McCarthy, ID;
Yong, K;
Suzuki, T;
Yang, B;
Holloway, C;
Tyler, N;
Carton, A;
(2015)
Infrastructureless pedestrian navigation to assess the response of Alzheimer's patients to visual cues.
In:
Proceedings of IET International Conference on Technologies for Active and Assisted Living (TechAAL).
IEEE: London, United Kingdom.
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Abstract
The aim of the study was to understand how patients with dementia were able to navigate in a domestic environment, and whether the presence of visual cues could assist in route finding. A simulated domestic environment was created in the Pedestrian Accessibility and Movement Environment Laboratory (PAMELA) comprising three different types of corridors and an open room with three doors. Three groups of subjects were studied: i) posterior cortical atrophy; ii) typical Alzheimer’s disease; iii) age- and gender matched controls. Foot-mounted inertial measurement units (IMUs) were used to measure accelerations in 3D. Data from the sensors was transmitted wirelessly to a laptop computer. Local accelerations were converted to global accelerations, and double integration was performed to calculate displacement; corrections for sensor drift were performed during this process.
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