Improving pedestrian navigation for older adults with mild cognitive impairments through landmarks¶

Abstract¶

Nowadays, ageing is considered a global epidemic due to the rapid growth of the older population throughout the world. It is predicted that, in 2050, for the first time in recorded history, the
older population is set to surpass the young population.

Therefore, an increase of incidence of age-related physical and mental impairments can been noticed. Dementia, in particular, is a well known syndrome which older adults are prone to develop. This condition is connected to a progressive loss of cognitive ability, leading to many difficulties such as mobility issues and time and spatial disorientation. A wandering behaviour, consisting on an aimless and disoriented walk, may present itself as a most worrying symptom, sometimes leading to accidents, injuries or even death. Such issues lead to decreased navigation skills - the skills a person needs to find their way to a location - and increased dependency on the patient's caregiver.

This dissertation approaches these mobility problems and intends to investigate how two distinct navigation concepts (landmark-based and turn-by-turn) affect the mobility and sense of safety of older adults and persons with mild dementia. As such, the state of the art of navigation methods used to instruct or guide users throughout a route towards their destination was studied.

This goal was pursued by developing a prototype of a pedestrian-oriented navigation application, to be used in mobile devices by these users. This solution employs a landmark-based approach, introducing nearby landmarks in the generated instructions whenever deemed relevant. As an alternative, it offers the possibility of being guided through a turn-by-turn paradigm instead, currently the most common navigation method.

The prototype served as a tool to an empirical study. 12 participants of ages between 63 and 80 were selected and split into two groups to perform field experiments, where they were asked to use one of the two implemented navigation methods to reach an undisclosed destination. The collected data revealed that a landmark-based approach presents a significative increase in older adult's mobility, orientation and sense of security.

Participants¶

Student: Diogo Castro
Supervisor: Nuno Honório Rodrigues Flores (PhD)
Second Supervisor: Ricardo Jorge Azevedo Moutinho (Researcher at FhP)

Location¶

Fraunhofer Portugal

Dissertation Documents¶

Dissertation (provisional version): https://feupload.fe.up.pt/get/Q9WXvDa1aaquYsN

Dissertation Planning¶

First presentation: https://feupload.fe.up.pt/get/bedFM9YPgIep3W2
Final presentation: https://feupload.fe.up.pt/get/dx6ouK3HU05JHEe
Technical Report: https://feupload.fe.up.pt/get/OUgYKMdzB67LDLc

Contacts¶

E-mail: diogo.filipe.castro@gmail.com / diogo.castro@fraunhofer.pt