implementation of the approach adopted, data analysis of the results attained along with outlining future developments of this approach.
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