Alle Publikationen
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2017
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(2017): Toward an intelligent long-term assistance for people with dementia in the context of navigation in indoor environments : Intelligente Langzeit-Unterstützung für Menschen mit Demenz im Kontext der Navigation in Gebäuden. In: Universität Würzburg, Graduate School of Science and Technology
Abstract: Designed and examined a system for indoor environments for people with moderate to severe dementia, who are unable or reluctant to use smartphone technology. To this end, a series of 10 studies was conducted with total of 35 adults with dementia. In the first step, a user-centered design approach was adopted to gather context and requirements of people with dementia in order to understand needs and difficulties (especially in spatial disorientation and wayfinding problems) experienced in dementia care facilities. Then, an "Implicit Interactive Intelligent (III) Environment" for people with dementia was proposed emphasizing implicit interaction and natural interface. The backbone of this III Environment is based on supporting orientation and navigation tasks with three systems: a monitoring system, an intelligent system, and a guiding system. The monitoring system and intelligent system automatically detect and interpret the locations and activities performed by the users i.e. people with dementia. This approach (implicit input) reduces cognitive workload as well as physical workload on the user to provide input. The intelligent system is also aware of context, predicts next situations (location, activity), and decides when to provide an appropriate service to the users. The guiding system with intuitive and dynamic environmental cues (lighting with color) has the responsibility for guiding the users to the places they need to be. Overall, three types of a monitoring system with Ultra-Wideband and iBeacon technologies, different techniques and algorithms were implemented for different contexts of use. They showed a high user acceptance with a reasonable price as well as decent accuracy and precision. In the intelligent system, models were built to recognize the users' current activity, detect the erroneous activity, predict the next location and activity, and analyze the history data, detect issues, notify them and suggest solutions to caregivers via visualized web interfaces. Regarding the guiding systems, five studies were conducted to test and evaluate the effect of lighting with color on people with dementia. The results were promising. Although several components of III Environment in general and three systems, in particular, are in place (implemented and tested separately), integrating them all together and employing this as a fully properly evaluation with formal stakeholders (people with dementia and caregivers) need to be examined in future research.
2015
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(2015): Near or far? It depends on my impression. Moral information and spatial behavior in virtual interactions. In: Acta psychologica 161, S. 131-136. DOI: 10.1016/j.actpsy.2015.09.003
DOI: http://www.ncbi.nlm.nih.gov/pubmed/26386781 Abstract: Near body distance is a key component of action and social interaction. Recent research has shown that peripersonal space (reachability-distance for acting with objects) and interpersonal space (comfort-distance for interacting with people) share common mechanisms and reflect the social valence of stimuli. The social psychological literature has demonstrated that information about morality is crucial because it affects impression formation and the intention to approach-avoid others. Here we explore whether peripersonal/interpersonal spaces are modulated by moral information. Thirty-six participants interacted with male/female virtual confederates described by moral/immoral/neutral sentences. The modulation of body space was measured by reachability-distance and comfort-distance while participants stood still or walked toward virtual confederates. Results showed that distance expanded with immorally described confederates and contracted with morally described confederates. This pattern was present in both spaces, although it was stronger in comfort-distance. Consistent with an embodied cognition approach, the findings suggest that high-level socio-cognitive processes are linked to sensorimotor-spatial processes.
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